Eriosema buchananii Baker F.

Species

Angiosperms > Fabales > Fabaceae > Eriosema

Characteristics

Perennial herb or subshrub up to approximately 0.6 m, with simple or sparsely branched, erect stems from a woody rootstock. Stems shallowly grooved with scattered orange to red spherical glands, densely covered with spreading ferruginous hairs, longer on the ridges and shorter, erect to appressed, in the grooves. Leaves trifoliolate, lower leaves often unifoliolate. Stipules free, 1.0-1.6 mm long, 2.5-4.0 mm wide; lanceolate, base narrower than middle, acinaciform (scimitar-shaped), often falcate; glabrous inside, ferruginous hairy outside. Petiole 2-8 mm long. Leaflets 3.2-6.8 cm long, 1.0-3.5 cm wide; laterals smaller 1.4-5.9 cm long, 1.0-2.5 cm wide; elliptic (2:1), otherwise ovate (1.5:1) to ovate lanceolate (3:1 or more) base slightly cordate, rounded, or truncate; apex acute, mucronate; margin entire, revolute; veins below raised, chestnut coloured and thickly appressed pilose in contrast to shorter, erect pilose areas between veins; veins above thinly appressed pilose; numerous small orange glands scattered below, occasionally above; terminal leaflet symmetrical; lateral leaflets asymmetrical, base oblique, width ratio 1:2. Young leaves ferruginous pilose on veins, intervening areas packed with orange glands and softly pubescent to pilose; petiolules 2.0-3.0 mm long, acropetiolar parts thickened, blackish, hairs denser. Rachis 0.5-1.5 mm long, canaliculate. Racemes up to 40-flowered; peduncle 5-23 cm long, grooved, glandular, densely covered with a mixture of long and short ferruginous hairs; rachis 2-6 cm long; pedicels erect about 60° to axis, 1.0-1.5 mm long, recurved at apex, glabrous at base just above bract abscission scar. Calyx (4.0)4.5-5.0(5.7) cm long; externally spreading pilose and gland dotted, with shorter hairs near the base, and longer denser hairs on the lobes and creases; internally finely hairy on lobes but restricted mainly to veins and the horn lobes; tube 2.0-3.0 mm long, being longer between the horn lobes, 2.3-3.3 mm long, circumference 5.0-5.3 mm, tissue distinctly bulged between the horn lobes when the calyx is flattened; lobes triangular unequal, horn lobes partly connate, 4.2-5.2 mm long; lateral lobes 3.9-5.0 mm long, keel lobe 4.0-5.7 mm, longest; lobes more or less equalling the tube. Standard very pale pink lined with dark purple; 7.7-10.7 mm long, 3.0-4.6 mm wide; oblong (2:1), narrowed in the middle, appendages occur above the middle and are slight ridges often difficult to see; claw 2.2-3.6 mm; auricles prominent, incurved, 3.5-4.5 mm apart. Wings 7.3-9.0 mm long, 1.8-2.0 mm wide, longer than keel, ratio 1:1.2; narrowly oblong (3:1); claw 2.5-3.5 mm, auricle 1.2-1.9 mm high. Keel blades 6.1-8.0 mm long, 2.0-2.6 wide at maximum; claw 2.0-3.0 mm long; a few hairs along baseline, glandular. Staminal sheath 5.2-6.5 mm long, 1.9-2.6 mm wide at maximum, vexillar stamen 4.5-6.2 mm long, basal knee 0.5-0.8 mm long. Gynoecium 5.0-7.2 mm long; ovary 2.0-3.0 mm long, with stalk 0.3-1.0 mm long; hairs on ovary wall up to 2.5 mm long, distinctive, wavy, not stiff; style slightly bent and thickened towards end; curvature 1.1-2.0 mm high; stigma small capitate, inserted. Discoid floral nectary 0.3-0.6 mm high, margin slightly wavy, often revolute. Fruits and seeds not seen. E. buchananii flowers from November to January, with a peak in December.
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Perennial subshrubby herb, 0·1–1·5 m. tall, from a woody rootstock.. Branches erect or decumbent, densely covered with spreading ferruginous hairs.. Leaflets (1–)3, round to ovate-lanceolate, the laterals mostly rather oblique, 0·9–9·5 cm. long, 0·7–4 cm. wide, elliptic to subacute and mucronu-late at the apex, rounded to distinctly truncate at the base, adpressed pilose above and at least on the raised usually brownish venation beneath, the rest of leaflet-surface often glabrous but with scattered small orange glands; young leaves densely ferruginous pilose; petiole 2–10 mm. long; rhachis 0·5–1·5 cm. long; petiolules 2–3 mm. long; stipules ovate to oblong-lanceolate, often falcate, 0·8–1·8 cm. long, 3–6·5 mm. wide, hairy, closely veined.. Racemes with a rhachis 2–9 cm. long; peduncle 2·5–20 cm. long, densely covered with spreading ferruginous hairs; pedicels 1·5 mm. long, recurved.. Calyx dark purplish or reddish, spreading pilose and gland-dotted, 5–6 mm. long; lobes triangular or lanceolate, ± equalling or longer than the tube.. Standard cream, pink or white and purple often lined with purple, rarely yellow, oblong, often narrowed in the middle, ± 0·8–1 cm. long, 2·5–5·7 mm. wide, the appendages situated above the narrow middle; wings white or cream; keel greenish-brown.. Pods ovate-oblong, 1·2–1·4 cm. long, 0·7–1·2 cm. wide, covered with long hairs, short hairs and glands.. Seeds dark blackish-brown or chestnut mottled with dark brown, oblong-elliptic, longest dimension 3·5 mm., shorter dimension 2–2·5 nun., 1·3 mm. thick; rim-aril cream.
Perennial subshrubby herb, 0.1-1.5 m tall from a woody rootstock. Branches erect or decumbent, densely covered with spreading ferruginous or yellowish hairs. Leaflets (1)3, 0.9-9.5 x 0.7-4 cm, round to ovate-lanceolate, the laterals mostly rather oblique, elliptic to subacute and mucronulate at the apex, rounded to distinctly truncate at the base, appressed pilose above and at least on the raised usually brownish venation beneath, the rest of leaflet surface often glabrous but with scattered small orange glands; young leaves densely ferruginous pilose; petiole 2-10 mm long; rhachis 5-15 mm long; petiolules 2-3 mm long; stipules 8-18 x (2.2)3-6.5 mm, ovate to oblong-lanceolate, often falcate, hairy, closely veined. Racemes with a rhachis 2-9 cm long; peduncle 2.5-20 cm long, densely covered with spreading ferruginous hairs; pedicels 1.5 mm long, recurved. Calyx dark purplish or reddish, spreading pilose and gland-dotted, 5-6 mm long; lobes triangular or lanceolate, ± equalling or longer than the tube. Standard cream, pink or white and purple or blue often lined with purple, rarely yellow, c. 8-13 x 2.5-5.7(7) mm, oblong, often narrowed in the middle, the appendages situated above the narrow middle, often reduced or absent; wings white or cream; keel greenish-brown. Pods 12-14 x 7-12 mm, ovate-oblong, covered with long hairs, short hairs and glands. Seeds dark blackish-brown or chestnut-brown mottled with dark brown, 3.5 x 2-2.5 x 1.3 mm, oblong-ellipsoid; rim aril cream-coloured.
Leaflets (1)3, 0.9–9.5 × 0.7–4 cm, round to ovate-lanceolate, the laterals mostly rather oblique, elliptic to subacute and mucronulate at the apex, rounded to distinctly truncate at the base, appressed pilose above and at least on the raised usually brownish venation beneath, the rest of leaflet surface often glabrous but with scattered small orange glands; young leaves densely ferruginous pilose; petiole 2–10 mm long; rhachis 5–15 mm long; petiolules 2–3 mm long; stipules 8–18 × (2.2)3–6.5 mm, ovate to oblong-lanceolate, often falcate, hairy, closely veined.
Standard cream, pink or white and purple or blue often lined with purple, rarely yellow, c. 8–13 × 2.5–5.7(7) mm, oblong, often narrowed in the middle, the appendages situated above the narrow middle, often reduced or absent; wings white or cream; keel greenish-brown.
Calyx dark purplish or reddish, spreading pilose and gland-dotted, 5–6 mm long; lobes triangular or lanceolate, ± equalling or longer than the tube.
Racemes with a rhachis 2–9 cm long; peduncle 2.5–20 cm long, densely covered with spreading ferruginous hairs; pedicels 1.5 mm long, recurved.
Seeds dark blackish-brown or chestnut-brown mottled with dark brown, 3.5 × 2–2.5 × 1.3 mm, oblong-ellipsoid; rim aril cream-coloured.
Branches erect or decumbent, densely covered with spreading ferruginous or yellowish hairs.
Pods 12–14 × 7–12 mm, ovate-oblong, covered with long hairs, short hairs and glands.
Perennial subshrubby herb, 0.1–1.5 m tall from a woody rootstock.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 1.5
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) 9-12

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

Eriosema buchananii world distribution map, present in Kenya, Mozambique, Malawi, Tanzania, United Republic of, Uganda, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:493990-1
WFO ID wfo-0000195388
COL ID 3B64G
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Eriosema buchananii

Lower taxons

Eriosema buchananii var. subprostratum Eriosema buchananii var. buchananii