Keetia zanzibarica (Klotzsch) Bridson

Species

Angiosperms > Gentianales > Rubiaceae > Keetia

Characteristics

Scandent shrubs, small trees or lianes; young stems glabrous to sparsely pubescent or occasionally pubescent; bark pale greyish.. Leaf-blades often turning blackish or grey when dry, narrowly elliptic to round or sometimes ovate to broadly ovate, 5–15 cm. long, 2–7.5 cm. wide, acuminate or less often obtuse to acute and often apiculate at apex, frequently unequal and rounded to truncate, obtuse or rarely subcordate at base, entirely glabrous or with the nerves sparsely pubescent or sometimes glabrescent to sparsely pubescent or rarely pubescent beneath; lateral nerves in 7–9(–10) main pairs; tertiary nerves coarsely reticulate; domatia usually present as tufts of hair; petiole 0.5–1.5 cm., glabrous to pubescent; stipules with a triangular base topped by a subulate to linear lobe 0.4–1.2 cm. long; leaves subtending lateral branches smaller but scarcely differing in shape.. Flowers 4–5-merous, borne in 30–60-flowered pedunculate cymes; peduncles 0.5–1.5 cm. long, glabrescent to sparsely pubescent; pedicels 2–8 mm. long, glabrescent to densely pubescent; bracteoles up to 2 mm. long.. Calyx-tube 0.75–1 mm. long, glabrous to densely pubescent; limb dentate, 0.5–1 mm. long, usually glabrous and ciliate or sometimes pubescent.. Corolla white; tube 2–3.25 mm. long, with a ring of deflexed hairs above the middle inside; lobes oblong-lanceolate, 1.5–2.75 mm. long, 1–1.5 mm. wide, acute to obtuse.. Anthers fully exserted, erect.. Style 5–8 mm. long, glabrous or pubescent; stigmatic knob 0.8–1.25 mm. long.. Disk pubescent.. Fruit oblong or cordate in outline, 0.8–1.3 cm. long, 1.2–1.7 cm. wide; pyrene broadly ellipsoid with ventral face flattened, 1–1.1 cm. long, 0.75–0.8 cm. wide; area above point of attachment circular on ventral plane with a central crest.
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Leaf blade 5–15 × 2–7.5 cm, narrowly elliptic to round or sometimes ovate to broadly ovate, acuminate or less often obtuse to acute and frequently apiculate at the apex, obtuse rounded truncate or rarely subcordate at the base, usually chartaceous or occasionally almost subcoriaceous, dull or sometimes shiny on upper surface, entirely glabrous with the nerves pubescent beneath or glabrescent to pubescent beneath; lateral nerves in 7–9(10) main pairs; tertiary venation coarsely reticulate; domatia usually present as hairy tufts; petiole 5–15 mm, glabrous to pubescent; stipules 4–12 mm long, with a triangular base topped by a subulate to linear lobe; leaves subtending lateral branches smaller but scarcely differing in shape.
A shrub or small tree. It can be a woody creeper. It grows 2-6 m tall. The bark is pale grey. The leaves are oval and the base is often unequal and rounded. They have a short blunt tip. Leaves are 5-12 cm long by 2-7 cm wide. The flowers are white or yellowish-green. The fruit are oval or heart shaped and 10-12 mm long. They have 2 seeds.
Flowers sweetly scented, 4–5-merous, borne in 30–60-flowered pedunculate cymes; peduncles 5–15 mm long, glabrescent to sparsely pubescent; pedicels 2–8 mm long, glabrescent to densely pubescent; bracteoles up to 2 mm long.
Corolla white; tube 2–3.25 mm long, with a ring of deflexed hairs above the mid-point inside; lobes 1.5–2.75 × 1–1.5 mm, oblong-lanceolate, acute to obtuse.
Pyrene 8–11 × 7.5–8 mm, broadly ellipsoid with ventral face flattened; area above point of attachment on ventral plane circular with a central crest.
Calyx tube 0.75–1 mm long, glabrous to densely pubescent; limb dentate 0.5–1 mm long, glabrous except for the ciliate teeth or sometimes pubescent.
Scandent shrubs, small trees or lianas; young stems glabrous to sparsely pubescent or very occasionally pubescent; bark pale greyish.
Fruit 8–13 × 12–17 mm, oblong or obcordate in outline.
Pollen presenter 0.5–1.25 mm long; disk pubescent.
Style 5–8 mm long, glabrous or pubescent.
Anthers fully exserted, erect.
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Growth form
Growth support climber
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Sexuality hermaphrodite
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Mature height (meter) 2.0 - 6.0
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Environment

It is a tropical plant. It grows between sea level and 450 m altitude. It grows on the edge of forests and in wooded grassland.
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Hardiness (USDA) 9-12

Usage

Uses food medicinal
Edible fruits
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Cultivation

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Distribution

Keetia zanzibarica world distribution map, present in Central African Republic, Ethiopia, Kenya, Mozambique, Rwanda, Sudan, Tanzania, United Republic of, Uganda, and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:943140-1
WFO ID wfo-0000220742
COL ID 6NJDC
BDTFX ID -
INPN ID 706447
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Keetia zanzibarica Plectronia zanzibarica Canthium zanzibaricum Canthium longistylum

Lower taxons

Keetia zanzibarica subsp. cornelioides Keetia zanzibarica subsp. gentilii Keetia zanzibarica subsp. zanzibarica