Xysmalobium tysonianum (Schltr.) N.E.Br.

Species

Angiosperms > Gentianales > Apocynaceae > Xysmalobium

Characteristics

Stems probably several from a tuber, branching at the base only, 6-9 in. long, apparently decumbent, more or less pubescent, with short spreading jointed hairs; leaves 5-8 pairs to a stem or branch, 0.75-1.75 in. distant, spreading; petiole 1-2 lin. long; blade 0.75-2 in. long, 4-8 lin. broad, ovate-lanceolate or oblong-lanceolate, acute at the apex, broadly cuneate, rounded or slightly subcordate at the base, flat, thinly pubescent on both sides with spreading hairs; umbel solitary, terminal, pedunculate, hemi-spherical, 16-20-flowered; peduncle 1.5-4 in. long, pubescent; bracts 1.5 lin. long, subulate, pubescent, very deciduous; pedicels 3 lin. long, pubescent with short spreading hairs; sepals 1.25-1.5 lin. long, about 0.33 lin. broad, lanceolate, acute, pubescent; corolla about 2 lin. in diam., pubescent outside, glabrous within, yellow or greenish-yellow; lobes 1.33-1.5 lin. long, 1-1.25 lin. broad, ovate or elliptic-ovate, subacute, erect, incurved at the apex over the corona, the sides slightly folded back at the lower half; corona-lobes arising about 0.33 lin. above the base of the staminal column and shortly overtopping it, 0.75-1 lin. long, 0.3-0.4 (or when dorsally pressed 0.66 lin.) lin. broad, erect, not contiguous (unless dorsally pressed), thick and fleshy, compressed-oblong (or elliptic from dorsal pressure), obtuse, slightly incurved upon the anther-tips at the apex, flat on the inner face, very convex on the back; staminal column 1 lin. long; anthers very small, erect, quadrate, their appendages reniform, erect, applied to the margin of the style-apex, and their wings small and not very conspicuous; style-apex cushion-like, not exceeding the anther-appendages; follicle solitary, erect upon a deflexed pedicel, lanceolate, gradually tapering into a beak, smooth, puberulous.
More
Perennial, geophytic herb, 150-230 mm long; stems 8-11, much branched near base, decumbent. Leaves spreading to erect, lanceolate to ovate, 35-54 x 11-21 mm, base truncate, apex acute, indumentum softly hairy. Inflorescences terminal, subglobose, 23-20 mm in diam., 15-20-flowered. Flowers yellowish green. Corolla erect, globose-campanulate; lobes ovate-elliptic, 2.5-3.5 x 1.5-2.5 mm, margins slightly reflexed, apex inflexed; lower surface pubescent. Staminal column ± 2 mm high, stipitate by ± 0.7 mm. Corona solid and fleshy, yellow, oblong, contiguous, slightly longer (± 2.3 mm) than high (± 1.5 mm), upper end blunt. Anther reniform, incumbent on style-stigmahead margin. Flowering time Oct.-Jan. Follicle fusiform, glabrous or shortly downy, stalk recurved.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 7-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
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Germination treatment -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Distribution

Xysmalobium tysonianum world distribution map, present in Lesotho and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:103153-1
WFO ID wfo-0001103487
COL ID 5CQ3F
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Xysmalobium tysonianum Asclepias tysoniana