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:--An erect herb. _Stems_ terete, hollow, striate,
pilose-hoary, laxly leafy. _Cauline leaves_ 1·2 to 15 cm. long, sessile;
the lower lyrato-pinnatifid, amply auricled, amplexicaul, on both sides
cobwebby-tomentose; the upper broadly ovate, closely crowded in the
young stems, cobwebby-tomentose, obtuse, with the margins entire or
remotely 1 to 2 toothed. _Heads_ peduncled, terminal, very large and
showy, 8 cm. in diam. (including the rays), the buds very hoary.
_Involucral bracts_ imbricate, in several rows; the outer narrower,
reflexed, herbaceous, green; the innermost row much longer, broadly
scariose, spreading below the rays; the whole involucre densely
cobwebby. _Receptacle_ 1·8 cm. in diam., convex, deeply honeycombed,
with the margins of the cells produced into a few bristles.
_Ray-florets_ female, 1-seriate, alternate rays spreading, others at
first ascending, then spreading, giving an appearance of two rows.
_Corolla_ ligulate; lamina bright orange coloured, oblong-cuneate, very
faintly 3-toothed at apex, of lower whorl smaller (2·5 cm. long) and
with a smaller brow-black blotch at the base than that of upper whorl (3
cm. long); tube 3 mm. long, broader at base than at the top,
subglabrous. _Ovary_ obovate in outline, muricated, glabrous; style 4
mm. long, cylindric, glabrous; stigmatic portion wider, with the
branches 0·5 mm. long, linear, flat, spreading. _Disc-florets_
hermaphrodite, fertile, numerous, crowded on the head. _Corolla_ 4 mm.
long, subcylindric, 5-cleft at the apex for about a quarter the length
of the tube, with 5 longitudinal rows of glandular hairs; lobes
blackish, 1 mm. long, linear, subacute, with the angles between the
lobes obtuse. _Anthers_ purplish, black, 2 mm. long, obtuse, with a
small suborbicular apical appendage; filaments 1·5 mm. long, linear,
flat, at length filiform, inserted on lower half of corolla tube.
_Ovary_ obovate in outline, white, muricated, glabrous; style 5·5 mm.
long, at first narrowly cylindric, then in upper half abruptly widening
into a yellow stigmatic portion, 2 mm. long, slightly cleft at the apex,
becoming much exserted. (National Herb., Pretoria, No. 2944.)
PLATE 198.--Fig. 1, longitudinal section of receptacle; Fig. 2,
ray-floret; Fig. 3, disc-floret; Fig. 4, inner involucral-bract;
Fig. 5, outer involucral-bract; Fig. 6, achene.
F.P.S.A., 1923.
[Illustration: 199.]
PLATE 199.
ERICA BLENNA var. GRANDIFLORA.
_Cape Province._
ERICACEAE. Tribe ERICEAE.
ERICA, _Linn._; _Benth. et Hook. f. Gen. Plant._ vol. ii. p. 590.
* * * * *
=Erica blenna=, _Salisb._ var. =grandiflora=, _Bolus. Fl. Cap._ vol. iv. sect. i.
p. 202.
* * * * *
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