Xysmalobium gerrardii Scott Elliot

Species

Angiosperms > Gentianales > Apocynaceae > Xysmalobium

Characteristics

Plant branching at the base; branches simple or sparingly branched, erect or perhaps decumbent at the base, more or less pubescent; leaves shortly petiolate, 1.25-2.5 in. long, 0.33-1 in. broad, lanceolate, oblong-lanceolate or oblong-ovate, obtuse or acute, varying from acute to almost subcordate at the base, thinly and harshly pubescent on both sides, slightly scabrid at the margins; umbels usually 2-4 to a branch, occasionally solitary on weak branches, lateral and terminal, pedunculate, 6-14-flowered; peduncles 0.33-1 in. long, pubescent on one side; bracts 1.5-2 lin. long, filiform-subulate; pedicels rather slender, 3-4 lin. long, pubescent; sepals ascending, 1.5 lin. long, 0.5 lin. broad, linear-lanceolate, acute, pubescent; corolla-lobes suberect, 1.75-2 lin. long, about 1 lin. broad, ovate-oblong, obtuse, with recurved margins, without a gibbosity on the glabrous inner face, more or less pubescent on the back near the apex, yellow or yellowish; corona-lobes arising close to or slightly above the base of the staminal column and very distinctly longer than it, erect, slightly incurved, not contiguous, 0.75-1.33 lin. long, 0.33 to nearly 0.5 lin. broad, fleshy, oblong-linear, very convex on the back and flattened on the inner face or perhaps subterete, not clavate as originally described, obtuse; staminal column 1 lin. long; anthers sub-quadrate, slightly broader at the base, with orbicular appendages inflexed over the truncate style-apex; follicles not seen.
More
Perennial, geophytic herb, decumbent, 300-415 mm long; stems 5(-10), radiating from stem tuber, branched well above base. Leaves spreading-erect, lanceolate 30-62 x 10.0-23.5 mm, base trullate, apex acute, rough, sparsely hairy; midrib and secondary veins prominent, venation reticulate. Inflorescences terminal often paired and axillary, somewhat corymbose, hemispherical, 22-20 mm in diam., 8-18-flowered. Flowers greenish yellow. Corolla erect, lobes ovate, 3.0-4.5 x 1.5-3.0 mm, margins slightly revolute; lower surface long-hairy. Staminal column not stipitate. Corona solid, fleshy, columnar, linear-oblong, 2-3 mm high, 0.5-1.0 mm wide, not contiguous, upper end blunt slightly inflexed over style-stigma-head, protruding by ± 1 mm. Anthers transversely elliptic. Follicle erect, fusiform, 58 x 5-6 mm, long-bristly.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.02 - 0.03
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
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°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Xysmalobium gerrardii world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:103105-1
WFO ID wfo-0001103484
COL ID 5CPZV
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gomphocarpus ochroleucus Asclepias ochroleuca Xysmalobium gerrardii