Parsonsia alboflavescens (Dennst.) Mabb.

Species

Angiosperms > Gentianales > Apocynaceae > Parsonsia

Characteristics

Branches lenticellate or not; branchlets glabrous or sparsely to densely minutely puberulent. Leaves opposite; petiole 0.7-4.7 cm long, glabrous or sparsely puberulent; blade papery to thickly coriaceous when dried, elliptic, ovate or, rarely, obovate or oblong, 3.5-23 by 0.8-21 cm, 1.2-4.4 times as long as wide, apex acuminate, rarely to obtuse, base cuneate to cordate, glabrous or sparsely to extensively puberulent beneath, 5-10 pairs of secondary veins, ascending, tertiary venation laxly reticulate to scalariform, rarely obscure. Inflorescence of axillary and, more rarely, terminal cymes, 3-21 cm long; sparsely to densely shortly pale puberulent; peduncles 1.2-13.5 cm long; pedicels 2.2-8.5 mm long. Sepals ovate, sometimes somewhat saccate at base of each lobe, 1.2-2.8 by 0.9-2.1 mm, 1-2.2 times as long as wide, apex acute to obtuse, glabrous to puberulent outside. Corolla yellowish to greenish, occasionally with some red inside; bud cylindrical or wider around the middle with a rounded to acute head, lobes slightly overlapping, open corolla with erect to only slightly spreading lobes; tube 1.6-4.5 mm long, 1.1-2.7 times as long as sepals, 0.5-1.4 times as long as lobes; lobes oblong to narrowly triangular, 2.1-5.8 by 0.7-1.5 mm, apex rounded to acute; glabrous to shortly puberulent outside and glabrous, puberulent in throat or sparsely puberulent down tube inside. Stamens inserted at 0.9-2.5 mm from corolla base which is 0.2-0.7 of tube length; filaments most commonly strongly twisted around the style, more rarely less strongly twisted to straight, 1.1-4.3 mm long; anthers 2.6-4.2 by 0.5-0.8 mm, 4.3-8 times as long as wide. Disk of 5 separate lobes, ovate to triangular, apex rounded to acute or irregularly toothed, 0.5-1.2 mm long. Ovary 0.7-1.5 mm long; style 1.5-4.6 mm long; style head 0.7-1.3 mm long. Fruit linear to fusiform, apex tapered, thin walled, smooth, glabrous to sparsely puberulent; 5.2-21 by 0.7-1.4 cm. Seeds: grain 9.5-24 by 1.2-3 mm; coma 1.8-4.6 cm long.
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Climber with twining stems, glabrous except for inflorescence; latex clear. Leaves thin, soft, pale green; petiole slender, 12–30 mm long; lamina elliptic, 8–15 cm long, 3.4–8.2 cm wide, cuneate, attenuate or occasionally rounded at base, shortly acuminate or mucronate; secondary veins 6 or 7 pairs, curving, slightly raised below, with some fine tertiary veins visible. Inflorescence of axillary, open panicles, with 13–30 flowers, usually longer than leaves; axes finely hairy; pedicels 4–9 mm long. Calyx lobes 2 mm long, finely hairy. Corolla yellowish or green, abruptly expanded above apex of tube, glabrous externally or very minutely puberulous; tube 2.5–4 mm long, with a ring of very short, flattened hairs in throat; lobes widely spreading, narrowly oblong-lanceolate, 5–6.3 mm long, 1.5–1.8 mm wide, obtuse, glabrous internally. Anther cone 3.3–4 mm long, ± fully exserted; filaments spirally twisted; anther tails convergent. Nectary scales free, ovate-deltoid, c. 1.2 mm long. Capsules slender, narrowly fusiform, 10–18 cm long, 0.5–0.9 cm diam.
Lianas woody, to 10 m, glabrous except for inflorescences. Branches pale gray. Petiole 2-4 cm; leaf blade ovate or subelliptic, 4-12 X 3-7.5 cm, base cuneate to shallowly cordate; lateral veins 5-7 pairs. Cymes 8-15 X 8-11 cm; peduncle 3-9 cm. Sepals ca. 2 mm, glands broadly triangular, membranous. Corolla white or greenish, tube ca. 5 mm, limb 1-2 cm wide, lobes ca. 6 mm. Anthers ca. 3.5 0.6 mm, inserted at middle of corolla tube. Ovary as long as or slightly shorter than disc, glabrous. Follicles 2, linear-cylindric, parallel, 7-16 X 1-2 cm. Seeds oblong 1.5-1.8 cm X ca. 2 mm, coma 2-4.5 cm. Fl. Apr-Oct, fr. Sep-Dec.
A woody vine. It can be 10 m long. The branches are pale grey. The leaves are 9-15 cm long by 5-9 cm wide. The flowers are 10-13 mm across. The fruiting carpels are 10-18 cm long by 0.5-0.9 cm wide.
Life form perennial
Growth form
Growth support climber
Foliage retention evergreen
Sexuality hermaphrodite
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Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
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Environment

A tropical plant. It China it grows in mixed woodlands between 200-500 m above sea level. It occurs in the Western Ghats in India.
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Hardiness (USDA) 8-12

Usage

Probably not edible.
Uses medicinal
Edible -
Therapeutic use Insanity (unspecified), Leg (unspecified), Swelling (unspecified), Mental disorders (whole plant)
Human toxicity -
Animal toxicity -

Cultivation

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Images

Parsonsia alboflavescens unspecified picture

Distribution

Parsonsia alboflavescens world distribution map, present in Australia, Bangladesh, China, Indonesia, India, Cambodia, Lao People's Democratic Republic, Sri Lanka, Myanmar, Philippines, Papua New Guinea, Singapore, Solomon Islands, Thailand, Taiwan, Province of China, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:80868-1
WFO ID wfo-0000264703
COL ID 764R2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Lyonsia sumatrana Parsonsia acuminata Parsonsia alboflavescens Parsonsia aterinervia Parsonsia cumingiana Parsonsia howii Parsonsia korthalsiana Parsonsia kunstleri Parsonsia minahassae Parsonsia oblancifolia Parsonsia oblongifolia Parsonsia spiralis Periploca alboflavescens Lyonsia viridiflora Apocynum vincifolium Parsonsia panniculata Parsonsia pauciflora Parsonsia rheedei Parsonsia laevigata Parsonsia confusa Aganosma concanensis Aganosma laevigata Chaetosus volubilis Echites laevigatus Echites spiralis Helyga javanica Cudicia trichotoma Helicandra sinensis Heligme javanica Heligme korthalsiana Heligme minahassae Heligme rheedei Heligme spiralis Parsonsia helicandra Parsonsia javanica Parsonsia longipedunculata Parsonsia magnifolia Parsonsia momiensis Parsonsia oblonga Spirostemon spiralis Parsonsia reticulata Apocynum reticulatum Parsonsia spiralis