Peristrophe.| XCVIII. ACANTHACEE (CLARKE), 243 
Leaves up to 4 by 1} in., elliptic-lanceolate; petiole } in. long ; leaves 
usually smaller and very few in the inflorescence. Panicles often 12-18 
in. long, very lax, much divided, spikelets with but one perfect flower ; 
bracts 4 in. long. Calyx scarcely } in. long, minutely puberulous. 
Corolla 4 in. long, pale purple. Capsule } in. long, hairy at the top; 
seeds minutely papillose.—DC. Prod. xi. 496; Benth. in Hook. Niger 
Fl. 484; A. Rich. Tent. FI. Abyss. ii. 160; T. Anders. in Journ. Linn. 
Soc. vii. 47; Solms-Laub. in Schweinf. Beitr. Fl. Aethiop. 113, 244; 
C. B. Clarke in Hook. f. Fl. Brit. Ind. iv. 554; Lindau in Engl. & 
Prantl, Pflanzenfam. iv. 3 B. 331, in Engl. Pf. Ost-Afr. C. 371, and in 
Ann. Istit. Bot. Roma, vi. (1896) 80. P. kotschyana, Nees in DC. Prod. 
x1. 497; A. Rich. Tent. Fl. Abyss. ii. 160; Zarb, Cat. Spéc. Bot. Pfund, 
32. Dianthera bicalyculata, Retz. in Acta Holm. 1775, 297, t. 9. D. mala- 
barica, Linn. f. Suppl. 85. Justicia bicalyculata, Vahl, Symb. ii. 13. 
J. ligulata, Lam. Tl. t. 12, tig. 2; Cav. Ie. i. 52, t. 71. 
Upper Guinea. Cape Verd Islands: St. Iago, Welwitsch, 5176! Senegal, 
Leliévre! Perrottet! Roger! Gambia, Boteler! Cape Verd, Smith! Niger 
Territory : Borgu, Barter, 767! Bornu; Kuka, Vogel, 34! 
Nile Land. Nubia: coast region, Bent ! Schweinfurth, 348! Khartoum, Schwein- 
Jurth, 772! 795! Kordofan, Pfund, 405! 406! 438! Kotschy, 50! 161! Eritrea: 
Acrur, 6000 ft., Schweinfurth & Riva, 726! Bogos; Tsad Amba, Steudzer, 1517! 
Sarat, Steudner, 1516! Keren, Steudner, 1514! Abyssinia: Jelajeranne, Schimper, 
694! Haramat district near Geraz, Schimper, 1095! Jaja, Schimper, 289! Togodele, 
Ehrenberg ! and without precise locality, Salt! Schimper, 666! 1511! Somaliland, 
Robecchi, 242! 251! 
Lower Guinea. German South-west Africa: Hereroland, 3300 ft., Marloth, 
1312! Amboland ; Oshando, Schinz! 
Mozamb. Dist. German East Africa: Kilimanjaro, Volkens, 452! British 
Central Africa: Stevenson Road, 4000-5000 ft., Scott-Elliot, 8247! Eastern 
Bechuanaland: Tati, Holub ! 
2. P. Hensii, (. B. Clarke. Panicle large with strongly hexagonal 
branches, much denser, with larger spikelets; otherwise as P. bicaly- 
culata.—Dicliptera Hensii, Lindau in Engl. Jahrb. xxii. 120. 
South Central. Lower Congo: Stanley Pool, 1000 ft., Hens, 53! 
This is a Peristrophe (closely allied to P. bicalyculata, which has invariably 
a more straggling panicle) identical with one from Natal and Kaffraria. 
3. P. luteoviridis, (. B. Clarke. Stout herb, glabrous except 
the inflorescence, yellow-green. Leaves up to 3} by 1 in., narrowed at 
both ends; petiole } in. long. Clusters of flowers approximated in 
rather dense spikes 3 by 1 in.; floral leaves up to ? by } in., intermixed. 
Spikelets 1-flowered ; bract 4—} in. long, lanceolate; bracteoles $ in. 
long, linear. Calyx }-} in. long. Corolla }-1 in. long, rose, purple- 
spotted (Sehweinfurth). Anther-cells at nearly equal height, rounded 
at the base ; pollen ellipsoid with 3 stopples, on the longitudinal smooth 
bands are single rows of minute spots, one row on each side of each 
Stopple. Capsule } in. long, stout, solid-stalked; seeds 4, discoid, 
Smooth.— Vicoteba lanceolata, Lindau in Engl. Jahrb. xx. 38, and in 
Engl. & Prantl, Pflanzenfam. iv. 3 B. 329. 
