Osteospermum potbergense A.R.Wood & B.Nord.

Species

Angiosperms > Asterales > Asteraceae > Osteospermum

Characteristics

Prostrate or procumbent shrublets 0.1-0.2 m high, sparsely branched, but usually many-stemmed and often resprouting (coppicing) from the woody subterranean caudex (especially after fires), shortly white-araneose-tomentose on young vegetative parts but soon glabrescent. Stems and branches somewhat striate-ribbed. Leaves alternate, erecto-patent, petiolate, petiole 0.5-1.5 cm long; lamina spathulate or oblanceolate to elliptic-obovate and tapering to the petiole, coriaceous, bright green, midrib prominent, glabrous (except when young), margins markedly cartilaginous and slightly revolute, somewhat reddish, sparsely coarsely dentate in the distal half or subentire (1-4 obtuse-apiculate teeth on each side), apex subobtuse to acute and mucronulate, 3.5 cm long, 1-2 cm wide. Capitula heterogamous, radiate, solitary on short bracteate loosely white-tomentose peduncles barely overtopping the leaves; peduncles 1.5-3 cm long, bracts 4-7, linear-lanceolate, c. 5 mm long, acuminate. Involucre campanulate, c. 1-1.2 cm x 0.7-0.8 cm, involucral bracts c. 22-30, imbricate in c. 3 series, white-tomentose especially in the distal half, oblong-lanceolate, acuminate, 7-10 mm x 2-3 mm, outer somewhat shorter (6 mm x 1.5-2 mm), with narrow membranous-scarious fimbriate margins, receptacle flat or somewhat convex, naked, minutely alveolate. Ray florets female, (12-)13, pappus absent; tube sparsely to rather densely villous with biseriate multicellular hairs, 1-2 mm long; limb narrowly elliptic-oblong to oblanceolate, 12-18 mm x 3.5-5 mm, 4-veined, apically 3(-4)-fid, yellow with red-tinged reverse; style branches linear, obtuse, with marginal stigmatic areas; ovary somewhat compressed-triquetrous with flat or slightly convex abaxial side and ridged abaxial side, smooth, glabrous; cypsela oblong-ellipsoid, terete or slightly triquetrous, 6-7 mm long, 3.5 mm wide, basally somewhat constricted to a short truncate carpopodium, with a thin transparent deciduous epidermis over a fleshy whitish layer, soon drying out and becoming transversely wrinkled; seed surface becoming dry, black or brownish, longitudinally ridged with 3-5 low complete ribs and a few incomplete parallel ribs in between. Disc florets numerous, pappus absent; corolla tubular below, widening upwards to a narrowly campanulate limb, proximally villous up to the lobes with biseriate hairs, 4.5-5.5 mm long; lobes 5, narrowly ovate-triangular, 1-1.2 mm long, with marginal veins joining at sinuses and continuing down the corolla; anthers 2.5 mm long incl. appendage, caudate with tails equalling the filament collar in length; apical appendage narrowly ovate-triangular, acute, midlined; style terete on a short stylopodium, apically shortly bilobed with deltoid short-acuminate lobes with acute papillae outside; ovary glabrous, smooth, somewhat compressed, 2-veined.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.2
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 3-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

Mode -
Germination duration (days) 10 - 15
Germination temperacture (C°) 15 - 18
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Osteospermum potbergense world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:60433024-2
WFO ID wfo-0000138496
COL ID 75CZC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Osteospermum potbergense