Aloe aculeata Pole-evans

Aloès (fr)

Species

Angiosperms > Asparagales > Asphodelaceae > Aloe

Characteristics

Plants usually solitary, never in dense groups. Stem none or short, simple, sometimes in very old specimens up to 50-80 cm long, procumbent, never erect. Leaves about 30, densely rosulate, lanceolate-attenuate, up to 60 cm long, 8-12 cm broad at base, arcuate-erectly incurved and forming a compact rosette 50-60 cm diam.; upper surface dull green to glaucous, flat low down, slightly canaliculate towards apex, with several scattered reddish-brown thorns especially in upper half; lower surface convex, copiously aculeate throughout: margins armed with stout pungent deltoid reddish-brown teeth about 5-6 mm long, 10-20 mm distant, the marginal teeth and surface thorns sometimes springing from a tuberculate white base. Inflorescence compactly or divaricately 2-4-branched from low down, about 1 met, high, usually 1 only. Peduncle deep brown, rather sulcate, laterally compressed at base, not sterile bracteate below the first branch but branches below racemes clothed with numerous deltoid-acuminate thin scarious many-nerved sterile bracts about 20 mm long, 10 mm broad. Racemes very densely multiflowered, cylindric slightly acuminate, 40-60 cm long, 7 cm diam., varying from unicoloured yellowish to orange, to somewhat slightly bicoloured with reddish-orange buds and yellow flowers, the buds and open flowers all spreading downwards. Brads deltoid acuminate, brownish, thin, scarious, many-nerved, about 10 mm long, 7 mm broad, severely bent downwards at base. Pedicels 2-3 mm long. Perianth cylindric-ventricose, 25-40 mm long, slightly curved, mostly lemon-yellow; outer segments, free to just beyond the middle (the tube usually about 14 mm), with 3-5 green to orange nerves confluent at apex, the apices brown tipped, sub-acute, slightly spreading; inner segments broader than the outer, with 3 congested nerves forming a keel, the apices more obtuse, more spreading. Filaments brownish-orange, flliform-flattened, the 3 inner narrower and lengthening in advance of the 3 outer. Anthers the 3 inner and 3 outer in turn exserted 15 mm Stigma at length exserted 18 mm. Ovary 6 mm long, 3 mm, diam., green. Capsule oblong, about 18 mm long, 10 mm diam.
More
Stem usually short, sometimes as much as 1 metre in height, unbranched. Leaves numerous, in a dense rosette, erect-incurved, lanceolate-ensiform, distinctly attenuated, terminating in a sharp thorn, 45-60 cm long, and 7.5-11 cm broad at the base, 15-17 mm thick, the margins beset with conical reddish-brown thorns 5-6 mm long and 10-20 mm apart, somewhat concave above, channelled towards the apex and with a few similar thorns especially in the median line, convex below and more thickly studded with thorns. Peduncle stout, simple or branched, laterally compressed, clothed with numerous broad deltoid bracts, usually 2-5 branches, arcuate-erect; racemes 30-60 cm long and about 7 cm broad, clothed at the base with dry empty scariose bracts, dense, many-flowered, upper part of raceme with unopened buds bright orange-scarlet; bracts maroon-claret brown (R.C.S.), deltoid-acute 11 mm long, and 7-8 mm broad; pedicels 3 mm long. Perianth 34-38 mm long, cylindrical-ventricose, lemon-yellow (R.C.S.); outer segments united for 14-16 mm from the base, linear-lanceolate, with 3 green or orange veins and tipped with brown, inner segments lighter in colour, more obtuse with chestnut-brown tips. Stamens and style protruding 15-17 mm beyond the perianth, filaments stout, coloured auburn (R.C.S.); anthers bright orange chrome (R.C.S.), dark brown at the back, style lemon-yellow. Capsule cylindrical trigonous, 14-18 mm long and 8-10 mm diam., greyish; seeds triquetrous, narrowly winged dark, 4 mm long.
Plants stemless, 300-600 mm tall excluding inflorescence, solitary. Leaves ±30, 250-600 x 50-120 mm, shallowly channelled, grass-green to glaucous, upper surface with few prickles, lower surface with many prickles, these on both surfaces scattered, dark brown, arising from white tubercles. Inflorescence of erect, cylindric, very dense racemes, 2-4-branched, ±1 m tall; bracts ovate-acuminate, 6-10 x 4-7 mm, many-nerved. Flowers reddish orange to yellow in bud, orange to yellow at flowering, 23-40 mm long, mouth straight; outer segments connate for less than half their length, inner segments free; pedicels 2-7 mm long. Anthers exserted 7-15 mm. Ovary 4.0-6.0 x 1.5-3.0 mm, green; style exserted 7-18 mm. Fruit ±18-10 mm. Flowering time (May to) June to August.
Leaves in a dense rosette, erect and often slightly incurved; lamina 30–60 cm long, 9–14 cm wide toward the base, ovate-lanceolate, greyish-green, bronzed in dry conditions, with scattered reddish-brown prickles from a pale circular base on the lower surface and usually near the apex of the upper surface, otherwise unmarked; margin with pungent, reddish-brown deltoid teeth 3–4 mm long and 10–15 mm apart.
Perianth bright red in bud rapidly turning orange to greenish-yellow on opening, 28–35 mm long, c. 7 mm in diameter across the ovary, widening to c. 10 mm at the middle and narrowing slightly toward the mouth, cylindric; outer segments free for two-thirds with tips slightly spreading.
Acaulescent, succulent herb, up to 0.6 m high, excluding inflorescence. Leaves with random surface prickles throughout. Inflorescence ± 1 m high. Racemes erect, cylindrical, very dense. Flowers reddish orange to yellow in bud, orange to yellow at anthesis.
Inflorescence erect to 1.25 m high; peduncle simple or 1–3-branched; branches erect, subtended by deltoid scarious bracts c. 12 × 12 mm, with scattered sterile bracts below the racemes.
An aloe. It is a herb without a stem. The leaves are in a ring. They are 30-60 cm long and 9-14 cm wide near the base. They have reddish-brown prickles.
Racemes 20–50 × 7 cm, cylindric, very densely flowered; bracts 10–15 × 5–6 mm, ovate, scarious, brownish, strongly deflexed; pedicels c. 2 mm long.
Stamens and stigma exserted c. 15 mm; stamens with purple-tinged orange filaments and reddish-orange anthers; stigma pale orange.
Perennial herb, solitary, acaulescent.
Capsule and seeds not seen.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.45 - 0.6
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a subtropical plant. It grows in grassland and rocky bushveld.
Light 4-9
Soil humidity 2-4
Soil texture 5-7
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

Uses food
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 180
Germination temperacture (C°) 21
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -7
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Aloe aculeata unspecified picture
Aloe aculeata unspecified picture

Distribution

Aloe aculeata world distribution map, present in Botswana, South Africa, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:529169-1
WFO ID wfo-0000757803
COL ID C3BY
BDTFX ID 123861
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Aloe aculeata