A revision of Jasminanthes (Apocynaceae) with four new species from Borneo
Author
Rodda, Michele
text
Phytotaxa
2019
2019-06-04
405
3
127
146
http://dx.doi.org/10.11646/phytotaxa.405.3.4
journal article
10.11646/phytotaxa.405.3.4
1179-3163
Jasminanthes
Blume (1850: 148
, t. 28) [
Oct 1850
].
Li
et al.
(1995: 242)
Type
:—
Jasminanthes suaveolens
Blume (1850: 148
, t. 28) [
Oct 1850
].
Huthamnus
Tsiang (1939: 10)
.
Type
:—
Huthamnus sinicus
Tsiang (1939: 10)
=
Jasminanthes pilosa
(Kerr) W.D.Stevens & P.T.Li
Terrestrial climber, with clear latex.
Stems
twining,
2–5 mm
in diameter, pubescent or more rarely glabrescent;
Leaves
opposite, petiolate; petiole
0.1–4.5 cm
long, pubescent or glabrescent,
lamina
elliptic, ovate, oblong or lanceolate, pubescent or glabrescent, basal colleters present;
base
cordate to acute;
apex
acuminate, acute, cuspidate or caudate; venation pinnate.
Inflorescences
extra-axillary, racemiform, simple or branched 2–4 times;
peduncle
(0–)
1–18 cm
long, pubescent or glabrescent.
Pedicel
0.3–4 cm
long, pubescent or glabrescent.
Calyx
lobes triangular, oblong, ovate or lanceolate, 2.5–30 ×
1–8 mm
, pubescent or glabrescent; calycine colleters present or absent.
Corolla lobes
contorted in bud.
Corolla
salverform, tube
0.5–5 cm
long, inside at the base with 5 patches of dense brown trichomes, the upper part of the tube sparsely pubescent or glabrescent, outside glabrescent or pubescent; lobes linear, lanceolate, elliptic or ovate, 6–30 ×
1–11 mm
, base symmetrical or asymmetrical.
Corona
staminal absent or much reduced, if present lobes ovate, adnate to the back of the anthers.
Gynostegium
conical.
Pollinia
erect, oblong or clavate; caudicle filiform, hyaline; corpusculum oblong or ovate.
Anther appendages
erect, hyaline, covering the style head.
Style head
conical or umbonate.
Ovary
bicarpellate, carpels ovate, conical or oblong, glabrous or pubescent.
Fruit
a single or paired follicle, 10–25 ×
2.5–4 cm
, glabrous,
seed
ovate, 13–26 ×
4–9 mm
, comose at germinating end or not comose.