Pterocarpus brenanii Barbosa & Torre

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/32148/146814529

Conservation

LC - least concern

Flora Zambesiaca Leguminosae subfamily Papillionoideae byJ.M. Lock*

Morphology Reproductive morphology Flowers

Flowers fragrant, 16–18 mm long; pedicels 6–14 mm long. Flowers fragrant, 16–18 mm long; pedicels 6–14 mm long.

Morphology Reproductive morphology Flowers Calyx

Calyx 5–8 mm long; upper teeth obtuse, others 1.5–2.5 mm long, acute. Calyx 5–8 mm long; upper teeth obtuse, others 1.5–2.5 mm long, acute.

Morphology Reproductive morphology Flowers Corolla

Standard 12–16 mm in diameter, claw 3–5 mm long; wings as long as the standard, auricle acute, claw 4–5 mm long; keel petals shorter than the wings, dorsally sometimes slightly connate. Standard 12–16 mm in diameter, claw 3–5 mm long; wings as long as the standard, auricle acute, claw 4–5 mm long; keel petals shorter than the wings, dorsally sometimes slightly connate.

Morphology Reproductive morphology Flowers Androecium Stamens

Stamens in a single bundle, or the upper one sometimes free. Stamens in a single bundle, or the upper one sometimes free.

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary 2–3-ovulate, sparsely pilose on the midrib and suture; style c.4 mm long; stipe c.2 mm long, sparsely pilose.

Morphology Reproductive morphology Fruits

Pod 1(2)-seeded, 7–10.5 × 6.5–10 cm, broadly obovate to subcircular, moderately thickened, smooth, wing broad, coriaceous, covered in a bloom; style remnant near the apex, very small. Pod 1(2)-seeded, 7–10.5 × 6.5–10 cm, broadly obovate to subcircular, moderately thickened, smooth, wing broad, coriaceous, covered in a bloom; style remnant near the apex, very small.

Morphology Reproductive morphology Seeds

Seed 10–12 × 5–6 × 2.5 mm; testa reddish-brown. Seed 10–12 × 5–6 × 2.5 mm; testa reddish-brown.

Morphology Reproductive morphology Seeds Germination

Seedling (from Fanshawe 7600 (K)): epigeous, cotyledon-leaves 2–2.5 cm long, obovate; first leaves simple; stipules ovate-acute; petiole 4–8 mm long, slightly puberulous; lamina 2.5–3.5 × 2–4 cm, broadly ovate, obtuse to rounded at the apex, subcordate at the base, glabrous.

Ecology

Confined to the Flora area, in hot dry areas at low altitudes, in mopane, miombo and mixed deciduous woodlands, and in floodplain grassland and thickets; not recorded above 700 m.

Conservation

Conservation notes: Endemic to the Flora Zambesiaca area but apparently frequent in the dry woodlands of the Zambezi Valley. Lower Risk, Least Concern.

Morphology General Habit

Deciduous tree up to 10 m tall; bark grey-brown, longitudinally fissured, flaking off in strips. Deciduous tree up to 10 m tall; bark grey-brown, longitudinally fissured, flaking off in strips.

Morphology General Indumentum

Young parts glabrous; branchlets smooth, bark reddish. Young parts glabrous; branchlets smooth, bark reddish.

Morphology Leaves

Leaves 12–33 cm long; petiole 3–6 cm long, rachis 7–10 cm long; petiolules 3–7 mm long; leaflets (1)2–3 on each side of the rachis, usually opposite, 5–12 × 4.5–10 cm (to 19 × 16 cm on coppice shoots), rounded or sometimes broadly retuse and mucronate at the apex, rounded to subcordate at the base, chartaceous, light green on upper surface, paler beneath; lateral nerves in 6–10 pairs, slightly prominent, reticulation soon disappearing; stipules leaf-like, up to 2.5 cm long, 0.8–3 cm broad, ovate or subcordate, persistent. Leaves 12–33 cm long; petiole 3–6 cm long, rachis 7–10 cm long; petiolules 3–7 mm long; leaflets (1)2–3 on each side of the rachis, usually opposite, 5–12 × 4.5–10 cm (to 19 × 16 cm on coppice shoots), rounded or sometimes broadly retuse and mucronate at the apex, rounded to subcordate at the base, chartaceous, light green on upper surface, paler beneath; lateral nerves in 6–10 pairs, slightly prominent, reticulation soon disappearing; stipules leaf-like, up to 2.5 cm long, 0.8–3 cm broad, ovate or subcordate, persistent.

Morphology Reproductive morphology Inflorescences

Inflorescence a terminal panicle 10–25 cm long; bracts ovate-acute to narrowly lanceolate, usually present at anthesis, bracteoles linear, caducous. Inflorescence a terminal panicle 10–25 cm long; bracts ovate-acute to narrowly lanceolate, usually present at anthesis, bracteoles linear, caducous.

Morphology Reproductive morphology Flowers Gynoecium Pistil

Ovary 2–3-ovulate, sparsely pilose on the midrib and suture; style c.4 mm long; stipe c.2 mm long, sparsely pilose.

Seedling

Seedling (from Fanshawe 7600 (K)): epigeous, cotyledon-leaves 2–2.5 cm long, obovate; first leaves simple; stipules ovate-acute; petiole 4–8 mm long, slightly puberulous; lamina 2.5–3.5 × 2–4 cm, broadly ovate, obtuse to rounded at the apex, subcordate at the base, glabrous.

International Legume Database and Information Service

Conservation

Insufficiently known

Ecology

Africa: Zambezian woodland

Morphology General Habit

Perennial, Not climbing, Tree