Acanthopsis disperma Nees

Species

Angiosperms > Lamiales > Acanthaceae > Acanthopsis

Characteristics

Spiny, acaulescent herb up to 100 mm tall. Leaves tufted, arranged in a rosette, obovate to broadly lanceolate (30-)40-60(-150) x 10-20 mm; cotyledons in seedlings reniform (strikingly different from ordinary leaves); leaf margin flat or undulate, spinose, spines fine, up to 2(3) mm long; with appressed, strigose or spreading hairs; apex rounded to acute; base attenuate; petiole 3-10 mm long, usually without prominent tufts of long, silky hairs at the base. Inflorescences 1-5 per plant, 20-60(-100) mm long, (12-)13-15(-20) mm in diameter, persisting after plant has died. Bracts fan-shaped, 15-20 mm long, base 4-5 mm long; middle and upper bracts ending in 5 primary spines, central primary spine always compound (with 2 or 3 pairs of marginal secondary spines), lateral primary spines with 1 or 2 basal and 3-5 marginal secondary spines; spine tips often tinged purple-brown; primary spines usually recurved and secondary spines spreading in fruit; bract base hirsute to pubescent with deflexed to spreading short hairs and some scattered long hairs, with ring of long, silky hairs adaxially at base of spines; spines almost glabrous with margin of rigid, long hairs and sessile/sub-sessile glands, or pubescent to villose (long, silky hairs interspersed with deflexed short hairs and sessile/sub-sessile glands). Bracteoles sickle-shaped, 7-9 mm long, silky hairy. Calyx tips often almost glabrous, with long silky hairs towards base; dorsal sepal ovate, cuspidate, (10-)11(-14) mm long, densely silky hairy, especially adaxially, 7-9-veined from base; ventral sepal ovate, 9-11 mm long, densely silky hairy, especially adaxially, 5-7-veined from base; lateral sepals 7-8 mm long, densely silky hairy on both sides. Flowers blue-purple with white throat; corolla 19-22(-28) x 7-9(-12) mm, tube (5-)6-9(-11) mm long; central lobe longer than wide or equal, slightly constricted at base, truncate to emarginate. Stamens with purple-black anthers, 2 mm long, filaments 4-5 mm long, sparsely glandular, hairy towards base. Style with patch or ring of glandular hairs at base. Capsules ovate in face view, flattened, glabrous, shiny, 5-7 x 3-4 mm, 2-seeded. Seeds (3-)5 x 3 mm, covered with long white hygroscopic hairs.
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Spiny, stemless, perennial herb, up to 100 mm tall. Leaves rosulate, broadly oblanceolate, incised and spinescent, appressed hairy. Flowers among bracts in dense, ± short columnar spikes, blue, occasionally white; bracts tipped with several compound rigid spines, spines softly hairy, reflexing in fruit.
Spiny, acaulescent perennial to 10 cm. Leaves tufted, oblanceolate, incised and spinescent. Flowers in dense spikes among spiny bracts, blue, sometimes white; bracts reflexing in fruit.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses environmental use
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

Acanthopsis disperma world distribution map, present in South Africa

Identifiers

LSID -
WFO ID wfo-0001044645
COL ID -
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Acanthopsis disperma