Neuracanthus. | XCVIII, ACANTHACEE (CLARKE). 139 
short lateral branches, with many-celled hairs and also long needle-like 
one-celled hairs; bracts }~-} in. long, broadly obovate, shortly apiculate, 
3-nerved as the hairs wear off. Calyx and corolla nearly as of 
NV. scaber. 
Nile Land. British East Africa: Ukamba, Hildebrandt, 2723! 
This has been put with MW. scaber, S. Moore. 
6. N. niveus, S. Moore in Journ. Bot. 1880, 37. White stellate- 
tomentose ; branches 2 ft. long, from a short woody rootstock. Leaves 
up to 4 by 24 in., broadly elliptic, acute, entire, upper surface finally 
glabrate with subconspicuous cystoliths ; petiole 0—} in. long. In- 
florescence of dense axillary heads 1-1} in. diam., with long white hair, 
made up of few-flowered condensed unilateral spikes; bract 4-4 in. 
long, ovate, acute, soft mucronate, dark brown. Calyx 4-1 in. long, of 
2 pieces, each divided rather more than 4 way down; teeth 5, linear- 
lanceolate, long hairy. Pollen globose-subtrigonous, smooth, without 
longitudinal depressions. Pistil of genus.—Lindau in Engl. & Prantl, 
Pflanzenfam. iv. 3 B. 315. 
Nile Land. British East Africa: Jur; Jur Ghattas, Schweinfurth, 1963! 
7. N. Lindaui, (. B. Clarke. Stem and young leaves densely 
white-tomentose. Mature leaves 21 by 1 in.; tip triangular; base 
tapering into a petiole 4 in. long; main nerves about 9 pairs, finally 
nearly glabrate above. Heads hardly 1 in. in diam., on short lateral 
branches, white woolly ; bracts substrobilate }-} in. long, broadly 
obovate, shortly apiculate, obscurely 3-nerved as the white wool wears 
off. Calyx and corolla as in V. niveus.—Leucobarleria nivea, Lindau in 
Ann. Istit. Bot. Roma vi. [1896] 77, and in Engl. & Prantl, Pflanzenfam. 
Nachtr. zu ii.—iy, 306, not Neuracanthus niveus, S. Moore. 
ough” Land. Somaliland: between Danna and Ueb (River) Karanle, Riva, 
! 
. 8. N. polyacanthus, (. B. Clarke. Harsh branched shrub 10 in. 
in diam.; young parts white stellate-tomentose. Leaves j-1 by 3 in., 
ovate, entire, when mature glabrate; petiole 0—}in. long. Inflorescences 
i axillary prickly heads, 3 in. in diam., made up of 1-flowered and 
sterile unilateral scorpioid cymes; sterile spike “‘ flexuous many-prickled 
pubescent spine” of Lindau; fertile spike nearly same with 1 flower at 
the base ; bract linear, } in. long. Calyx }-} in. long ; segments 2, ovate, 
acute, subsimilar, subentire; anticous 2-nerved ; posticous 3-nerved. 
ollen globose-subtrigonous, smooth, without longitudinal depressions. 
Capsule 4-4 in. long, ovoid, acute, hardly beaked, 2-seeded, compressed, 
shining brown.—Lencobarleria polyacantha, Lindau in Ann. Istit. Bot. 
Roma vi. (1896) 77, and in Engl. & Prantl, Pflanzenfam. Nachtr. 
7" liv. 306; Rendle in Journ. Bot. 1896, 413. 
Nile Land. Somaliland: Terfa Torrent-bed, Donaldson Smith! Ogaden, 
Robecchi, 2401 Elba, Riva, 914! Abdallah, Keller, 198! 
