Pyrostria bibracteata (Baker) Cavaco

Species

Angiosperms > Gentianales > Rubiaceae > Pyrostria

Characteristics

Shrub or small tree 2–10 m. tall, glabrous; young stems covered with pale grey bark.. Leaf-blades turning black-brown or brown when dry, elliptic to broadly elliptic or sometimes oblong-elliptic, 4–12.5 cm. long, 1.5–6 cm. wide, acute to obtuse at apex, acute to cuneate or occasionally rounded at base, stiffly papery to subcoriaceous, dull above; lateral nerves in 4–5 main pairs; tertiary nerves obscure; domatia sometimes present as tufts of hair; petiole 2–7 mm. long; stipules triangular at base, lobed above, 0.4–1.4 cm. long altogether, caducous.. Flowers hermaphrodite (or mostly so), 4-merous, in 4–30-flowered umbels; peduncles 2–4 mm. long; pedicels 1.5–5 mm. long, usually glabrous; bracts 2–7 mm. long, acuminate.. Calyx-tube ± globose, ± 1 mm. in diameter; limb reduced to a rim or unequally lobed, up to 1 mm. long.. Corolla yellowish cream; tube 2–3 mm. long, densely congested with hairs at throat; lobes ovate-triangular, 2–2.5 mm. long, 1.25 mm. wide, shortly apiculate.. Stigmatic knob 0.75–1 mm. across.. Fruit yellow, edible, almost globose or somewhat laterally compressed, 5–8 mm. in diameter, scarcely indented at apex; pyrene obovoid, flattened on ventral face, 5.5–6 mm. long, 2–3 mm. wide, with a shallow crest extending around the apex, slightly rugulose.. Fig. 132/22, p. 754.
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Leaves turning black-brown or brown when dry; blades 2.5–13.5 × 1–7 cm, elliptic to broadly elliptic or sometimes oblong-elliptic, acute to obtuse at apex, acute to cuneate or occasionally rounded at base, stiffly papery to subcoriaceous, dull above; lateral nerves in 4–5 main pairs; tertiary nerves obscure; domatia sometimes present as tufts of hair; petiole 2–7 mm long; stipules 4–14 mm long, triangular at their base with a lobe above, caducous.
An evergreen shrub or small tree. It grows 2-10 m tall. The bark is smooth and pale grey. The leaves are simple and opposite. They are broadly oval and 13.5 cm long. They are stiff and somewhat leathery. The flowers are in groups of 30. They are yellow or cream and small. The fruit are yellow and 5-8 mm across. The fruit are edible.
Flowers hermaphrodite (or mostly so), 4-merous, borne in 4–30-flowered umbels; peduncles 2–4 mm long; pedicels 1.5–5 mm long, glabrous; bracts 2–7 mm long, acuminate.
Corolla yellowish-cream; tube 2–3 mm long, densely congested with hairs at throat; lobes 2–2.5 × 1.25 mm, ovate-triangular, shortly apiculate.
Pyrene 5.5–6 × 2–3 mm, obovoid with ventral face flattened, with a shallow crest extending around the apex, slightly rugulose.
Fruit yellow, edible, 5–8 mm in diameter, almost globose or somewhat laterally compressed, scarcely indented at the apex.
Calyx tube ± globose, c. 1 mm in diameter; limb reduced to a rim, or unequally lobed, up to 1 mm long.
Shrub or small tree 2–10 m tall, glabrous; young stems covered with pale grey bark.
Pollen presenter 0.75–1 mm across.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 2.0 - 10.0
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Fruit color
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Bushland, bushed grassland or secondary bushland, in woodland or on forest edges at elevations from sea level to 900 metres. Usually found on high water-table sandy soils, also on margins of evergreen rain forest.
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It is a tropical plant. It grows on woodland and usually where there is a high water-table. It grows from sea level to 700 m above sea level.
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Hardiness (USDA) 9-12

Usage

The ripe fruit can be eaten as a snack.
Uses environmental use fuel material medicinal wood
Edible fruits seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown by seeds.
Mode seedlings
Germination duration (days) -
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Germination luminosity -
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Distribution

Pyrostria bibracteata world distribution map, present in Kenya, Madagascar, Mozambique, Seychelles, Tanzania, United Republic of, and Zimbabwe

Conservation status

Pyrostria bibracteata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:763900-1
WFO ID wfo-0000289269
COL ID 4QVF7
BDTFX ID -
INPN ID 706742
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Plectronia bibracteata Pyrostria bibracteata Canthium bibracteatum Pyrostria comorensis