Humularia welwitschii (Taub.) P.A.Duvign.

Species

Angiosperms > Fabales > Fabaceae > Humularia

Characteristics

Leaves 6–16(22)-foliolate; leaflets 9–45 × 5–30 mm, elliptic or elliptic-oblong, often oblique, obtuse to acute and mucronulate at the apex, obliquely unequally rounded at the base, glabrous or glandular-serrate; the main nerve oblique dividing the lamina into unequal parts, the one 1.5–2 times as broad as the other; venation strongly reticulate, there being 5 other basal nerves; petiole 10–15 mm long; rhachis 2.5–7 cm long, with similar indumentum to the stem, the rhachis prolonged into a bristle 3 mm long; stipules 6–20 × 4–15 mm, elliptic or elliptic-oblong, rounded at base and apex, glabrous to densely scabrid with tubercular-based hairs, densely veined with numerous approximate basal nerves.
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Inflorescences often borne on branches with leaves reduced to stipules, 4–6 cm long, mostly densely strobilate; peduncle 1–2 cm long, scabrid-pubescent; pedicels 5 mm long, pubescent; bracts yellow, 8–25 × 15–24 mm, rounded, divided for one-sixth to half of their length into two rounded lobes which are venose, glabrous to densely covered with tubercular-based hairs; bracteoles 4–6 × 1.5–2.5 mm, oblong to ovate-lanceolate, ciliate and with tubercular-based hairs.
Fruit of 1–2 articles, each article half-elliptic, the upper margin straight, the lower very strongly curved, 5–6 mm long and wide, glandular-pubescent.
Stems mostly robust and woody, branched, subcylindrical, glabrous, pubescent or densely scabrous with tubercular-based hairs, viscid-glandular.
Seeds dark reddish-brown, 4 mm long and wide, 2 mm thick, irregularly oblong in outline; the small hilum eccentric.
Calyx lobes 10–11 × 5 mm, elliptic-oblong, the upper shortly 2-fid, the lower shortly distinctly 3-fid.
Standard yellow, 12–17 × 7–12 mm, rectangular with upper half broadly widened and rounded.
Erect shrub or subshrub 0.15–1 m tall.
Life form perennial
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 10-12

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

Humularia welwitschii world distribution map, present in Angola and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:498759-1
WFO ID wfo-0000175154
COL ID 6MFMM
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Humularia welwitschii Geissaspis castroi Damapana welwitschii Smithia welwitschii Geissaspis welwitschii

Lower taxons

Humularia welwitschii var. gossweileri Humularia welwitschii var. lundaensis Humularia welwitschii var. welwitschii