The flowering plants of South Africa; vol. 3Pole Evans, I. B. (Illtyd Buller)
Science
The flowering plants of South Africa; vol. 3
Pole Evans, I. B. (Illtyd Buller)
Plants -- South Africa -- Periodicals; Plants -- South Africa -- Pictorial works -- Periodicals
The Aloe which forms the subject of this plate is, so far as is known,
only found on the Bokkeveld beds in the Clanwilliam and Van Rhynsdorp
Districts of the Cape Province. Full-grown plants attain a height of
12-15 ft., and when in full bloom, which is usually during December and
January, their long massive inflorescences make such a display of colour
in the veld that they cannot fail to attract the notice of the
traveller. As will be seen from the illustration, the uppermost flowers
are hidden by the long bracts, the flowers in the middle portion of the
inflorescence are pink and spreading, while those at the base are
pendulous and greenish-white. The stamens are only exserted from the
pendulous flowers, and after pollination the filaments contract and are
withdrawn into the perianth, which closes round them, leaving the style
exserted. This phenomenon is also found in _Aloe saponaria_ figured on
Plate 96, and is probably fairly general in the genus _Aloe_.
The material from which our plate was made was collected by Dr. I. B.
Pole Evans, C.M.G., on the Doorn River near Van Rhynsdorp, and brought
to Pretoria, where the plants flower regularly every year during
December and January. _Aloe comosa_ was first collected and described by
Dr. R. Marloth, who found it between Clanwilliam and Van Rhynsdorp in
1904.
DESCRIPTION:--Plant with a short stout stem or sometimes up to 12 ft.
bearing a rosette of fleshy leaves at the apex, _Leaves_ up to 52 cm.
long, 10 cm. broad in the widest part, ovate-lanceolate, acuminate,
acute, flat above, slightly convex beneath, deeply channelled on the
upper surface above, with the veins somewhat distinct on the upper
surface and with the margins covered with sharp teeth; teeth 5-7 mm.
apart, 2 mm. long, ovate. _Inflorescence_ lateral about 1·3 m. long,
racemose, narrowly cylindric, with the lowermost flowers pendulous, the
upper flowers erect and adpressed and the median flowers spreading.
_Peduncle_ about 60 cm. long, 1·5 cm. in diameter, terete, covered with
long membranous ovate-acuminate bracts 5 cm. long, 1 cm. broad.
_Floral-bracts_ 6 cm. long, lanceolate, long acuminate, acute, with
membranous margins, encircling the pedicel. _Pedicel_ 1·8-2 cm. long, at
first erect, at length becoming curved, terete. _Perianth-tube_ 1·2 cm.
long, campanulate; outer lobes grenadine-pink, 2 cm. long, 5 mm. broad,
lanceolate, hooded at the apex, 3-nerved; inner lobes whitish, 2 cm.
long, obtuse and hooded at the apex, 1-nerved. _Filaments_ 1·8 cm. long,
lengthening to 4 cm. long in old flowers; anthers 3 mm. long, oblong.
_Ovary_ ellipsoid; style 2 cm. long, lengthening to 4 cm. in old
flowers; stigma simple with a ring of papillose hairs. (National Herb.
Pretoria, No. 2643.)
Public-domain text, read in full here on John Shaqi.
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