The flowering plants of South Africa; vol. 5Pole Evans, I. B. (Illtyd Buller)
Science
The flowering plants of South Africa; vol. 5
Pole Evans, I. B. (Illtyd Buller)
Plants -- South Africa -- Periodicals; Plants -- South Africa -- Pictorial works -- Periodicals
DESCRIPTION:--_Leaves_ up to 1 m. long, ovate-lanceolate, acuminate,
acute, concave-convex in cross-section, prickly on the face and back,
with the margins armed with prickles. _Inflorescence_ a branched raceme,
with the primary branches horizontal. _Flowers_ more or less secund.
_Bracts_ broadly ovate, shortly acuminate. _Perianth_ tubular. _Stamens_
at length exserted. _Ovary_ ellipsoid, style cylindric, at length
exserted; stigma small.
PLATE 171.--Fig. 1, plant, much reduced; Fig. 2, median
longitudinal section of flower; Fig. 3, bract; Fig. 4, part of
stamen; Fig. 5, pistil.
F.P.S.A., 1925.
[Illustration: 172.]
PLATE 172.
HYPOXIS ROOPERI.
_Basutoland_, _Cape Province_, _Natal_, _Transvaal_.
AMARYLLIDACEAE. Tribe HYPOXIDEAE.
HYPOXIS, _Linn._; _Benth. et Hook. f. Gen. Plant._ vol. iii. p. 717.
* * * * *
=Hypoxis Rooperi=, _Moore in Gard. Comp. 1_, 65, cum icone; _Fl. Cap._
vol. vi. p. 188.
* * * * *
The accompanying plate is our first illustration of a characteristic
South African genus, namely, _Hypoxis_. The genus contains over sixty
species, of which number more than forty are found in the Union, the
remainder being natives of tropical Africa, tropical Asia, Australia and
America.
The species is acaulescent, with a large underground corm crowned with a
ring of bristles, and bears a number of distichous leaves. The
flower-stalks arise from the axils of the leaves.
It is quite a common plant in the south-eastern portion of the Cape
Province, and extends through East Griqualand into Natal and northwards
into the Drakensbergen round Barberton. It has, however, also been
recorded from the Potchefstroom District in the Transvaal.
In winter the leaves die down, but appear again as soon as the frosts
cease, and sometimes long before the summer rains commence the plants
are in full bloom in the veld.
Our plate was prepared from specimens flowering at the Division of
Botany, Pretoria.
DESCRIPTION:--_Leaves_ up to 30 cm. long, 3·2 cm. broad, strap-shaped,
narrowing upwards, falcate, folded from the midrib, closely and
distinctly ribbed, almost glabrous on the upper surface, softly pilose
on the back and margins. _Peduncles_ much shorter than the leaves,
villous. _Bracts_ 1·3 cm. long, linear, acute, villous on the back.
_Pedicels_ up to 1·6 cm. long, villous. _Outer perianth-segments_ 2·2
cm. long, 8 mm. broad, oblong, obtuse; inner segments 2·1 cm. long, 1·5
cm. broad, elliptic, obtuse. _Filaments_ shorter than the anthers.
_Ovary_ subglobose, villous, stigmas 3-lobed, papillose on the margins.
PLATE 172.--Fig. 1, plant, much reduced; Fig. 2, portion of
peduncle showing bracts and part of pedicels; Fig. 3, flower,
surface view; Fig. 4, flower, back view; Fig. 5, anthers; Fig. 6,
stigma, side and top views; Fig. 7, transverse section of ovary.
F.P.S.A., 1925.
[Illustration: 173.]
PLATE 173.
CRASSULA COLUMNARIS.
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