Pavetta johnstonii Bremek.

Species

Angiosperms > Gentianales > Rubiaceae > Pavetta

Characteristics

?Shrub or small tree 2–5 m. tall; young branches pubescent; older branches gnarled or smooth with buff, dull bark.. Leaves confined to the apices of the branches; blades drying brownish, narrowly obovate to obovate, 8–17 cm. long, 3.2–8 cm. wide, apex rounded or sometimes acute, base cuneate, sparsely pubescent above, pubescent beneath with dense longer hairs on the nerves; bacterial nodules small, dot-shaped, few to several, scattered; petiole 1–10 mm. long, densely pubescent; stipules truncate to triangular, 4–8 mm. long, acuminate to long acuminate, pubescent or glabrous above and glabrescent at base outside, with silky hairs inside.. Corymbs borne on leafless branches 0–11 cm. long arising shortly or immediately below the leafing apices of the main stems on both sides or sometimes only one, compact to very compact, 1.5–2.5 cm. across; primary inflorescence-branches up to 2 mm. long, pubescent; secondary branches very reduced; pedicels 2–5 mm. long, pubescent; bracts stipule-like; bracteoles inconspicuous.. Calyx pubescent; tube ± 1 mm. long; limb-tube 1–1.5 mm. long, slightly wider than the tube; lobes linear-subulate from a triangular base, 1.5–4.5 mm. long, ± 0.25 mm. wide.. Corolla-tube 1.2–1.4 cm. long, ± 1 mm. wide, glabrous outside, not bearded at throat; lobes 4–5 mm. long, 2–2.5 mm. wide.. Fruit black (or red), 6–7 mm. in diameter, shiny, sparsely hairy; calyx-limb persistent.. Mature seeds not known.
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Leaves confined to the apices of the branches; blades drying brownish, 8–17 × 3.2–8 cm, narrowly obovate to obovate, rounded or sometimes acute at the apex, cuneate at the base, sparsely pubescent above, pubescent beneath with dense longer hairs on the nerves; lateral nerves in c. 10 main pairs; domatia absent, but sometimes with hairs in nerve axils somewhat denser than surrounding area; bacterial nodules small, dot-like, few to several, scattered; petiole 1–10(15) mm long, densely pubescent; stipules truncate to triangular, 4–8 mm long, acuminate to long acuminate, pubescent or glabrous above and glabrescent at base outside, with silky hairs inside.
Inflorescences compact (sometimes tightly so), 1.5–2.5 cm across (excluding corollas), or rarely (in subsp. A) lax and c. 6.5 mm across; primary inflorescence branches up to 2 mm long, pubescent; secondary branches very reduced; pedicels 2–5 mm long, pubescent; bracts stipule-like; bracteoles inconspicuous.
Inflorescence-supporting branches leafless, 0–12(12.5) cm long arising shortly or immediately below the leafing apices of the main stems, on both sides, or sometimes only one.
Calyx pubescent; tube c. 1 mm long; limb-tube 1–1.5 mm long; slightly wider than the tube; lobes linear-subulate from a triangular base, 1.5–4.5 mm long, c. 0.25 mm wide.
Shrub? or small tree 2–5 m tall; young branches pubescent; older branches gnarled or smooth with buff-coloured or rarely (in subsp. A) red-brown, dull bark.
Corolla tube 1.2–1.4(1.6) × c. 0.1 cm, glabrous outside, not bearded at the throat; lobes 4–5 × 2–2.5 mm.
Fruit black (or red) 6–7 mm in diameter, shiny, sparsely hairy; calyx limb persistent.
Mature seeds not known.
Life form -
Growth form tree
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Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 2.0 - 5.0
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Environment

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Hardiness (USDA) 9-12

Usage

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Edible -
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Cultivation

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Distribution

Pavetta johnstonii world distribution map, present in Mozambique, Tanzania, United Republic of, and Zambia

Conservation status

Pavetta johnstonii threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:759765-1
WFO ID wfo-0000265512
COL ID 766G5
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Pavetta johnstonii

Lower taxons

Pavetta johnstonii subsp. johnstonii Pavetta johnstonii subsp. breviloba