Acanthus. | XCVIII, ACANTHACEE (CLARKE). 107 
South Central. Congo Free State: Kirunga Volcano, north of Lake Kivu, 
6600 ft., Gétzen, 24 ! 
Mozamb. Dist. German East Africa: Karagwe, 4500 ft., Stuhlmann, 1764! 
Marara, Fischer, 488! Usui, Speke g Grant, 136! 
Also in Arabia, 
The measurements given in the above description are from Kotschy, 489, an 
tnusually fine example, and the size of the leaves, calyx and flowers, runs down in other 
examples till we reach 4. Gaéd, Lindau, from 5000 ft. alt., where the dimensions are 
scarcely 3 those of Kotschy, 489. As regards hairiness, the examples become usually 
glabrate except the inflorescence ; but in Steudner, 1532, the well-matured leaves are 
densely woolly beneath with several-celled white hairs, and have similar hairs 
scattered above, There are examples intermediate in hairiness between this example 
and the ordinary A, arboreus; I cannot characterise even a variety here; the adjacent 
species are equally variable as to hairiness. 
2. A. eminens, (. B. Clarke. Glabrate, 6-8 ft. high. In- 
florescence pubescent. Leaves 10 by 4 in., pinnatifid, spinous, petiole 
hardly any, Spike 9 by 24 in.; bracts scarcely 1 in. long, ovate, 
hardly acute, with several spines on the margin ; bracteoles } in. long, 
subulate, not spinous. Calyx soft, not spinescent; posticous segment 
13 by nearly  in., broadly oblong, not lanceolate upwards ; anticous 
Segment the same size and shape, 2-nerved, minutely emarginate at the 
tip; 2 inmost segments 3-3 in. long, lanceolate. Corolla 2 in. long, 
purple (Scott-Elliot). Ovary large, with hemispheric cap ; style in the 
lower half densely short hairy. 
Nile Land. British East Africa: Mau, 8000 ft., Scott-Elliot, 6926! 
3. A, montanus, 7’, Anders. in Journ. Linn, Soc. vii. 37. Glabrous 
or hairy, Calyx 3-1 in. long; anticous segment with 2 spinous 
lanceolate lobes at the tip; otherwise nearly as 4. arboreus.—Bot. 
4g. t. 5516; 8. Moore in Journ. Bot. 1880, 232; Lindau in 
Engl. & Prantl, Pflanzenfam. iv. 3 B. 319. A. caudatus, Lindau 
m Engl. Jahrb. xx. 33, and in Engl. & Prantl, Pflanzenfam. 1Vv. 3 B. 
319, Cheilopsis montana, Nees in DC. Prod. xi. 272; Benth. in Hook. 
Niger F]. 481, 
Upper Guinea. Sierra Leone: Kofiu Mountain, Scott-Elliot, 4619! Lagos, 
Rowland ! Millen, 101! 203! Yoruba, Millson, 17! Fernando Po: on mountains, 
Vogel, 239 | 2000) ft., Mann, 639! Cameroons: Rio del Rey, Johnston ! Victoria, 
reuss, 1354! Barombi, Preuss, 487 ! . 
Lower Guinea. Princes Island, Barter, 2036! Gaboon : Munda ; . peopl 
Farm, Soyaux, 300! Buchholz ! Angola: Pungo Adongo, Welwitsch, 5076! 5167: 
ambo River, Mechow, 500! and without precise locality, Curror! 
South Central, Lunda: Lulua River, Pogge, 313! 1004! 
7 yrozamb. Dist. British Central Africa: Nyasaland ; Masuku Plateau, 6500- 
t., Whyte! 
This species, usually 3 ft. high, is very close to A. arboreus, The flowers ane 
Capsules are larger than in many examples of A. arboreus. In the type examples, 
faves are “caudate.” As to hairiness, in Scott-Eiliot, 4619, one inflorescence toa 
sbaringly pubescent, in the other the bracts are conspicuously hirsute with many patent 
Ong white hairs, 
