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<document id="F1F8B3B751B01819651BE82E13FD5C41" ID-DOI="10.11646/phytotaxa.298.3.6" ID-ISSN="1179-3163" ID-Zenodo-Dep="13694170" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725550545882" checkinUser="felipe" docAuthor="Fischer, Eberhard, Rahelivololona, Marie Elisette &amp; Abrahamczyk, Stefan" docDate="2017" docId="03F78797FF98FFFE28CAFF633326F7E9" docLanguage="en" docName="phytotaxa.298.3.6.pdf" docOrigin="Phytotaxa 298 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.298.3.6" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Impatiens galactica Eb. Fisch., Raheliv. &amp; Abrah. 2017, sp. nov." docType="treatment" docVersion="2" lastPageNumber="270" masterDocId="FFCEFFEFFF99FFFF2842FFFC326BFFC5" masterDocTitle="Impatiens galactica (Balsaminaceae), a new spurless species of section Trimorphopetalum from Madagascar" masterLastPageNumber="276" masterPageNumber="269" pageNumber="270" updateTime="1725550926404" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="14357FEA47E4F3185C2694AFD626546E">Impatiens galactica (Balsaminaceae), a new spurless species of section Trimorphopetalum from Madagascar</mods:title>
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<mods:namePart id="0024C421ED95A3C62229835D21CB2434">Fischer, Eberhard</mods:namePart>
<mods:affiliation id="E1E289F174747638B76761D3073AFC08">Institute for Integrated Natural Sciences - Biology, University of Koblenz-Landau, Universitätsstrasse 1, 56070 Koblenz, Germany.</mods:affiliation>
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<mods:namePart id="5DF65302B48FC6F4612437C93655F13C">Rahelivololona, Marie Elisette</mods:namePart>
<mods:affiliation id="00BCCF6D0210078D66D756D90700DBB8">Parc Botanique et Zoologique de Tsimbazaza, BP 4096 Antananarivo &amp; Université de Mahajanga, République de Madagascar.</mods:affiliation>
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<mods:namePart id="DFCA0E73A9BCE894AD8FA836FAFA86A3">Abrahamczyk, Stefan</mods:namePart>
<mods:affiliation id="75AE2FB80E1ED61715350F37A7392A62">Nees-Institute for Plant Biodiversity, University of Bonn, Meckenheimer Allee 170, 53115 Bonn, Germany.</mods:affiliation>
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<mods:title id="9310AF69A5F75FE96552BEE65A789640">Phytotaxa</mods:title>
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<treatment id="03F78797FF98FFFE28CAFF633326F7E9" ID-DOI="http://doi.org/10.5281/zenodo.13694186" ID-Zenodo-Dep="13694186" LSID="urn:lsid:plazi:treatment:03F78797FF98FFFE28CAFF633326F7E9" httpUri="http://treatment.plazi.org/id/03F78797FF98FFFE28CAFF633326F7E9" lastPageNumber="270" pageId="1" pageNumber="270">
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<paragraph id="8BE13681FF98FFFE28CAFF6331ECFF7D" blockId="1.[136,903,159,184]" box="[136,903,159,184]" pageId="1" pageNumber="270">
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<taxonomicName id="4C5E4D02FF98FFFE28CAFF6330DEFF7D" ID-CoL="6MTXY" authority="Eb.Fisch., Raheliv. &amp; Abrah." authorityName="Eb. Fisch., Raheliv. &amp; Abrah." authorityYear="2017" box="[136,693,159,184]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="galactica" status="sp. nov.">
<emphasis id="B92AEA93FF98FFFE28CAFF633301FF7D" bold="true" box="[136,362,159,184]" italics="true" pageId="1" pageNumber="270">Impatiens galactica</emphasis>
Eb.Fisch., Raheliv. &amp; Abrah.
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<emphasis id="B92AEA93FF98FFFE2AFEFF63317AFF7D" box="[700,785,159,184]" italics="true" pageId="1" pageNumber="270">
<taxonomicNameLabel id="A21957E8FF98FFFE2AFEFF63317AFF7D" box="[700,785,159,184]" pageId="1" pageNumber="270" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="13652A04FF98FFFE2B5DFF633109FF7D" box="[799,866,159,184]" captionStart="FIGURE 1" captionStartId="2.[136,229,1945,1966]" captionTargetBox="[151,1421,190,1899]" captionTargetId="figure-14@2.[151,1436,187,1918]" captionTargetPageId="2" captionText="FIGURE 1. Impatiens galactica.A, B, habit; C, flower in abaxial view; D, flower in adaxial view; E, lower sepal; F, lateral sepal; G, dorsal petal; H, lateral united petals.All drawn from the type by E. Fischer." figureDoi="http://doi.org/10.5281/zenodo.13694172" httpUri="https://zenodo.org/record/13694172/files/figure.png" pageId="1" pageNumber="270">Fig. 1</figureCitation>
,
<figureCitation id="13652A04FF98FFFE2B32FF633114FF7D" box="[880,895,159,184]" captionStart="FIGURE 2" captionStartId="3.[136,229,1953,1974]" captionTargetBox="[192,1395,190,1929]" captionTargetId="figure-14@3.[192,1396,190,1929]" captionTargetPageId="3" captionText="FIGURE 2. Impatiens galactica. A, habit; B, habit with inflorescence; C &amp; D, flower. Photographs: S. Abrahamczyk (A), cultivated in Botanical Gardens University of Bonn; E. Fischer (BD), Marojejy National Park, Madagascar. Scale bar = 2 cm (A &amp; B), 5 mm (C &amp; D)." figureDoi="http://doi.org/10.5281/zenodo.13694176" httpUri="https://zenodo.org/record/13694176/files/figure.png" pageId="1" pageNumber="270">2</figureCitation>
)
</heading>
</paragraph>
<paragraph id="8BE13681FF98FFFE28CAFF3A3351FE82" blockId="1.[136,1452,198,399]" pageId="1" pageNumber="270">
Impatienti messmerae
<emphasis id="B92AEA93FF98FFFE292BFF3A3351FE82" italics="true" pageId="1" pageNumber="270">affinis sed habitu minore glabro sine squamibus albis, sepalis lateralibus lanceolatis apice obtuse instructis, sepalo inferiore ovato apice abrupto et ornamentatione aurantiaco instructo, petalo dorsali triangulo dilatato submediano et petalis lateralibus sub formam litterae minore “d” cum parte superiore angusto et petalo superiore angusto apice brevissime instructo valde differt.</emphasis>
</paragraph>
</subSubSection>
<subSubSection id="C344650AFF98FFFE28CAFEAA360DFBDD" pageId="1" pageNumber="270" type="materials_examined">
<paragraph id="8BE13681FF98FFFE28CAFEAA31C6FE4A" blockId="1.[136,1452,198,399]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28CAFEAA32A9FEAE" bold="true" box="[136,194,342,363]" pageId="1" pageNumber="270">Type:</emphasis>
<materialsCitation id="3B363CDCFF98FFFE2899FEAA31C2FE4A" collectionCode="MO" collectorName="E. Fischer &amp; October" country="Madagascar" latitude="-14.432861" location="Cascade" longLatPrecision="1" longitude="49.772972" municipality="Parc National Marojejy" pageId="1" pageNumber="270" specimenCount="2" stateProvince="Antsiranana" typeStatus="holotype">
<collectingCountry id="F3497611FF98FFFE2899FEAA33E3FEAE" box="[219,392,342,363]" name="Madagascar" pageId="1" pageNumber="270">MADAGASCAR</collectingCountry>
.
<collectingRegion id="499AF863FF98FFFE29CDFEAA306DFEAE" box="[399,518,342,363]" country="Madagascar" name="Antsiranana" pageId="1" pageNumber="270">Antsiranana</collectingRegion>
,
<collectingMunicipality id="6B85ACFBFF98FFFE2A4CFEAA3084FEAE" box="[526,751,342,363]" pageId="1" pageNumber="270">Parc National Marojejy</collectingMunicipality>
, small stream near
<location id="8E81605AFF98FFFE2BE6FEAA319FFEAE" LSID="urn:lsid:plazi:treatment:03F78797FF98FFFE28CAFF633326F7E9:8E81605AFF98FFFE2BE6FEAA319FFEAE" box="[932,1012,342,363]" country="Madagascar" latitude="-14.432861" longLatPrecision="1" longitude="49.772972" municipality="Parc National Marojejy" name="Cascade" pageId="1" pageNumber="270" stateProvince="Antsiranana">Cascade</location>
d´Humbert,
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<geoCoordinate id="EE6A5046FF98FFFE2CBCFEAA37E5FEAE" box="[1278,1422,342,363]" degrees="49" direction="east" minutes="46" orientation="longitude" pageId="1" pageNumber="270" precision="1" seconds="22.7" value="49.772972">E 49°4622.7</geoCoordinate>
,
<emphasis id="B92AEA93FF98FFFE2DD5FEAA334EFE4A" italics="true" pageId="1" pageNumber="270">
<collectorName id="26AB5357FF98FFFE2DD5FEAA336DFE4A" pageId="1" pageNumber="270">E. Fischer</collectorName>
22
</emphasis>
, 18
<collectorName id="26AB5357FF98FFFE290DFE8633F7FE4A" box="[335,412,378,399]" pageId="1" pageNumber="270">October</collectorName>
2014 (
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TAN!;
<typeStatus id="54E58823FF98FFFE2A3CFE8630A6FE4A" box="[638,717,378,399]" pageId="1" pageNumber="270" type="isotype">isotypes</typeStatus>
P!, B!,
<collectionCode id="ED4FAE44FF98FFFE2B5AFE86312EFE4A" box="[792,837,378,399]" country="USA" lsid="urn:lsid:biocol.org:col:15859" name="Missouri Botanical Garden" pageId="1" pageNumber="270" type="Herbarium">MO</collectionCode>
!, BONN!)
</materialsCitation>
.
</paragraph>
<paragraph id="8BE13681FF98FFFE28CAFE43313FFC15" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28CAFE433363FE1D" box="[136,264,447,472]" italics="true" pageId="1" pageNumber="270">Decumbent</emphasis>
to slightly ascending, perennial herb, up to
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high.
<emphasis id="B92AEA93FF98FFFE2BD6FE4331BEFE1D" box="[916,981,447,472]" italics="true" pageId="1" pageNumber="270">Stems</emphasis>
reddish brown, succulent, branching and rooting at lower nodes. Plant entirely glabrous.
<emphasis id="B92AEA93FF98FFFE2AFAFE1F316DFE39" box="[696,774,483,508]" italics="true" pageId="1" pageNumber="270">Leaves</emphasis>
alternate, spirally arranged, deep green above, pale green below; petioles reddish brown,
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and continuously growing. Lamina
<quantity id="4CA69B64FF98FFFE2BA2FDFB3633FDE5" box="[992,1112,519,544]" metricMagnitude="-2" metricUnit="m" metricValue="5.8" metricValueMax="8.1" metricValueMin="3.5" pageId="1" pageNumber="270" unit="mm" value="58.0" valueMax="81.0" valueMin="35.0">3581 mm</quantity>
×
<quantity id="4CA69B64FF98FFFE2C36FDFB3685FDE5" box="[1140,1262,519,544]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" metricValueMax="4.0" metricValueMin="2.0" pageId="1" pageNumber="270" unit="mm" value="30.0" valueMax="40.0" valueMin="20.0">2040 mm</quantity>
, leathery, elliptic to lanceolate, apex acute, base shortly attenuate; lateral veins (3)4 or 5 pairs; margin crenate; extrafloral nectaries
<quantity id="4CA69B64FF98FFFE28CAFDB33291FDAD" box="[136,250,591,616]" metricMagnitude="-3" metricUnit="m" metricValue="1.25" metricValueMax="1.5" metricValueMin="1.0" pageId="1" pageNumber="270" unit="mm" value="1.25" valueMax="1.5" valueMin="1.0">11.5 mm</quantity>
long, linear, 9 or 10 pairs, at the lamina margin between each pair of teeth, half erect, prominent especially at young leaves.
<emphasis id="B92AEA93FF98FFFE2908FD8F338BFD49" box="[330,480,627,652]" italics="true" pageId="1" pageNumber="270">Inflorescence</emphasis>
1- or 2-flowered. Flowers yellowish white, semi-transparent, with an orange-yellow, shiny,
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wide line along the midrib of the lower sepal and a greenish crest on the dorsal petal.
<emphasis id="B92AEA93FF98FFFE2C8CFD6B3746FD75" box="[1230,1325,663,688]" italics="true" pageId="1" pageNumber="270">Pedicels</emphasis>
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long, slender.
<emphasis id="B92AEA93FF98FFFE296AFD4733A2FD11" box="[296,457,699,724]" italics="true" pageId="1" pageNumber="270">Lateral sepals</emphasis>
2, 45(6) mm ×
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, lanceolate, acute.
<emphasis id="B92AEA93FF98FFFE2BAAFD473618FD11" box="[1000,1139,699,724]" italics="true" pageId="1" pageNumber="270">Lower sepal</emphasis>
(12)
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× (6)
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ovate-lanceolate, shallow naviculate, spurless, tapering to a
<quantity id="4CA69B64FF98FFFE2B18FD2331DCFD3D" box="[858,951,735,760]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="1" pageNumber="270" unit="mm" value="1.5" valueMax="2.0" valueMin="1.0">12 mm</quantity>
long tip.
<emphasis id="B92AEA93FF98FFFE2C60FD2336C4FD3D" box="[1058,1199,735,760]" italics="true" pageId="1" pageNumber="270">Dorsal petal</emphasis>
1416 × (6)
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, helmet-like, dorsally conspicuously crested, dilated to a triangle below the middle of the crest, tapering to a 1 long mm tip.
<emphasis id="B92AEA93FF98FFFE28F1FCDB33F7FC85" box="[179,412,807,832]" italics="true" pageId="1" pageNumber="270">Lateral united petals</emphasis>
(18)2021(23) mm long, with petals different in size and shape, connivent at the outer tip; upper petal (6)
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× 2(2.5) mm, rectangular; lower petal (18)2021(23) mm × (8)
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, shaped as the lower case letters “b” and “d”. Anthers
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long.
<emphasis id="B92AEA93FF98FFFE2B40FC933123FC4D" box="[770,840,879,904]" italics="true" pageId="1" pageNumber="270">Ovary</emphasis>
<quantity id="4CA69B64FF98FFFE2B12FC9331C5FC4D" box="[848,942,879,904]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" metricValueMax="6.0" metricValueMin="5.0" pageId="1" pageNumber="270" unit="mm" value="5.5" valueMax="6.0" valueMin="5.0">56 mm</quantity>
long, curved downwards, grooved, glabrous.
<emphasis id="B92AEA93FF98FFFE28CAFC6F32A9FC69" box="[136,194,915,940]" italics="true" pageId="1" pageNumber="270">Fruit</emphasis>
<quantity id="4CA69B64FF98FFFE2888FC6F3328FC69" box="[202,323,915,940]" metricMagnitude="-2" metricUnit="m" metricValue="2.1" metricValueMax="2.4" metricValueMin="1.8" pageId="1" pageNumber="270" unit="mm" value="21.0" valueMax="24.0" valueMin="18.0">1824 mm</quantity>
×
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, irregularly fusiform, grooved, glabrous, with 310 seeds.
<emphasis id="B92AEA93FF98FFFE2C1EFC6F36F7FC69" box="[1116,1180,915,940]" italics="true" pageId="1" pageNumber="270">Seeds</emphasis>
<quantity id="4CA69B64FF98FFFE2CE6FC6F3769FC69" box="[1188,1282,915,940]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" pageId="1" pageNumber="270" unit="mm" value="2.5" valueMax="3.0" valueMin="2.0">23 mm</quantity>
× (1.0)
<quantity id="4CA69B64FF98FFFE2D2EFC6F32DDFC15" metricMagnitude="-3" metricUnit="m" metricValue="1.75" metricValueMax="2.0" metricValueMin="1.5" pageId="1" pageNumber="270" unit="mm" value="1.75" valueMax="2.0" valueMin="1.5">1.52 mm</quantity>
, roundish-ovate, with trichomes, sticky when fresh (
<figureCitation id="13652A04FF98FFFE2B40FC4B312DFC15" box="[770,838,951,976]" captionStart="FIGURE 3" captionStartId="4.[136,229,1953,1974]" captionTargetBox="[192,1396,190,1929]" captionTargetId="figure-14@4.[192,1396,190,1929]" captionTargetPageId="4" captionText="FIGURE 3. SEM micrograph of a seed of Impatiens galactica (A); note the flattened trichomes under a film of mucilage (B). Micrograph: H.-J. Ensikat." figureDoi="http://doi.org/10.5281/zenodo.13694178" httpUri="https://zenodo.org/record/13694178/files/figure.png" pageId="1" pageNumber="270">Fig. 3</figureCitation>
).
</paragraph>
<paragraph id="8BE13681FF98FFFE28FFFC27360DFBDD" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFC273348FC31" bold="true" box="[189,291,987,1012]" pageId="1" pageNumber="270">Habitat:</emphasis>
—Lower rainforest belt, growing on granitic rocks along a small stream in dense lowland rainforest,
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(
<figureCitation id="13652A04FF98FFFE28EFFC033298FBDD" box="[173,243,1023,1048]" captionStart="FIGURE 4" captionStartId="5.[136,229,1927,1948]" captionTargetBox="[151,1436,190,1902]" captionTargetId="figure-14@5.[151,1436,190,1903]" captionTargetPageId="5" captionText="FIGURE 4. Habitat of Impatiens galactica, Marojejy National Park, Madagascar, Cascade Humbert. Photograph: E. Fischer." figureDoi="http://doi.org/10.5281/zenodo.13694184" httpUri="https://zenodo.org/record/13694184/files/figure.png" pageId="1" pageNumber="270">Fig. 4</figureCitation>
). On Mt. Marojejy this vegetation
<typeStatus id="54E58823FF98FFFE2A35FC0330CCFBDD" box="[631,679,1023,1048]" pageId="1" pageNumber="270">type</typeStatus>
is found below
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(
<bibRefCitation id="EFCF4B70FF98FFFE2BF3FC033631FBDD" author="Humbert, H. J." box="[945,1114,1023,1048]" pageId="1" pageNumber="270" pagination="1 - 210" refId="ref2991" refString="Humbert, H. J. (1955) Une merveille de la nature a Madagascar. Premiere exploration botanique du massif de Marojejy et de ses satelittes. Memoires de l'Institut Scientifique de Madagascar Serie B 6: 1 - 210." type="journal article" year="1955">Humbert 1955</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C344650AFF98FFFE28FFFBDF3107FB6D" pageId="1" pageNumber="270" type="distribution">
<paragraph id="8BE13681FF98FFFE28FFFBDF33F7FBA5" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFBDF3332FBF9" bold="true" box="[189,345,1059,1084]" pageId="1" pageNumber="270">Distribution:</emphasis>
<collectingCountry id="F3497611FF98FFFE2934FBDF3395FBF9" box="[374,510,1059,1084]" name="Madagascar" pageId="1" pageNumber="270">Madagascar</collectingCountry>
, Marojejy National Park, small stream near Cascade d´Humbert (
<figureCitation id="13652A04FF98FFFE2C92FBDF3778FBF9" box="[1232,1299,1059,1084]" captionStart="FIGURE 5" captionStartId="6.[136,229,1953,1974]" captionText="FIGURE 5. Known distribution of Impatiens galactica (black dot with white margin)." pageId="1" pageNumber="270">Fig. 5</figureCitation>
), only known from the
<typeStatus id="54E58823FF98FFFE28ADFBBB3374FBA5" box="[239,287,1095,1120]" pageId="1" pageNumber="270">type</typeStatus>
collection.
</paragraph>
<paragraph id="8BE13681FF98FFFE28FFFB973107FB6D" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFB973328FB41" bold="true" box="[189,323,1131,1156]" pageId="1" pageNumber="270">Phenology:</emphasis>
—Collected in flower at the
<typeStatus id="54E58823FF98FFFE2AC9FB9730D0FB41" box="[651,699,1131,1156]" pageId="1" pageNumber="270">type</typeStatus>
locality in October. In cultivation at the Botanical Gardens of the University of Bonn, flowers have been noted almost every month.
</paragraph>
</subSubSection>
<subSubSection id="C344650AFF98FFFE28FFFB4F3326F7E9" pageId="1" pageNumber="270" type="etymology">
<paragraph id="8BE13681FF98FFFE28FFFB4F3399FB35" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFB4F3323FB09" bold="true" box="[189,328,1203,1228]" pageId="1" pageNumber="270">Etymology:</emphasis>
—From the Greek γαλαξίας (galaxias = the milky one), referring to the “milky look” of the yellowish white, semi-transparent flowers.
</paragraph>
<paragraph id="8BE13681FF98FFFE28FFFB0736CDFA0D" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFB0733DFFAD1" bold="true" box="[189,436,1275,1300]" pageId="1" pageNumber="270">Conservation status:</emphasis>
—With only a single collecting site, it is not possible to calculate an Extent of Occurrence (EOO). The area of occupancy (AOO) covers
<quantity id="4CA69B64FF98FFFE2ADEFAE330BCFAFD" box="[668,727,1311,1336]" metricMagnitude="3" metricUnit="m" metricValue="9.0" pageId="1" pageNumber="270" unit="km" value="9.0">9 km</quantity>
<superScript id="7C2B9BC9FF98FFFE2A95FAE230B4FAE9" attach="left" box="[727,735,1310,1324]" fontSize="6" pageId="1" pageNumber="270">2</superScript>
and falls within the limits for the Critically Endangered status under sub-criterion B2 of the
<bibRefCitation id="EFCF4B70FF98FFFE2992FABF3002FA99" author="IUCN &amp; Cambridge UK" box="[464,617,1347,1372]" pageId="1" pageNumber="270" refId="ref2845" refString="IUCN (2001) IUCN red list categories and criteria: Version 3.1. IUCN Species Survival Commission, Gland, Switzerland and Cambridge UK, iv + 32 pp." type="book" year="2001">IUCN (2001)</bibRefCitation>
. The species is currently only known from the
<typeStatus id="54E58823FF98FFFE2C32FABF36CBFA99" box="[1136,1184,1347,1372]" pageId="1" pageNumber="270">type</typeStatus>
locality which is within a well-managed protected area (Marojejy National Park) and is considered as safe. However, despite its restricted range, no immediate threats to the species are expected and there is no evidence for a continuing decline. Hence,
<taxonomicName id="4C5E4D02FF98FFFE2DD9FA77329BFA0D" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="galactica">
<emphasis id="B92AEA93FF98FFFE2DD9FA77329BFA0D" italics="true" pageId="1" pageNumber="270">I. galactica</emphasis>
</taxonomicName>
does not qualify for any threatened category, and is assessed as Least Concern (LC).
</paragraph>
<paragraph id="8BE13681FF98FFFE28FFFA2F3142F859" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
<emphasis id="B92AEA93FF98FFFE28FFFA2F3362FA29" bold="true" box="[189,265,1491,1516]" pageId="1" pageNumber="270">Notes:</emphasis>
—This new species of
<taxonomicName id="4C5E4D02FF98FFFE2A48FA2F3013FA29" box="[522,632,1491,1516]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="genus">
<emphasis id="B92AEA93FF98FFFE2A48FA2F3013FA29" box="[522,632,1491,1516]" italics="true" pageId="1" pageNumber="270">Impatiens</emphasis>
</taxonomicName>
is a member of section
<taxonomicName id="4C5E4D02FF98FFFE2BC7FA2F363CFA29" box="[901,1111,1491,1516]" pageId="1" pageNumber="270" rank="section" section="Trimorphopetulum">
<emphasis id="B92AEA93FF98FFFE2BC7FA2F363CFA29" box="[901,1111,1491,1516]" italics="true" pageId="1" pageNumber="270">Trimorphopetulum</emphasis>
</taxonomicName>
, which is characterized by the lack of spurs in the flowers and extrafloral nectaries on the petioles (
<bibRefCitation id="EFCF4B70FF98FFFE2BCFFA0B3769F9D5" author="Fischer, E. &amp; Rahelivololona, M. E." box="[909,1282,1527,1552]" pageId="1" pageNumber="270" pagination="269 - 315" refId="ref2424" refString="Fischer, E. &amp; Rahelivololona, M. E. (2007 a) New taxa of Impatiens (Balsaminaceae) from Madagascar IV. Adansonia 29: 269 - 315." type="journal article" year="2007">Fischer &amp; Rahelivololona 2007a</bibRefCitation>
). It is probably closely related to the morphologically similar, but larger species,
<taxonomicName id="4C5E4D02FF98FFFE2BC0F9E732D4F99D" authority="(Fischer &amp; Rahelivololona 2007 a: 296)" baseAuthorityName="Fischer &amp; Rahelivololona" baseAuthorityPageNumber="296" baseAuthorityYear="2007" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="messmerae">
<emphasis id="B92AEA93FF98FFFE2BC0F9E73672F9F1" box="[898,1049,1563,1588]" italics="true" pageId="1" pageNumber="270">I. messmerae</emphasis>
(
<bibRefCitation id="EFCF4B70FF98FFFE2C69F9E732DDF99D" author="Fischer, E. &amp; Rahelivololona, M. E." pageId="1" pageNumber="270" pagination="269 - 315" refId="ref2424" refString="Fischer, E. &amp; Rahelivololona, M. E. (2007 a) New taxa of Impatiens (Balsaminaceae) from Madagascar IV. Adansonia 29: 269 - 315." type="journal article" year="2007">Fischer &amp; Rahelivololona 2007a: 296</bibRefCitation>
)
</taxonomicName>
. The latter is also known from a similar habitat, a small stream on Mt. Marojejy but at higher elevation (
<quantity id="4CA69B64FF98FFFE2D11F9C337F6F99D" box="[1363,1437,1599,1624]" metricMagnitude="2" metricUnit="m" metricValue="7.5" pageId="1" pageNumber="270" unit="m" value="750.0">750 m</quantity>
). However,
<taxonomicName id="4C5E4D02FF98FFFE28BFF99F3315F9B9" box="[253,382,1635,1660]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="galactica">
<emphasis id="B92AEA93FF98FFFE28BFF99F3315F9B9" box="[253,382,1635,1660]" italics="true" pageId="1" pageNumber="270">I. galactica</emphasis>
</taxonomicName>
differs from
<taxonomicName id="4C5E4D02FF98FFFE2A55F99F30C7F9B9" baseAuthorityName="Fischer &amp; Rahelivololona" baseAuthorityYear="2007" box="[535,684,1635,1660]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="messmerae">
<emphasis id="B92AEA93FF98FFFE2A55F99F30C7F9B9" box="[535,684,1635,1660]" italics="true" pageId="1" pageNumber="270">I. messmerae</emphasis>
</taxonomicName>
in being a smaller plant (up to
<quantity id="4CA69B64FF98FFFE2C5AF99F3634F9B9" box="[1048,1119,1635,1660]" metricMagnitude="-1" metricUnit="m" metricValue="3.5" pageId="1" pageNumber="270" unit="cm" value="35.0">35 cm</quantity>
vs. up to
<quantity id="4CA69B64FF98FFFE2C91F99F3771F9B9" box="[1235,1306,1635,1660]" metricMagnitude="-1" metricUnit="m" metricValue="6.0" pageId="1" pageNumber="270" unit="cm" value="60.0">60 cm</quantity>
high), being entirely glabrous and lacking small white scales (vs. whitish scales present on stems and leaves). The lateral sepals in the new species are lanceolate with obtuse apex (vs. linear-filiform with acuminate apex), the lower sepal is ovate with a pronounced abruptly tapering short apex and a
<quantity id="4CA69B64FF98FFFE2AA3F9333149F92D" box="[737,802,1743,1768]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="1" pageNumber="270" unit="mm" value="2.0">2 mm</quantity>
wide orange line with slight ornamentation on midrib (vs. lanceolate and gradually tapering into an acuminate apex and completely lacking any colour and ornamentation), the dorsal petal with dilated triangle placed slightly below middle towards base (vs. placed above middle towards apex in
<taxonomicName id="4C5E4D02FF98FFFE28CAF8C73377F891" baseAuthorityName="Fischer &amp; Rahelivololona" baseAuthorityYear="2007" box="[136,284,1851,1876]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="messmerae">
<emphasis id="B92AEA93FF98FFFE28CAF8C73377F891" box="[136,284,1851,1876]" italics="true" pageId="1" pageNumber="270">I. messmerae</emphasis>
</taxonomicName>
), and the lateral united petals shaped as the lower case letters “b” or “d”, which are very narrow in the upper part with upper petal narrow and bearing a very short tip (vs. upper petal much larger in comparison to lower petal, rectangular, obtuse, up to half the size of lower petal).
</paragraph>
<paragraph id="8BE13681FF98FFFE28FFF85B3326F7E9" blockId="1.[136,1452,447,2092]" pageId="1" pageNumber="270">
In cultivation we noted that
<taxonomicName id="4C5E4D02FF98FFFE2A4EF85B30E4F805" box="[524,655,1959,1984]" class="Magnoliopsida" family="Balsaminaceae" genus="Impatiens" kingdom="Plantae" order="Ericales" pageId="1" pageNumber="270" phylum="Tracheophyta" rank="species" species="galactica">
<emphasis id="B92AEA93FF98FFFE2A4EF85B30E4F805" box="[524,655,1959,1984]" italics="true" pageId="1" pageNumber="270">I. galactica</emphasis>
</taxonomicName>
produces nectar mainly in the late afternoon and evening along the orange-yellow, shiny line on the lower sepal. Furthermore, the flowers exude a pleasant, fruity-sour scent that gets stronger during the late afternoon and evening. This, in combination with the flower colour, suggests pollination by nocturnal insects.
</paragraph>
</subSubSection>
</treatment>
</document>