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:--A much-branched shrub. _Leaves_ alternate, sessile, 0·5 to
2·5 cm. long, linear, acute, pungent, with revolute margins, glabrous
above, woolly beneath. _Heads_ subsessile, solitary, terminal, 2·5 to 3
cm. in diameter (including the rays). _Involucral-bracts_ in many rows,
unequal; the outer gradually shorter, recurved, aristate, 3 to 4 mm.
long, 1 mm. broad, narrowly ovate with the apices edged with brown to
black, woolly; inner 5 to 6 mm. long, 1 mm. broad, linear-oblong;
innermost 7 to 8·5 mm. long, 0·5 to 1 mm. broad, narrow-linear to
oblong-elliptic, with membranous margins. _Receptacle_ flat, nude,
honeycombed with the margins of the cells evident. _Ray-florets_ female;
tube 4 to 5 mm. long, cylindric, widening above, glabrous; lamina
oblong-elliptic. _Ovary_ terete, pilose; style cylindric, glabrous,
deeply 2-cleft. _Disc-florets_ hermaphrodite, fertile. _Corolla_ 6 mm.
long, tubular, cylindric below, then articulated and the uppermost
one-third slightly wider, glabrous. _Anthers_ tailed at the base, with
an ovate obtuse apical appendage. _Ovary_ pilose; style cylindric,
glabrous, deeply 2-cleft; branches 1 mm. long, linear, truncate,
penicillate. _Pappus-bristles_ equalling the corolla-tube, rigid,
persistent, subplumose in the uppermost one-third, alternating with
minute serrulate scales. (National Herb., Pretoria, 2942.)
PLATE 195.--Fig. 1, diagrammatic longitudinal section of head; Fig.
2, ray-floret; Fig. 3, disc-floret; Fig. 4, involucral-bract; Fig.
5, pappus enlarged; Fig. 6, pappus-bristle; Fig. 7, fimbriated
pappus-scale.
F.P.S.A., 1925.
[Illustration: 196.]
PLATE 196.
SUTERA BURKEANA.
_Transvaal, Zululand._
SCROPHULARIACEAE. Tribe _Manuleae_.
SUTERA, _Roth._ (including _Lyperia_, Benth.); _Benth. et Hook. f. Gen. Plant._
vol. ii. p. 945.
* * * * *
=Sutera Burkeana=, _Hiern. Fl. Cap._ vol. iv. sect. ii. p. 299.
* * * * *
The _Sutera Burkeana_ here figured for the first time is a common plant
in some localities around Pretoria and is to be found in flower from the
beginning of August onwards. It is a bush up to 2-1/2 ft. high and
appears to be very localised in its distribution, as only isolated
patches are met with on the hills surrounding Pretoria. It has also been
recorded from the neighbourhood of Johannesburg and from Zululand.
The plant flowers profusely, and when in full bloom makes a fine display
and would no doubt be improved under proper cultivation.
Our Plate was prepared from specimens collected by Mr. C. A. Smith near
Pretoria.
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