Brachystegia taxifolia Harms

Species

Angiosperms > Fabales > Fabaceae > Brachystegia

Characteristics

Tree, treelet or bush, (1–)2–6(–16) m. high, with bole up to 1 m. in diameter; all young parts (except the leaflets) rather coarsely pubescent with fulvous to dark brown hairs; bark at first grey to whitish, becoming deeply and irregularly fissured, dark grey to black below (? only when burnt); crown flat, obconic or umbrella-shaped, dense, the dark foliage semi-evergreen; branchlets short, stiff.. Stipules free or very shortly connate, intrapetiolar, subulate, stiff, 1–2 cm. long, usually very persistent; auricles variable, tooth-like to digitate or 0.. Leaves with (20–)25–35(–45) pairs of very small leaflets, the middle pairs the largest; petiole 1–2 mm. long; rhachis channelled, (3–)4–8(–10) cm. long, intervals narrowly winged; leaflets narrowly oblong to falcate, 5–10(–15) × l–2(–3) mm., acute or rounded at apex, very obliquely rounded or truncate to subcordate at base; principal nerve submarginal; surfaces very discolorous, glabrous or puberulous, upper dark green, rugose with transverse nerves (or the nerves very obscure or invisible), lower glaucous or whitish.. Panicles terminal, small, dense, reduced to racemes when (often) depauperate.. Flowers greenish-white; bracteoles 6–9(–10) × 4.5–6(–7) mm.. Tepals 5–7(–8), usually all sepaloid, broadly imbricate, 2–4 × 0.5–3 mm., grading from very broad to narrow, densely ciliate with long brown hairs.. Stamens ± 10, free; filaments 9–15 mm. long.. Ovary 3–4 × 1–2 mm., ± densely crispate-setose; style 10–12 mm. long; stigma rather prominent.. Pod up to 12 × 4 cm., thinly woody, smooth but often transversely nervose, maturing pale to mid-brown, often lenticellate; sutural wings spreading, each 4–5 mm. wide.. Fig. 35/6, p. 160.
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Leaves 6–12 cm long; petioles 2–4 mm long; rachis deeply canaliculate with raised and winged margins; stipels present, rusty-pubescent; leaflets in 20–45 overlapping pairs, the middle leaflet pairs the largest, 5–20 × 1–4 mm, narrowly oblong-falcate, acute to round at the apex, rounded to cordate at the base, glabrous or pubescent; midveins excentric, with 2–3 secondary veins diverging fanwise from the proximal leaflet base.
Inflorescences of compact, terminal and/or axillary panicles up to 5 cm long, densely puberulous; bracts 2–4 × 2–3 mm, ovate to deltate, caducous, pubescent; bracteoles 6–10 × 3.5–6 mm, orbicular, pubescent.
Stipules persistent, up to 15 × 1.5 mm, shortly connate at the base, linear, pubescent; auricles up to 7 × 5 mm, reniform, tooth-like to digitate, pubescent.
Pods 4–13 × 2.5–4 cm, round to obtuse at the apex, flanges suberect or revolute.
Sepals 5; 2–4 × 1–3 mm, oblong to obovate, imbricate, margins densely ciliate.
Tree 1.5–12 m tall; bark reticulate to deeply fissured longitudinally, grey.
Stamens 10, united to 1 mm at base, filaments 9–15 mm long.
Ovary 3–5 × 1–2 mm, up to 8-ovulate, stipe to 2.5 mm long.
Flowers 4–6 × 2.5–3 mm; pedicels up to 2.5 mm long.
Seeds up to 15 × 15 mm, circular to oblong.
Dormant axillary buds much flattened.
Petals 0–3, filiform, linear.
Life form perennial
Growth form tree
Growth support -
Foliage retention
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 2.0 - 6.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Locally dominant, esp. on wetland margins, hill slopes, river banks, rocky plateau areas; common in sandy and poor stony leached soils, esp. at high elevations and high rainfall areas. Also an undershrub in mixed open woodlands; 1,000-1,800 m.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses charcoal fiber material wood
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Brachystegia taxifolia world distribution map, present in Angola, Malawi, Tanzania, United Republic of, and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:482261-1
WFO ID wfo-0000214012
COL ID N25M
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Brachystegia mimosifolia Brachystegia subfalcato-foliolata Brachystegia taxifolia