Gomphocarpus cancellatus (Burm.F.) Bruyns

Species

Angiosperms > Gentianales > Apocynaceae > Gomphocarpus

Characteristics

Shrubby herb to c.1.2 m tall, rootstock fibrous (in cultivation), but perhaps with a stout taproot in nature; stems robust, erect, much branched at base and above, densely covered in short spreading hairs. Leaves paired, coarse and slightly fleshy; sessile or with petiole to 2 mm; lamina 2-5 x 1-2.5 cm, ovate, oblong or suborbicular, apex acute, rounded or obtuse, usually with a short apiculus, base generally truncate or weakly cordate, but occasionally rounded to subcuneate, margins smooth and minutely pubescent, upper and lower surfaces glabrous to densely pubescent. Inflorescences extra-axillary with 10-20 flowers in a nodding umbel, flowers sometimes grouped into 2 or 3 fascicles; peduncles 0.5-1.5(-2) cm long, stout, densely pubescent; bracts linear to filiform, densely pubescent, deciduous; pedicels (1-)2-2.5 cm long, slender, densely pubescent with long white hairs. Sepals 3-4 x 1.5-2.5 mm, ovate to triangular, acute, densely pubescent. Corolla reflexed, exposed (adaxial) face greyish white to cream or yellow, glabrous or minutely papillose, abaxial face frequently tinged with pink, pubescent with long white hairs; corolla lobes 5-7 x 3-4 mm, ovate, subacute. Corona attached ± at the base of staminal column, clearly connate below and with minute interstaminal lobules at the base of the anther wings, staminal lobes cucullate, not compressed laterally, 2-3 x 1-2 mm, ± as tall as column, the upper margin entire and level or sloping gently upwards from the column, rounded distally, lacking any form of tooth within the cavity, white. Anther wings 1.2-1.5 mm long, broadly triangular. Corpusculum c.0.4 x 0.15 mm, ovoid-subcylindrical, brown; translator arms c.0.3 mm long, flattened, weakly geniculate; pollinia c.0.9 x 0.5 mm, flattened, oblong-semicircular in outline. Stigma head flat. Fruiting pedicel contorted to hold follicle ± upright; follicles (3-)4-6 x 2-3 cm, ovoid, tapering gradually into an attenuate beak, densely pubescent at least when young, and with pubescent filiform processes to c.6 mm long. Seeds 4-6 x 3-3.5 mm, flattened on one face, the other convex, ovate, rugose, with a coma of silky hairs 1.5-3 cm long.
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Perennial herb or shrub, 0.7-1.2 m high. Stems erect, stout. Leaves opposite, coriaceous, ovate or oblong, 37-62 x 10-29 mm, base truncate, midrib stout, secondary veins pronounced beneath. Inflorescences extra-axillary, terminally clustered, 15-30-flowered; peduncle 5-17 mm long. Flowers cream-coloured to white. Corolla reflexed; lobes ovate, 5-7 x 3-4 mm. Staminal column inconspicuously stipitate. Corona white tinged purple; lobes saccate, somewhat fleshy, central sinus cavity 2-3 x 1-2 mm, upper proximal end level with style-stigma-head, upper margin truncate. Flowering time Apr.-July? Follicles: stalks twisted, solitary, ± erect, ovoid, slightly inflated, beak short.
Erect, perennial shrub to 1 m tall. Leaves sessile or with petiole to 4 mm long; lamina elliptic or ovate to lanceolate-ovate, to 6 cm long, to 2.8 cm wide, cuneate at base, acute; secondary veins 8–10 each side of midrib; colleters absent. Inflorescence umbelliform or with 1 or 2 fascicles. Flowers 5–6 mm long, 9–11 mm diam.; pedicels 17–20 mm long. Corolla purple; lobes lanceolate-ovate, 5–6 mm long. Staminal corona 3.5–4 mm long; each lobe 2.8–3.2 mm long, 1.8–2 mm wide. Follicles ovoid at maturity, 5–6 cm long, 1.5–2.5 cm wide, acuminate, with sparse, soft teeth 5–6 mm long scattered over surface.
Shrub, up to 1 m tall, stems erect, branching mostly from base, velvety, sap milky. Leaves oblong to elliptic, mostly sessile, 25-50 x 12-30 mm, leathery, nearly glabrous. Flowers 12-30, in extra-axillary umbels, on peduncles 5-20 mm long, pedicels 18-25 mm long. Corolla white, faintly suffused with pink. Corona yellowish white, without a stipe, flat-topped and flush with style head, without a horn in cavity. Fruit ovoid, 40-70 x 18-30 mm, beaked, covered with soft bristles.
Rigid, hairy shrub to 1.5 m; sap milky. Leaves opposite, oblong-lanceolate to elliptic, usually rounded at base, leathery. Flowers cream-coloured. Fruits inflated, ovoid-acute.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0 - 1.2
Root system fibrous-root tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Found on roadsides and rocky hillsides.
Light 7-9
Soil humidity 5-7
Soil texture 5-7
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-10

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°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Gomphocarpus cancellatus unspecified picture

Distribution

Gomphocarpus cancellatus world distribution map, present in Australia and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:988311-1
WFO ID wfo-0000705626
COL ID 3GSR2
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Asclepias arborea Asclepias arborescens Asclepias rotundifolia Gomphocarpus cancellatus Asclepias cancellata Asclepias pubescens Asclepias crassifolia Gomphocarpus arborescens