Acmadenia obtusata Bartl. & H.L.Wendl.

Species

Angiosperms > Sapindales > Rutaceae > Acmadenia

Characteristics

Shrubs 0.2 m tall, grazed down, dense, flowering stems ascending, single-stemmed at base. Branches at first erect becoming somewhat decumbent, fairly slender, tough, short, glabrescent, variously bent; bark greyish-brown, knotty with leaf scars. Branchlets numerous, slender, erect, puberulous, some elongated, others very short, densely clothed with leaves, Leaves 10-11 mm long, 1.3-1.7 mm broad, linear-lanceolate, acute, mucronate, very short adpressed petiolate, glabrous, erect, closely imbricate or adpressed, opposite and decussate or alternate; hyaline margins narrow, scabrid-serrulate; midrib prominent, sub-scabrid towards the apex, gland-dotted to either side. Inflorescence solitary, terminal on numerous short branchlets often crowded towards the summits of erect stems; petals spreading 10 mm diam., bright pink. Bract 3.5 mm long, 1.5 mm broad, oblong, acute, apiculate, glabrous, ciliate, broadly translucent, gland-dotted and coloured towards the apex; midrib prominent. Bracteoles two, 4 mm long, 1.8-1.9 mm broad, oblong, apiculate, glabrous, crisped ciliate, very broadly translucent; midrib towards the apex prominent, gland-dotted and coloured. Calyx lobes five, 5 mm long, 2.5 mm broad, oblong, obtuse, apiculate, glabrous, crisped ciliate; margins broadly translucent; midrib coloured, tri-nerved, with 2 rows of gland dots. Petals five, 9 mm long overall; limb 4-4.3 mm broad, orbicular, apiculate with a few gland dots, pink, spreading-recurved; claw 4 mm long, 1.5 mm broad, narrowing the base, pubescent to either side of the midrib at the throat, sparsely ciliate above. Staminodes five, 0.5 mm long, somewhat fusiform, glabrous. Filaments five, becoming 2 mm long, stout, acicular, erect, glabrous. Anthers five, 2 mm long overall, 0.8 mm broad, orange-yellow; apical gland 0.4 mm long, somewhat fusiform. Pollen 42 µ long, 31 µ broad, ellipsoid. Disc obvallate, exceeds the ovary, surrounds the stigma at first, dark green, exudes nectar. Stigma 0.8 mm diam., capitate, globose. Style becoming 1.5 mm long, glabrous, erect. Ovary 5-carpellate, 1 mm long, 1 mm diam., virtually glabrous; apices emarginate. Fruit 5-carpellate, remaining partly concealed behind the persistent calyx lobes, 4 mm long, 4 mm diam., glabrous, smooth, gland-dotted, sparsely setulose on the margins above; horns 0.7 mm long, emarginate. Seed 3.3 mm long, 1.3 mm broad, black, shining; aril black on one side.
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Dwarf shrub, single-stemmed at base, up to 500 mm high. Leaves opposite or alternate, simple, linear-lanceolate, acute, mucronate, shortly petiolate, glabrous. Flowers solitary, terminal, crowded on many short branchlets; 10 mm in diam., bright pink. Calyx deeply divided; lobes 5, persistent. Petals 5, clawed, pubescent at throat, bent inward at throat. Stamens 5; anthers not protruding; apical gland 4 mm long; staminodes 5, 0.5 mm long, glabrous, somewhat fusiform. Disc cupular, exceeding ovary, surrounding stigma at first. Ovary 5-carpellate, ± 1 mm in diam.; apices emarginate; style short, glabrous, erect, stigma capitate. Flowering time mainly Sept.-Nov. Fruit 5-carpellate, remaining concealed behind persistent calyx lobes, with horns 0.7 mm long. Seeds black, shining.
Closely leafy, single-stemmed, aromatic shrublet to 30 cm. Leaves sometimes opposite, adpressed, imbricate, linear-lanceolate, erect, margins narrow, scabrid-serrulate. Flowers solitary, terminal, often crowded on short branchlets near stem apices, bright pink.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.35
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 3-5
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
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 -

Distribution

Acmadenia obtusata world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:770631-1
WFO ID wfo-0000516757
COL ID 9DC8
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Diosma ulicina Acmadenia obtusata Acmadenia uniflora Euchaetis uniflora Acmadenia juniperina Diosma juniperina Diosma muraltioides Diosma obtusata Diosma obtusata Macrostylis patersoniae Acmadenia muraltioides Acmadenia pungens