Euclea undulata Thunb.

Species

Angiosperms > Ericales > Ebenaceae > Euclea

Characteristics

Erect dense twiggy evergreen shrubs, 0.75-5 m high or trees up to 7 m high with a densely branched canopy, stems or trunks 2-15 cm in diam., bark grey, scaly; branchlets much divided, densely covered with leaves, glabrous except for rust-coloured glands which often cover the young parts giving the surface a rust-brown granular appearance. Leaves subopposite, alternate or in pseudo-whorls at ends of the branches, coriaceous (in texture often resembling old leather), shortly petioled, pale to dark green, paler and often rust-brown below when young, quite glabrous but sparsely to densely covered with rust-coloured glands which give the surface a granular appearance, obovate, oblanceolate, narrowly-elliptic or narrowly oblanceolate; base cuneate; apex obtuse, subobtuse or abruptly narrowed to a rounded tip; nervation indistinct on both surfaces or raised on upper surface, usually not raised on lower surface; margin entire, not revolute, very strongly undulate to practically flat; petioles 1-3 mm long. Inflorescence 5-20 mm long, axillary, glabrous except for rust-coloured, often stalked glands, 5-7-flowered; bracts lanceolate, boat-shaped, glandular. Flowers dioecious, white, greenish-white or cream, fragrant, mostly tetramerous. Male flowers somewhat larger than the females, 3-3.5 mm long. Calyx shallowly saucer-shaped, shallowly 4-(5-6-)lobed, glandular on the outside, 1/4or less of the length of the corolla. Corolla cup-shaped to widely bell-shaped, glabrous or with a few hairs on the lobes; tube cleft halfway or more; lobes 4(5-6), ovate. Stamens 12-20, in 2 rows, often in pairs together; filaments glabrous; anthers lanceolate to oblong-lanceolate, hairy at the apex. Ovary rudimentary, situated on a fringed disc, occasionally with 2 glabrous styles and then densely covered with whitish glands. Female flowers smaller than the males, 2-2.5 mm long. Calyx saucer-shaped 4-(5-6-)lobed on the rim, glandular outside. Corolla usually campanulate, tube cleft halfway down or more, lobes 4(5-6) usually contorted, as long as or longer than the tube, usually glabrous, occasionally with a few appressed bristles. Staminodes present or absent, star-shaped, hairy upwards. Ovary depressed ovoid, situated on a fringed disc, usually densely covered with white or grey scale-like glands, usually 2-celled due to incomplete septation of two cells with septa present only in the form of a ridge (4-6-celled ovaries also found with the cells complete and a single pendulous ovule in each); styles usually 2, stout, joined at the base, glabrous; stigma obliquely crescent-shaped. Fruit a globose, fleshy berry, 4-6 mm in diam., one-seeded, red, turning purple or black when ripe. Seeds globose, 3-4 mm in diam., divided into three parts by two thin curved lines and a groove; endosperm flinty, pale grey.
More
A dense, twiggy evergreen shrub or small tree up to 7 m in height. Bark: grey, scaly, longitudinally fissured or cracked; branchlets twiggy, angular and densely leafy; all young parts covered with a granular rust-coloured exudate. Leaves: opposite to sub-opposite or in whorls of 3-4, mostly towards the ends of the branchlets, small, obovate to narrowly elliptic, 2-4 x 0, 5-1, 5 cm, stiff, leathery, dark green or blue-green above, paler below, sometimes rusty brown, with a granular exudate; apex broadly tapering or rounded to abruptly attenuate; base tapering; margin entire, finely rolled under, conspicuously wavy or almost flat; petiole 1-3 mm long. Flowers: small, whitish, in unbranched 5-to 7-flowered spikes up to 2 cm long, hairless but with rust-coloured stalked glands, solitary in the leaf axils; bracts boat-shaped, glandular; ovary hairless but with whitish scale-like glands (Dec.-Apr.). Fruit: round, 4-7 mm in diameter, thinly fleshy, reddish brown becoming black, in very short sprays less than 1.2 cm long (Feb.-Oct.).
Evergreen tree or shrub, 0.5-7.0 m high; bark grey, scaly; branchlets densely leafy; young parts covered with rust-coloured glands. Leaves opposite to subopposite or pseudo-whorls of 3 or 4, petiolate, obovate to elliptic, dark green above, sparingly to densely covered with rust-coloured glands below, margins entire, undulate to flat. Inflorescence axillary, 5-20 mm long, glands stalked and rust-coloured; 5-7-flowered. Flowers small, whitish, fragrant. Flowering time Nov.-May. Fruit a berry, globose, fleshy, red turning purple or black. Seeds 3-4 mm in diam.
Evergreen shrub or tree, 0.75-5.00(-7.00) m high. Branches covered with rust-brown scalelike glands when young. Leaves subopposite or alternate; blade narrowly elliptic, elliptic or narrowly obovate-elliptic, usually 4 x as long as broad. Flowers: in axillary inflorescences, 5-7-flowered, 5-20 mm long; ovary covered with grey scale-like glands; corolla up to 2 mm long, cleft halfway down, white, greenish white or cream-coloured; Dec., Jan. Fruit 4-6 mm in diameter, red turning purple or black when ripe.
A small tree. The crown is round. They can be 6 m tall. There are many branches. The leaves are simple and small. They are 1.3-4 cm long by 6-15 mm wide. They are often clustered near the ends of branches. The flowers are small and white or yellow. They have a smell. Flowers occur in clusters in the axils of leaves. Trees are separately male and female. The fruit are small berries which turn red then black. They have one seed. The fruit are edible.
Leaves usually opposite or subopposite; petiole up to 0·3 cm. long; lamina up to 4 cm. long and 1·5 cm. broad, mostly obovate, oblanceolate or oblanceolate–elliptic, apex obtuse to broadly rounded, base cuneate, but not concave, margin often strongly undulate; lower surface glabrous except for peltate scales; lateral nerves and veins almost invisible.
Evergreen, dioecious shrub or tree, up to 7 m tall, rusty granular on young parts. Leaves oblanceolate, firm, often dark green above, paler beneath, usually undulate. Flowers in axillary racemes, small, glabrescent, deeply cleft, cream-coloured, fragrant, ovary scaly. Fruit globose, ± fleshy.
Evergreen shrub or tree, 0.75-5.00 m or up to 7 m high. Leaves, twigs and corolla as in var. undulata, but leaves narrowly elliptic, elliptic or oblanceolate-elliptic, tapering ± equally to apex and base. Flowers white, greenish white or cream.
Dioecious shrub or tree to 7 m, rusty granular on young parts. Leaves oblanceolate, rusty granular, leathery, often undulate. Flowers in rusty granular, axillary racemes, glabrescent, deeply cleft, cream-coloured, fragrant, ovary scaly.
Distinguished from var. undulata by the narrowly-elliptic, elliptic or oblanceolate elliptic leaves which taper more or less equally to apex and base and are at least 4 times, as long as broad.
Corolla deeply lobed, widely open at the throat, each lobe with 0–20 (28) strigulose hairs.
Calyx patelliform, denticulate, glabrous except for peltate scales.
Inflorescence solitary in leaf–axils, unbranched, c. 1 cm. long.
Ovary covered with whitish scales, otherwise glabrous.
Young shoots glabrous except for rusty peltate scales.
Evergreen shrub or small tree up to 6 m. tall.
Stamens c. 16, glabrous or strigulose.
Pistillode with 2 simple stylodes.
Female flowers without staminodes.
Male flowers c. 0·3 cm. long.
Fruit c. 0·7 cm. diameter.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 6.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

A tropical plant. It grows on open rocky slopes. It can grow in arid places. It suits hardiness zones 8-10.
More
Bushland and scrub woodland, from near sea level to elevations of 1,200 metres.
Light -
Soil humidity 6-8
Soil texture 5-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-11

Usage

The fruit are eaten. They are also bruised and fermented to make vinegar.
Uses animal food bee plant environmental use food fuel gene source invertebrate food material medicinal wood
Edible fruits seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Euclea undulata habit picture by Maarten Vanhove (cc-by-sa)

Distribution

Euclea undulata world distribution map, present in Botswana, Cabo Verde, Mozambique, Namibia, eSwatini, South Africa, and Zimbabwe

Conservation status

Euclea undulata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:323344-1
WFO ID wfo-0000681136
COL ID 3BTVT
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Euclea undulata Euclea humilis Euclea myrtina Euclea undulata var. myrtina Euclea undulata var. undulata