A synoptic review of the aloes (Asphodelaceae, Alooideae) of KwaZulu-Natal, an ecologically diverse province in eastern South Africa
Author
Klopper, Ronell R.
Author
Crouch, Neil R.
Author
Smith, Gideon F.
Author
van Wyk, Abraham E.
text
PhytoKeys
2020
142
1
88
http://dx.doi.org/10.3897/phytokeys.142.48365
journal article
http://dx.doi.org/10.3897/phytokeys.142.48365
1314-2003-142-1
7B3A5CC9B82952B6B3E20C46E12DB4F1
Aloe spicata L.f.
Syn.
Aloe sessiliflora
Pole Evans.
Common names.
Lebombo aloe (English); Lebombo-aalwyn (Afrikaans); inhlaba (Zulu).
Description.
Acaulescent to arborescent or shrubby plants.
Stem
1-2 m high, unbranched or branched low down or high up, erect to decumbent, with persistent dried leaves.
Leaves
densely rosulate, spreading to slightly recurved, green to sometimes almost entirely reddish on upper surface, without markings, lanceolate-attenuate, canaliculate, 50-80 cm long, 7-10 cm wide; margin reddish, with small deep pink to reddish teeth, 1-2 mm long, 8-15 mm apart; exudate pale honey-coloured.
Inflorescence
0.6-1.2 m high, erect, simple.
Raceme
cylindrical, 30-50 cm long, 4-5 cm diameter, very dense.
Floral bracts
+/-
10 mm long, 6 mm wide.
Pedicels
absent.
Flowers
:
perianth
buds pale brownish-red, greenish-yellow when mature, 14-15 mm long, 5-6 mm across ovary, widening towards wide open mouth, campanulate; outer segments free to base;
stamens
exserted to 10 mm;
style
exserted 10-12 mm.
Flowering time.
June-August.
Habitat.
Wide variety of soils and habitats, including steep rocky slopes and cliffs. It is never found in exposed situations in deep soil.
Diagnostic characters.
Aloe spicata
is one of only two aloes indigenous to KwaZulu-Natal that have sessile campanulate flowers with dark nectar in a simple inflorescence. It differs from
Aloe vryheidensis
in often being acaulescent in KwaZulu-Natal or sometimes having erect to decumbent stems (not procumbent), spreading to recurved leaves (not erect) and an erect inflorescence (not oblique). Racemes of
Aloe spicata
are narrow (4-5 cm wide) with greenish-yellow flowers (not pinkish-brown). The ovary is uniformly green (without red lines).
Conservation status.
Least Concern (
Raimondo et al. 2009
).
Distribution.
Northern KwaZulu-Natal, Mpumalanga and Limpopo in South Africa, also throughout Eswatini and in southern Mozambique, with an isolated record in Zimbabwe (Fig.
41
).
Figure 41.
Aloe spicata
. Photo: G.F. Smith.