Diosma strumosa I.Williams

Species

Angiosperms > Sapindales > Rutaceae > Diosma

Characteristics

Shrubs 0.8-1.2 m tall, erect, arising from a single stem at ground level. Branches erect, rigid, glabrous, few in number; bark smooth, greyish-brown. Branchlets erect, minutely puberulous, fairly slender, not very numerous, short due to grazing by animals. Leaves 2.6-6.2 mm long, 1.1-2 mm broad, lanceolate, obtuse, fairly erect, sessile, alternate, minutely puberulous on all sides, indistinctly gland-dotted along either side of the midrib and along the margins, turgid on the inside when fresh. Inflorescence terminal, solitary or with a second flower closely adjacent; flower 8-10 mm diam., with white petals spreading from the wine-coloured disc; calyx puberulous, sessile. Bract 1.3 mm long, 1.1-1.2 mm broad, ovate, obtuse, puberulous on all sides; margins ciliolate, narrowly translucent below; apex thickened. Bracteoles two, 1.3 mm long, 1 mm broad, sub-ovate, obtuse, puberulous on all sides; margins ciliolate, broadly translucent below. Calyx lobes five, 1.9-2 mm long, 1.4-1.5 mm broad, deltoid, obtuse, rather whitish, puberulous on both surfaces; margins ciliolate, broadly translucent below; apex thickened, elevated, green. Petals five, 4.1-5 mm long, 2.1-2.2 mm broad, lanceolate, acute, sessile, often persisting; margins sparsely ciliolate in the lower third; apex thickened, puberulous outside. Staminodes five, 0.1 mm diam., globose, wine-coloured, vestigial, situated towards the outer margin of the disc on the elevated segments of the disc. Filaments five, 2.1 mm long, acicular, pinkish, clothed with a few minute hairs, spreading widely after anthesis. Anthers 1 mm long, 0.7 mm broad, wine-coloured; apical gland semi-immersed, dark wine-coloured. Pollen 51 µ long, 24 µ broad, oblong. Disc sinuate-crenulate, fleshy, wine-coloured, spreading wide open, exceeds the ovary by a long way. Stigma 0.3 mm diam., capitellate, reddened. Style at first deflexed, becoming 1.7 mm long, erect, pinkish, persisting, clothed with a few minute hairs in the lower half. Ovary 5-carpellate, 0.6 mm long, 0.8 mm diam., glabrous, truncate. Fruit 5-carpellate, 7 mm long, 8 mm across the tips of the horns, sessile; carpels minutely puberulous, lumpy with gland dots in deep pits; horns 2 mm long, spreading 45°, with an immersed apical gland. Seed 3.8-4 mm long, 1.8-2 mm broad, black, shining; aril with narrow black stripes.
More
Like D. passerinoides but style and filaments sparsely pubescent, anthers purple and fruits rough and pitted.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.8 - 1.2
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 -
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Hardiness (USDA) -

Usage

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

Cultivation

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

Distribution

Diosma strumosa world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:772583-1
WFO ID wfo-0000648412
COL ID 36DNL
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Diosma strumosa