Hymenodictyon parvifolium Oliv.

Species

Angiosperms > Gentianales > Rubiaceae > Hymenodictyon

Characteristics

Shrub or small tree (1.2–)3.6–4.5(–10) m. tall or occasionally a liane; branchlets glabrescent or pubescent to densely scabrid pubescent with short scaly hairs; bark light grey or purplish-grey, smooth or rarely rough.. Leaf-blades elliptic to oblanceolate, 1–9 cm. long, (0.4–)0.8–4.7(–5.9) cm. wide, obtuse to subacuminate at the apex, narrowly cuneate at the base, decurrent into the petiole, glabrous to densely covered with scabrid scaly hairs and more rarely thinner pubescence; petiole often crimson, 0.3–5.5 cm. long; stipules deltoid or oblong-triangular, 2–7 mm. long, 2 mm. wide, sometimes bifid, glabrous.. Inflorescences terminal often with additional axillary ones, often numerous at apices of short lateral shoots, forming a thyrsoid panicle, 1–8 cm. long the axis glabrescent, pubescent or densely scabrid; flowers very sweetly (unpleasantly fide Greenway) scented; peduncle 0.3–2.5 cm. long; pedicels 1.5 mm. long; primary bracts not present; secondary bracts lanceolate, 4–6 mm. long, 0.3–1.5(–3) mm. wide, glabrescent, ciliate or scaly-pubescent, deciduous.. Calyx-tube subglobose to oblong-ellipsoid, 1–1.5mm. long, glabrous or glabrescent to scabrid-pubescent; lobes lanceolate, (0.5)1.5–2.5mm. long with similar indumentum.. Corolla white, greenish white or yellow, sometimes tinged red in bud, sometimes turning black; glabrous or puberulous; tube cylindrical below, funnel-shaped above, 2.5–5 mm. long; lobes 5–6, ovate, 1.5 mm. long, 1 mm. wide, ciliolate; style 1.4 cm. long, exserted from the corolla for ± 3–5(–7) mm.; stigma ellipsoid, 0.5 mm. long.. Capsules ellipsoid, reddish brown, drying grey-brown, 1.5–2.5(–4) cm. long, 0.7–1 cm. wide, prominently lenticellate, splitting at the ± acute apex into 2 valves, each itself often splitting for a short distance.. Seeds straw-coloured, broadly elliptic, 0.8–1.6(–2) cm. long, 0.6–0.9(–1.3) cm. wide, the nucleus broadly elliptic, strongly compressed, very broadly winged, the whole surface with testa strongly reticulate and slightly shining, the wing slit at the hilar end.
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Inflorescences terminal, often with additional axillary ones, often numerous at apices of short lateral shoots forming a thyrsoid panicle, 1–8 cm long, the axis glabrescent, pubescent or densely scabrid; flowers very sweetly (unpleasantly fide Greenway) scented; peduncle 0.3–2.5 cm long; pedicels 1.5 mm long; primary bracts not present; secondary bracts 4–6 × 0.3–1.5(3) mm wide, lanceolate, glabrescent, ciliate or scaly-pubescent, deciduous.
Leaf blades 1–9 × (0.4)0.8–4.7(5.9) cm, elliptic to oblanceolate, obtuse to subacuminate at the apex, narrowly cuneate at the base and ± decurrent into the petiole, glabrous to densely covered with scabrid scaly hairs and more rarely thinner pubescence; petiole 0.3–5.5 cm long, often crimson; stipules 2–7 × 2 mm, deltoid or oblong-triangular, sometimes bifid, glabrous.
Corolla white, greenish-white or yellow, sometimes tinged red in bud, sometimes turning black; glabrous or puberulous; tube 2.5–5 mm long, cylindrical below, funnel-shaped above; lobes 5–6, 1.5 × 1 mm, ovate, ciliolate; style 1.4 cm long, exserted from the corolla for about 3–5(7) mm; pollen presenter 0.5 mm long, ellipsoid.
Seeds straw-coloured, 0.8–1.6(2) × 0.6–0.9(1.3) cm, broadly elliptic, the nucleus broadly elliptic, strongly compressed, very broadly winged, the whole surface with testa strongly reticulate and slightly shiny, the wing slit at the hilar end.
Shrub or small tree (1.2)3.6–6(10) m tall or occasionally a liane or scrambler to 10.5 m; branchlets glabrescent or pubescent to densely scabrid-pubescent with short scaly hairs; bark light grey or purplish-grey, smooth or rarely rough.
Capsules reddish-brown drying grey-brown, 1.5–2.5(4) × 0.7–1 cm, ellipsoid, prominently lenticellate, splitting at the more or less acute apex into 2 valves, each itself often splitting for a short distance.
Calyx tube 1–1.5 mm long, subglobose to oblong-ellipsoid, glabrous or glabrescent to scabrid-pubescent; limb-tube ± absent; lobes (0.5)1.5–2.5 mm long, lanceolate, with similar indumentum.
Life form perennial
Growth form
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.6 - 4.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Hymenodictyon parvifolium unspecified picture

Distribution

Hymenodictyon parvifolium world distribution map, present in Kenya, Mozambique, Tanzania, United Republic of, Uganda, Zambia, and Zimbabwe

Conservation status

Hymenodictyon parvifolium threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:753565-1
WFO ID wfo-0000216109
COL ID 3NJQ2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hymenodictyon parvifolium

Lower taxons

Hymenodictyon parvifolium subsp. parvifolium Hymenodictyon parvifolium subsp. scabrum