Aloe greatheadii Schönland

Species

Angiosperms > Asparagales > Asphodelaceae > Aloe

Characteristics

Plants solitary, acaulescent or sub-acaulescent. Leaves densely rosulate, about 47 cm long, 12 cm broad low down, and 13 mm thick, tapering gradually from the base to the apex; upper surface concave, dark glossy green, with numerous elongated whitish spots which towards the base are usually confluent and form irregular transverse bands; tower surface unspotted, pale green, more or less lined with interrupted dark green longitudinal lines, especially towards the margins; margins usually with a distinct brown cartilaginous border, marginal prickles brown, pungent, spreading, usually quite straight, about 5 mm long and up to 20 mm apart, interspaces straight or curved. Inflorescence branched, up to 1.75 m high, usually 2 or 3 from the same rosette. Peduncle glaucous, smooth below; branches usually with 2 or 3 long-acuminate, acute, membranous bracts, about 3-2 cm long and 7 mm broad at the base; bracts subtending the branches about 18 cm long and 3 cm broad at the base, long-acuminate, with a few prickles on the margins towards the apex. Raceme sometimes somewhat lax up to 30 cm long, but usually with the flowers congested into a short dense raceme about 9 cm long. Flower buds upright, whitish with 6 broad longitudinal stripes which are greenish above and reddish below, the open flowers pendulous. Bracts long-acuminate, acute, many-nerved, about 32 mm long and 5 mm, broad at the base. Pedicels lower 12 mm long. Perianth 32 mm long, 7 mm diam. over the ovary, constricted above the ovary to 5 mm diam., thence ampliated to 8 mm, diam. on the one axis, and laterally compressed to 6 mm on the other, curved, tube a little over half the length of the perianth; outer segments both inside and outside white with a broad red faintly 5-nerved median line; inner segments white, shading to yellow at the apex with a red 5-nerved median line. Stamens and Style as long as the perianth, or slightly exserted, stamens pale flesh colour, style yellow. Ovary 9 mm long, 3 mm diam.
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Plants usually stemless, sometimes short-stemmed in old, robust plants; 150-300 mm tall excluding inflorescence; usually solitary. Leaves ±12 per rosette, 160-470 x 60-120 mm, upper surface channelled, dark green with many pale spots in irregular transverse bands, lower surface convex, pale green, lineate. Inflorescence with 3-8 ultimate branches, 1.0-1.75 m tall; racemes capitate to subcapitate, dense; bracts narrowly deltoid-acuminate, 10-20 x 2-4 mm, 3-many-nerved. Flowers dull flesh-pink to almost white, often with paler longitudinal stripes, 22-35 mm long, subclavate above basal constriction; outer segments free for 7-10 mm, inner segments adnate to outer; pedicels 12-25 mm long, length-ening to +30 mm in fruit. Anthers exserted 1-2 mm. Ovary 5.0-7.0 x 1.5-3.0 mm, green; style exserted 2-3 mm. Fruit 19-32 x 9-15 mm, pink-ish grey. Seeds deep grey-maroon, ±4.0 x 2.5 x 1.0 mm, wing small to absent.
Leaves in a compact rosette, spreading; lamina 20–40 × 6–12 cm, broadly lanceolate, usually dried and twisted in the apical 5–15 cm, dull greyish-green, with conspicuous elongated whitish spots arranged in irregular transverse bands on the upper surface, pale greyish-green and unspotted on the lower surface, lineate especially near the margins; margin horny and often brownish with pungent deltoid red-brown teeth 4–6 mm long and 10–15 mm apart; sap drying yellow.
An evergreen succulent plant. The leaves can be 40 cm long. The leaves have a reddish-brown to deep green upper surface. There are reddish teeth along the edge. There can be 2 or 3 flower stalks from one ring of leaves. The flower stalk can be 1.4 m long. The flower heads are 20 cm long. The fresh buds are pink. The flowers have white stripes. Plants sucker and grow in groups.
Perianth pale pink, with paler margins to the segments running to the base of the perianth, 25–32 mm long, 7–8 mm in diameter across the ovary, constricted just above the ovary, then widening and becoming slightly decurved towards the mouth, cylindric-trigonous; outer segments free for more than one-third, scarcely spreading at the tips.
Inflorescences 1–3, erect, 1.25–1.75 m high; peduncle sturdy, 3–10-branched, the lowest branches sometimes rebranched; branches suberect, subtended by deltoid, scarious, many-nerved bracts 2–3 cm long.
Perennial herb, solitary or suckering to form small groups of plants, acaulescent or with a stout stem to 30 cm tall covered with dead leaf remains.
Racemes 8–20 × 7 cm, conical-cylindric, ± densely flowered; bracts 10–15 mm long, linear-lanceolate, scarious; pedicels 12–18 mm long.
Stamens and stigma scarcely exserted.
Capsule and seeds not seen.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.25 - 0.3
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 can grow in arid places. It grows on termite mounds. It suits hardiness zones 8-11. Coffs.
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Stony grassland and open Brachystegia woodland at elevations from 1,000-1,500 metres.
Light 7-9
Soil humidity 3-5
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

Usage

The flower buds are eaten. They need to be boiled in 3 changes of water before use. Caution: The flower buds can cause vomiting.
Uses environmental use food gene source invertebrate food medicinal poison
Edible flowers leaves
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

It can be grown by division or by seeds.
Mode seedlings
Germination duration (days) 30 - 180
Germination temperacture (C°) 21
Germination luminosity light
Germination treatment -
Minimum temperature (C°) 1
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Aloe greatheadii unspecified picture

Distribution

Aloe greatheadii world distribution map, present in Botswana, Mozambique, eSwatini, South Africa, and Zimbabwe

Conservation status

Aloe greatheadii threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:50956804-1
WFO ID wfo-0000758255
COL ID C3NT
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Aloe greatheadii

Lower taxons

Aloe greatheadii var. davyana Aloe greatheadii var. greatheadii Aloe greatheadii var. davyana