Ipomoea oenotherae Hallier F.

Species

Angiosperms > Solanales > Convolvulaceae > Ipomoea

Characteristics

Perennial with a fusiform rootstock up to ±300 mm long, producing an annual rosette of leaves. Stems unbranched, many, prostrate or ascending, up to 400 mm long, thick, angular, older parts glabrescent, younger parts silvery white-pubescent. Radical leaves entire, linear to lanceolate, 40-100 mm long, or with 1-7 lateral teeth or lobes, terminal lobe distinctly longer than the others; petiole up to 70 mm long. Cauline leaves 20-60 mm, entire or 3-7-lobed, base cuneate, lobes linear to lanceolate, entire to somewhat repand, hairy, soon glabrescent, middle lobe the longest, main nerves prominent below; petiole 5-10 mm long. Flowers axillary, solitary, subsessile, or pedicel 5-15 mm long; bracteoles 4 linear, pubescent, 10-15 mm long. Calyx often rose-red, 12-15 mm long; sepals unequal, ovate to ovate-lanceolate, aristate, cili-ate with median keel of hairs, broader and brown in fruit. Corolla narrowly funnel-shaped with spreading limb, 30-50 mm long, deep pink to magenta, glabrous. Capsule globose, glabrous, straw-coloured, 8-10 mm in diameter. Seeds 3-4 mm long, densely pubescent, often pinkish grey.
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Perennial; stems numerous from a fusiform tuberous rootstock, slender, 9–30 cm. long, prostrate or ascending, densely white-pilose above, glabrescent beneath.. Leaves very variable; radical ones largest; blades up to 8 cm. long and 1–4 cm. wide, 2–5(–9)-lobed or rarely entire or undulate, with lanceolate or oblong sparsely pilose lobes, the apical lobe the largest; upper cauline leaves smaller, subpalmately or pinnately 3–5-lobed, with linear to lanceolate lobes, the middle lobes usually longest and often lobed or toothed.. Flowers axillary, solitary, subsessile, or pedicel up to 12 mm. long.. Calyx densely long-pilose, 1.2 cm. long, very similar to that of the last 2 species.. Corolla mauve and white, tubular below; limb ± salver-shaped, l.4–3.2(–4) cm. long.. Capsule globose, 6 mm. in diameter.. Seeds as in species 4, I. polymorpha.
Perennial herb; producing a rosette of leaves. Stems procumbent or ascending. Leaves with blade linear (radical leaves) to subpalmately or pinnately 3-7-lobed (cauline leaves) with linear to narrowly ovate lobes, middle ones longest and often lobed or dentate at first, 40100 mm long, with soft, silvery white hairs, main veins prominent below. Flowers: solitary, axillary, subsessile or pedicel 5-15 mm long; calyx lobes ovate or narrowly ovate, aristate, ciliate with median keel of hairs; corolla up to 50 mm long, mauve to purple; Nov.-Mar. Fruit a globose, glabrous capsule, 8-10 mm in diameter; seeds densely pubescent.
Leaves very variable, the basal ones rosulate, (if present) long petiolate with a petiole up to 5 cm. long); leaf lamina lanceolate or linear, up to 8 × 1 cm., entire or with 1–2 lateral teeth or lobes or repando-pinnatisect 2–7–lobed, pilose, the apical lobe usually longer; cauline leaves 2–6·5 cm. long, usually subpalmately or pinnately 3–7–lobed, with linear to lanceolate lobes, the middle ones usually longest and often lobed or dentate at first with soft silvery-white hairs, soon glabrescent, main nerves prominent beneath.
A small spreading herb. It grows 15 cm high. It has a small carrot like tuber. This is 8 cm long by 2 cm wide. There are several stems from the top of the tuber. These are weak and thin and usually lie along the ground. The young early leaves point upwards and have a few lobes along the side. They can be 6 cm long by 1 cm wide. Older leaves are smaller and have deep lobes. The flowers are purple or pink. They open in the morning. The fruit are small, round capsules. The seeds are light brown and only a few occur.
Prostrate or ascending perennial herb. Leaves subpal-mately or pinnately 3-7-lobed with linear to lanceolate Lobes, middle ones longest and often lobed or dentate at first, with soft silvery white hairs, glabrescent. Sepals ovate or ovate-lanceolate, aristate, ciliate with median keel of hairs. Corolla up to 50 mm long. Flowers mauve to purple.
Erect perennial shrub, 0.3-1.0 m high, covered with short silvery adpressed pubescence. Leaves entire, linear to oblanceolate or lanceolate, base decurrent into short petiole, apex acute or obtuse, mucronate. Sepals lanceolate, acute or subacute. Corolla 35-70 mm long, funnel shaped. Flowers bright magenta or magenta-pink.
Sepals unequal ovate or ovate-lanceolate, aristate, ciliate with median keel of hairs, outer ones herbaceous, up to 13 mm. long, inner ones paler, more membranous and shorter, all becoming broader and brown in fruit.
Flowers axillary, solitary, subsessile or with a pedicel up to 15 mm. long; bracteoles linear-subulate or linear-filiform, 10–15 × 0·5 mm., pubescent.
Stems numerous, slender, up to 50 cm. long, prostrate or ascending, densely white-pilose above, glabrescent beneath.
Corolla narrowly funnel-shaped with spreading limb, mauve to purple, 2·3–5 cm. long, midpetaline areas glabrous.
Perennial, with a fusiform tuberous rootstock.
Capsule globose, glabrous, straw-coloured.
Seeds densely appressed pubescent.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.23 - 0.58
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Flower color
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Nitrogen fixer -
Photosynthetic pathway -

Environment

A tropical plant. In Kenya it grows between 1,000-2,400 m altitude. In Zimbabwe it grows between 1,000-1,580 m above sea level. It is in open grassland on well-drained soils that are rather damp. It grows in areas with a rainfall between 650-1,200 mm per year. It can grow in arid places.
Light -
Soil humidity -
Soil texture 5-7
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

The tuberous root is eaten. It is peeled and eaten raw.
Uses food
Edible roots tubers
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown by seeds or tubers. Seeds are planted shallowly and germinate in a few days.
Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
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Images

Ipomoea oenotherae unspecified picture

Distribution

Ipomoea oenotherae world distribution map, present in Botswana, Eritrea, Ethiopia, Kenya, Malawi, Namibia, Somalia, Tanzania, United Republic of, Uganda, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:269417-1
WFO ID wfo-0001297751
COL ID 3PWM4
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Convolvulus oenotheme Ipomoea oenotherae Convolvulus oenotherae Ipomoea lineariloba Ipomoea cecilae var. anomophylla Ipomoea cecilae var. quinquesecta

Lower taxons

Ipomoea oenotherae var. angustifolia Ipomoea oenotherae var. oenotherae