Tephrosia aurantiaca Harms

Species

Angiosperms > Fabales > Fabaceae > Tephrosia

Characteristics

An erect perennial, probably from a woody rootstock; stems densely rusty tomentose.. Leaf-rhachis up to 8 cm. long, including a petiole of up to 16 mm., prolonged 0–8 mm. beyond lateral leaflets; stipules rather persistent, narrowly triangular or sublinear, up to 10 mm. long; leaflets 5–9, usually 7, cuneate-obovate or cuneate-elliptic, up to 6.5 cm. long by 2.4 cm. wide, rounded or acute and apiculate at the tip, glabrous or nearly so above, densely silvery and rather rusty on the veins beneath; secondary and tertiary lateral veins forming a prominent network.. Flowers orange in dense rusty or silvery tomentose shortly pedunculate terminal pseudoracemes; bracts linear-lanceolate, densely tomentose, up to 11 mm. long; bracteoles usually present on upper part of pedicels or at base of calyx; pedicels ± 5 mm. long.. Calyx rusty tomentose; tube ± 3 mm. long; upper teeth together 6–7 mm. wide, 2–3 mm. long, united to above the middle, lateral teeth triangular-acuminate, 4–6 mm., lowest tooth 6–8 mm. long.. Standard densely golden silky outside, 15–19 mm. long and wide; keel tomentose at the suture.. Upper filament firmly attached for half its length, callously thickened and sharply bent 1 mm. above the base; filament-sheath 8–10 mm., free parts 4–5 mm., anthers 0.7 mm. long.. Style glabrous, sharply upturned through 90° at the base then straight, linear, 6 mm. long, 0.6 mm. wide; stigma inturned, pubescent.. Pod (immature) ± 5 cm. long and 7 mm. wide, densely silvery-brown tomentose.. Seeds 5–6, longitudinal, probably arillate.
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Leaves pinnate with (2)3(5) pairs of leaflets; petiole (0.4)1–1.6 cm long, petiole and rachis together (1.6)4–6(8) cm long, pubescent like the stem; leaflets (2.5)4–6(7.5) × (0.5)1–2.3 cm, obovate to oblanceolate, ± cuneate at the base, obtuse to rounded or sometimes emarginate at the apex, the veins prominent and rather conspicuous on both surfaces; upper surface glabrous or very sparsely hairy, lower surface conspicuously grey pubescent especially on the veins; stipules (4)7–16 × 0.8–2(2.3) mm, linear to linear-triangular.
Calyx 9–13 mm long, densely pubescent with appressed or ascending, light to dark brown hairs; lateral teeth shorter than to about equalling the tube, the lower tooth usually distinctly longer than the tube, the two upper teeth connate for ½–? their length to form a broad triangle.
Flowers in dense terminal and axillary racemes 2–10(15) cm long; terminal raceme usually exceeding the upper leaves; bracts 5–10 × 0.8–1.5 mm, usually persistent; pedicels 3–6 mm long; bracteoles present, linear, c.3 mm long.
Pods (known only immature) 50 × 6 mm, densely brown tomentose to subvillous, tending to have darker hairs along the sutures.
Perennial suffrutex with herbaceous, probably annual, erect stems 40–130 cm high, sparingly branched to more or less bushy.
Ovary pubescent; style glabrous, reflexed above pod, with pencillate tip.
Stems tomentose with brown or sometimes greyish, crisped, ± matted hairs.
Petals 16–21 mm long, orange.
Stamen tube joined above.
Seeds c.6.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 1.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway -

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) 21 - 42
Germination temperacture (C°) 18 - 21
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Tephrosia aurantiaca world distribution map, present in Angola, Malawi, Tanzania, United Republic of, and Zambia

Conservation status

Tephrosia aurantiaca threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:520406-1
WFO ID wfo-0000201727
COL ID 55CQ2
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tephrosia aurantiaca

Lower taxons

Tephrosia aurantiaca subsp. rufopilosa