Taxonomic study of Myrtaceae in forest fragments in Amazonian Maranhão, Brazil
Author
Amorim, Gabriela Dos Santos
Programa de Pós-graduação em Biologia Vegetal, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, 50670 - 901, Recife - PE, Brazil.
Author
Barbosa, Maria Regina De Vasconcellos
Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, Caixa Postal 5065, 58051 - 970, João Pessoa- PB, Brazil.
Author
Jr, Eduardo Bezerra De Almeida
Departamento de Biologia, Universidade Federal do Maranhão, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966 - Vila Bacanga, 65080 - 805, São Luís - MA.
Author
Thomas, William Wayt
0000-0002-4996-536X
Institute of Systematic Botany, New York Botanical Garden, 2900 Southern Boulevard, Bronx, 10458 - 5126, NY, United States. wthomas @ nybg. org; https: // orcid. org / 0000 - 0002 - 4996 - 536 X
wthomas@nybg.org
text
Phytotaxa
2022
2022-10-11
568
1
27
60
http://dx.doi.org/10.11646/phytotaxa.568.1.3
journal article
163382
10.11646/phytotaxa.568.1.3
87ddb879-1616-4e3b-8817-434b61fb0c60
1179-3163
7184245
28.
Myrcia neospeciosa
A.R. Lourenço & E. Lucas
(in
Lourenço
et al.
2018: 79
).
Replacing name for
Calyptranthes speciosa
Sagot (1885: 187)
.
Type:—
FRENCH GUIANA
.
M. Mélinon
488
(
type
:
P
[00723171], image)
. (
Fig. 6
F-G.)
Trees
6–
8 m
. Twigs glabrous. Leaves with petioles
13–25 mm
long, pubescent, unchanneled; blades ovate-lanceolate, oblong, rarely elliptic, 14.5–31.4 ×
6–10 cm
, glabrous adaxially and pubescent abaxially, the indumentum brownishred, chartaceous, discolorous, more lustrous adaxially; glands not seen; base rounded; apex acute or long acuminate; midvein adaxially impressed or sulcate; lateral veins slightly visible, not arched, 30 to 38 pairs; intra-marginal vein
1 mm
or less from the margin, nearly straight, very close the margin, margin revolute. Inflorescence axillary, pyramidal panicle, flowers lax, the axis
2.3–3 cm
long, pubescent, the indumentum brownish-red, with two lateral branches, opposite,
3.7–6.6 cm
long; bracts not seen, caducous before anthesis; pedicels
3 mm
long or sessile, pubescent; bracteoles not seen, caducous before anthesis; flower buds not seen; calyx-lobes completely fused, opening by calyptra, not reflexed, caducous in fruit; ovary not seen. Immature fruit subglobose to globose, 0.6–0.8 ×
0.7–0.9 cm
, pubescent, surface smooth.
Note:—
Myrcia neospeciosa
may be recognized by its ovate-lanceolate or oblong, rarely elliptic leaves, which are more lustrous adaxially; the nearly straight intra-marginal vein, which is
1 mm
or less from the margin; the calyxlobes, which are completely fused and opening by calyptra; and the subglobose or globose fruits, which are pubescent and have a smooth surface.
Distribution and habitat:—
Known from
Bolivia
,
Colombia
,
Ecuador
,
French Guiana
,
Peru
,
Suriname
,
Venezuela
and northeastern and northwestern
Brazil
(
Acre
,
Amapá
,
Maranhão
, Pará and
Rondônia
states) (POWO 2020,
Flora do
Brasil
2020
). In Amazonian
Maranhão
,
M
.
neospeciosa
was found growing in “terra firme” forest.
Phenology:—
Fruiting in December.
Specimens examined:—
BRAZIL
.
Maranhão
:
Rio Maracassumé
,
03 July 1958
(st.),
R.L. Fróes
34439
(
IAN
!)
.
Additional specimens examined:—
BRAZIL
.
Pará
:
Ilha de Marajó. Rio Anajas
,
1°00’00” S
,
50°10’00” W
,
28 October 1987
(fr.),
H.T. Beck
209
(INPA, image).
Amazonas: Manaus, Reserva Florestal Adolfo Ducke, Próx. picada
da Petrobrás
,
2°52’59” S
,
59°58’00” W
,
06 August 1997
(fr.),
M.A.D. Souza
395
(INPA, image)
.