Aloe ferox Mill.

Cape aloe (en), Aloès du cap (fr), Aloès du Cap (fr), Aloès féroce (fr), Aloès amer (fr)

Species

Angiosperms > Asparagales > Asphodelaceae > Aloe

Characteristics

Stem simple, usually 2-3 met. high, sometimes 4-5 met., densely covered with the persistent remains of old dry leaves. Leaves 50-60 in a dense capitate rosette, lanceolate-ensiform, up to 1 met. long, 15 cm broad at base, rather fleshy, dull green, sometimes with a reddish tinge; upper surface flat low down, slightly canaliculate upwards, varying from smooth to spiny, the spines few to many, irregularly scattered; lower surface convex, varying from smooth (except for a few spines in median line near apex), to copiously spiny throughout; margins sinuate-dentate, armed with stout deltoid reddish to brownish-red teeth about 6 mm long, 10-20 mm distant, the interspaces rounded. Inflorescence one only, a branched panicle with 5-8 erect racemes. Racemes erect, mostly unicoloured reddish, sometimes orange, cylindric slightly acuminate, very densely multi-flowered, 50-80 cm, long, 9-12 cm diam. at base, about 6 cm diam. at apex, the buds horizontally disposed and slightly laxer than the open flowers, the flowers first opening up the side (north) facing the sun. Pedicels green, 4-5 mm long. Bracts ovate-acute, 8-10 mm long, 3-5 mm broad, thin scarious brownish, 3-5-nerved. Perianth scarlet, sometimes orange, clavate-cylindric, slightly ventricose, averaging 33 mm, in length; outer segments free for about two-thirds their length, obscurely 3-5-nerved, the nerves reddish-orange, the apices sub-acute, spreading; inner segments free, but dorsally adnate to the outer for one-third their length, with thin whitish margins, carinate with 3 congested nerves, the middle nerve usually more raised than the other two and the colour of the perianth, turning green at apex, the apices spreading to revolute, light to deep brown tipped. Filaments flattened, the 3 inner narrower and lengthening in advance of the 3 outer, the included part lemon the exserted part (20 mm) orange to brownish-orange, eventually turning deep brown to black. Anthers the 3 inner and 3 outer in turn exserted 20-25 mm Stigma exserted 20-25 mm, with the exserted portion of the style slightly lighter in colour than the filaments. Ovary 6-7 mm long, 4 mm diam., finely 6-grooved, green. Flowering period ranges from May and June along the warmer coastal belt, July and August further inland (Cradock, Queenstown), September and October near Tarkastad, and as late as November along the Orange River from Aliwal North to Southern Basutoland.
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Trees; stems simple, 2-4(-5) m tall. Leaves 50-60, arcuate-erect to spreading, 500-1000 x 65-150 mm, shallowly channelled, dull green to glaucous, sometimes reddish tinged, both surfaces with or without prickles. Inflorescence of cylindric or narrowly conical, very dense racemes, 5-12-branched, ±1 m tall; bracts ovate-acute, 7-11 x 3-6 mm, 3-many-nerved. Flowers scarlet to orange, very rarely yellow or white, 23-35 mm long; subclavate to ventricose; outer segments connate in lower third, inner segments free but dorsally adnate to outer in lower third; pedicels 3-8 mm long. Anthers exserted 9-25 mm. Ovary 5-7 x 2-4 mm, green; style exserted 12-25 mm. Fruit 20-23 x 10-12 mm, yellowish grey-brown. Seeds almost black, ±5.0 x 3.0 x 0.6 mm, broadly winged. Flowering time (May to) June to August (to November), depending on locality and minimum winter temperatures.
It can be a tall succulent plant. It can grow from 2-5 m tall. It normally has a single stem with the remains of the old dry leaves on it. The crown has the fleshy sword shaped leaves. These leaves are 15 cm wide at the base and taper to the tip. They are green but often tinged with red. They vary between being smooth to being very spiny. The edges have reddish teeth. Only one flower stalk develops. This can branch and have 5-8 erect closely packed flowering branches. These are normally bright red. The flowers are rich in nectar which is edible.
Succulent, perennial tree. Stem 2-3 m high, can be up to 5 m high, unbranched, erect, densely covered with persistent dried leaves. Leaves dull green, sometimes with reddish tinge, without spots, lanceolate-ensiform, up to 1 m long, surfaces smooth or with irregular scattered spines, margins with stout, deltoid, reddish to brownish red teeth. Inflorescence single, branched, erect, ± 1 m high, with cylindric, very dense racemes. Flowers orange, scarlet, yellow or white, ± 33 mm long; stamens and stigma well exserted. Flowering time May-Nov.
Succulent, perennial tree; caulescent. Stems 2-3 m long, simple, erect, densely covered with persistent dried leaves. Leaves with blade narrowly ovate-ensiform, up to 1 m long; margins with stout, deltoid, reddish to brownish red teeth, dull green, sometimes reddish tinged, without spots, with smooth or with irregular scattered spines. Flowers: inflorescence much branched, ± 1 m high, with cylindrical, very dense racemes; floral bracts 8-10 mm long; stamens and stigma well exserted; perianth ± 33 mm long, scarlet to orange; May-Nov.
Succulent, perennial tree. Stem 2-3 m high, can be up to 5 m high, unbranched, erect, densely covered with persistent dried leaves. Leaves dull green, sometimes with reddish tinge, without spots, lanceolate-ensiform, up to 1 m long, surfaces smooth or with irregular scattered spines; margin with stout, deltoid, reddish to brownish red teeth. Racemes cylindric, dense, branched, ± 1 m long. Flowers orange to scarlet, occasionally yellow or white, ± 33 mm long; stamens and stigma well exserted.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination entomogamy
Spread -
Mature width (meter) 1.25 - 1.75
Mature height (meter) 2.0 - 3.0
Root system -
Rooting depth (meter) 1.5
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway cam

Environment

It occurs in hills and open spaces. It grows in areas with a rainfall of 200 mm to 750 mm. The temperatures vary between 46°C and-5°C. It can grow in arid places. In Brisbane Botanical Gardens. It suits hardiness zones 9-11.
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Abundant on arid rocky hillsides up to 1,000 metres altitude. Also found in grassy fynbos and on the edges of the karoo. It grows both in the open and in bushy areas.
Light 6-9
Soil humidity 2-5
Soil texture 6-7
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 9-11

Usage

CAUTION: The nectar when drunk in large quantities can cause paralysis. The nectar is sweet and edible. The fleshy part of the leaves with the skin stripped off is used for jam. It is also used to make drinks.
Uses animal food environmental use fodder food food additive fuel gene source material medicinal non-vertebrate poison poison seasoning social use vertebrate poison
Edible flowers leaves nectars
Therapeutic use Anemia, hemolytic (leaf), Endophthalmitis (leaf), Aperient (unspecified), Tumor (unspecified), Medicine (unspecified), Carcinoma, ehrlich tumor (unspecified), Narcotics (unspecified), Sarcoma (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

It is grown from offsets near the base of the plant. It can be grown from seeds.
Mode seedlings
Germination duration (days) 30 - 180
Germination temperacture (C°) 21
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) 18 - 26
Size -
Vigor -
Productivity -

Images

Habit

Aloe ferox habit picture by Daniel Barthelemy (cc-by-nc)

Leaf

Aloe ferox leaf picture by Maarten Vanhove (cc-by-sa)
Aloe ferox leaf picture by Maarten Vanhove (cc-by-sa)

Distribution

Aloe ferox world distribution map, present in Spain, France, Lesotho, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:529449-1
WFO ID wfo-0000758186
COL ID 5TWF2
BDTFX ID 3346
INPN ID 81593
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Pachidendron pseudoferox Aloe ferox Aloe galpinii Aloe horrida Aloe x pallancae Aloe subferox Aloe supralaevis Aloe pseudoferox Busipho ferox Pachidendron ferox Pachidendron supralaeve Aloe ferox var. galpinii Aloe ferox var. incurvata Aloe ferox var. subferox Aloe perfoliata var. ferox Aloe supralaevis var. erythrocarpa