178 XCVIII, ACANTHACEE (CLARKE).  [Brachystephanus. 
4-4 in. long, elliptic. Filaments } in. long, exserted; anthers jy in. 
long, glabrous; pollen globose, slightly 3-angled, most minutely echinu- 
late, with 3 stopples. Ovary oblong, glabrous; disc short; style of 
genus.—Lindau in Engl. & Prantl, Pflanzenfam. iv. 3 B. 344, and in 
Engl. Pfl. Ost-Afr. C. 372. 
Mozamb. Dist. British Central Africa: Nyasaland; Mount Mlanje, 6000 ft., 
Whyte, 56! 
This plant illustrates the illusory nature of the distinction between bracteoles 
(vorblaetter) and bract (deckblatt). Ifa “bract” from the upper part of the spike 
be taken off, the 2 lateral green bracteoles are seen in their regular position ; but ifa 
lower floral leaf be taken off, a growth from one or both the bracteoles is seen, the 
bracteole is broader and indicates an approach in shape to that of the deckblatt, and 
may support a perfect flower. 
2. B. Holstii, Lindau in Engl. Jahrb. xx. 53. Branchlets minutely 
pubescent. Leaves up to 4 by 2 in., narrowed at both ends, minutely 
pubescent beneath, at least on the midrib; petiole up to } in. long. 
Spikes 2} by 4 in., dense or interrupted, scarcely strobilate ; bracts 
4 in. long, narrow-lanceolate, ciliate. Sepals } in. long, linear-oblong, 
ciliate. Corolla crimson; tube ? in. long; lips nearly } in. long, 
elliptic. Filaments 4 in. long, exserted; pollen globose, echinate. 
Pistil of the genus.—Lindau in Engl. & Prantl, Pflanzenfam. 1V. 
3 B. 344, and in Engl. Pfl. Ost-Afr. C. 372. 
Mozamb. Dist. German East Africa: Kilimanjaro; Marangu, 7000 ft., 
Volkens, 838! Johnston, 1! Usambara; Magamba Mountain, Holst, 3811! 
This is allied to B. Lyallii, Nees, from Madagascar; but has a much shorter 
corolla-tube. 
3. B. longiflorus, Lindaw in Engl. Jahrb. xx. 53, Stem 3 ft. 
high, minutely pubescent. Leaves up to 54 by 21 in., narrowed at 
both ends, minutely and sparsely bristly on both surfaces ; petiole }-1} 1». 
long. Panicles up to 3 by 3 in., of very dense contracted cymes, with 
many-celled hairs of which the alternate cells are thicker; floral leaves 
2 by 3i5-$ in., narrow-lanceolate. Sepals exceeding } in. in length, 
linear-subulate, hairy as the bract. Corolla purple; tube 3-1 in. long ; 
lips 4 in. long, subentire. Anthers exserted } in.; pollen globose, 
slightly trigonous, 3-banded, smooth or very nearly so. Pistil of the 
genus. Capsule 4 in. long, 4-seeded.—Lindau in Engl. & Prantl, 
Pflanzenfam. iv. 3 B. 344, 
Upper Guinea. Cameroons: Buea, 5500 ft., Preuss, 890! 846! Fernando Po, 
3000 ft., Wann, 589! 
4. B. jaundensis, Lindau in Engl. Jahrb. xxii. 125. Stem 
2—5 ft. high, sparingly pubescent. Leaves up to 4 by 14 in., narrowed 
at both ends, puberulous or glabrate; cystoliths inconspicuous ; petiole 
up to $ in. long. Spike (condensed panicle) terminal or on a short 
axillary branch, 1-3 by 4 in.; bract and bracteoles } in. long, linea"; 
hispid-pubescent. Sepals } in. long, linear, hairy. Corolla light purple; 
tube 1-1} in. long, sparsely hairy without; lips 4 in. long, subentire. 
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