Plants photographed elsewhere in Namibia (not on Kyffhäuser)
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Convolvulus argillicola Pilg.


Convolvulus argillicola

Leaves



Family: Convolvulaceae
Full name: Convolvulus argillicola Pilg.
Location: M47 (north of Klein Aub) (2316DC)
ID status: Fairly certain
Afrikaans common name(s): -
English common name(s): Bindweed
Synonym(s): -
Status: Native
Description: Stems several from perennial taproot, suffruticose at base, prostrate, like young parts, leaves, petioles and calyx densely covered with stiff rust-brown or whitish hairs, ultimately glabrescent, rather firm and stout, terete and longitudinally striate, up to 700 mm long. Leaves ovate or oblong in outline, obtuse or acute, 20-50 x 10-30 mm, usually with minute apical mucro, truncate to broadly and shallowly cordate at base with blade almost cuneately decurrent on petiole, irregularly crenate or pinnatilobed to pinnatisect; lobes usually obtuse, often again crenate to somewhat lobed; petiole slender, 5-30 mm long. Flowers solitary or few together in leaf axils, nearly sessile; bracts subulate or lanceolate-subulate, 7-10 mm long, hairy. Sepals unequal, outer ones herbaceous, long-acuminate from an ovate base, 12-13 mm long, acute, hirsute, two inner ones shorter and narrower, indurate, caudate-acuminate, 10 mm long, glabrous except for hirsute tips. Corolla white, almost as long as calyx, widely funnel-shaped to rotate, with a few stiff hairs towards tips of lobes on midpetaline areas. Ovary glabrous. Capsule subglobose, 9 mm wide. Seeds glabrous, verruculose or rugose, black, 5-6 mm long. Flowering time throughout the year. (from JSTOR Global Plants website / Flora of Southern Africa)

Densely hispid-pilose perennial with prostrate/trailing stems from a central taproot to 70 cm; hairs rusty-brown in colour. Leaves petiolate, 1–3.5 (-5) × 0.5–2.5 cm, ovate in outline, deeply pinnatisect, abruptly narrowed and cuneate onto the petiole; petioles 1–8 mm. Flowers 1–2, axillary, subsessile; peduncles to c. 0.3 cm; pedicels 0; bracts filiform, 5–9 × 0.5 mm; outer sepals broadly ovate with a long caudate apex, c. 7–8 mm at anthesis, accrescent to 12–13 mm, becoming somewhat scarious, the margin crisped; corolla 10–12 mm long, deeply lobed for c. 4 mm, nearly concealed by calyx, white with pilose midpetaline bands; ovary glabrous, divided c. 4 mm above base; stigmas 2 mm, linear. Capsule glabrous; seeds glabrous, rugose. (from A foundation monograph of Convolvulus L. (Convolvulaceae), Wood et. al., 2015)

Very distinct because of the subsessile flowers and accrescent calyx, which almost conceals the corolla. (from A foundation monograph of Convolvulus L. (Convolvulaceae), Wood et. al., 2015)
Link(s) African Plant Database
JSTOR Plant Science
Kew Herbarium Catalogue
BGBM Berlin-Dahlem - Virtual Herbarium
Züricher Herbarien
iNaturalist (Namibia / Alex Dreyer)
iNaturalist (Namibia)
iNaturalist (southern Africa)
Flora of Zimbabwe
Fleurs de notre Terre - Galerie Namibie
Tree Atlas of Namibia
Photographer: AA Dreyer
Date of photograph: 07 Apr 2015
Camera make: PENTAX
Camera model: PENTAX K-x
Lens aperture: f/7.1
Shutter speed: 1/500 s
ISO speed: 100
Content last updated: 18 Apr 2024


Note: The identification of some of the plants on this website is not 100% certain. Any comments will be highly appreciated. I would also be willing to supply higher resolution images upon request. Please contact me at the e-mail address given below.

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