IOC xcviii. ACANTHACE.^ (clarke). [Aca'/ithus. 



bracteoles 2, ovate, spinous or unarmed, or linear, or 0. A genus very 

 close to Blepharis, which is absolutely separated by the hairy seeds. 



Species 8 or 10, extending from South Europe and Africa to Malaya, Australia, 

 and Polynesia. 



Bracts very spinous ; pollen oblong-ellipsoid ; seeds 

 shining brown. 

 Leaves spinous, lobed, often subpinnatifid. 



Anticous calyx-segment 1 in. long, with entire tip 1. A. arhoreus. 

 Anticous calyx-segraent '^ in. long, shortly 2-lobed. 



Lobes of anticous calyx-segment short, rounded. 2. A. eminens. 

 Lobes of anticous calyx-segment ending in short 



spines . . . . . . . 3. A. montanus. 



Leaves serrate, hardly lobed . . . . . 4:. A. Barteri. 



Leaves subentire. 



Leaves elongate, obovate-lanceolate . . . h. A. mayaccanus. 



Leaves elliptic, short acuminate. 



Anticous'calyx-segment nearly 1 in. long . 6. A. lafisepalus. 



Anticous calyx-segment -3-^ in, long , . ^ . A. Dusenii. 



Bracts not spinous on the margin ; pollen short- ellipsoid 



(subglobose) ; seeds corrugated . . . . S. A. iUcifolius. 



1. A. arboreus, Forsk. Flor. /Egypt.- Arab. 115. Pubescent or 

 glabrate, stout shrub '^-l\) ft. high. Leaves up to 12 by G in. (often only 

 half this size), pinnatifid half-way down, or lobate with doubly spinous 

 margin; petiole 0-J in. long. Spikes ?>-\, terminal, up to 6-10 by 

 2 in., often pubescent or hairy; bracts Ij by J in., ovate-lanceolate, 

 acuminate, with many strong spines on the margin i in. long; 

 bracteoles \\ by J in., spinous on the margins. Posticous calyx-segment 

 exceeding 1 in. in length, lanceolate, 3-nerved, spine-tipped ; anticous 

 calyx-segment exceeding 1 in. in length, lanceolate, 2-nerved ; 2 inmost 

 calyx-segments J in. long, elliptic-lanceolate, mucronate. Corolla 1| in. 

 long, rose or pale-purple. Capsule |- by J in. — T. Anders, in Journ. 

 Linn. Soc. vii. 37 ; Engl. Hochgebirgsfl. Trop. Afr. 390 ; Lindau in 

 Engl. & Prantl, Pflanzenfam. iv. 3 B. 319. A. arhoreus^ var. 

 puhescens, T. Thorns, in Speke, Nile Append. 043 ; Oliv. in Trans. Linn. 

 Soc. xxix. 129, t. 8G. A. polystachius, Delile, Cent. PI. Afr. ^'2, t. 1, 

 fig. 2. A. pubescens, Engl. Hochgebirgsfl. Trop. Afr. 390 ; Lindau in 

 Engl. Pfl. Ost-Afr. C. 370, and in Ann. Istit. Bot. Roma vi. 76. 

 A. Gaed, Lindau in Engl. Jahrb. xx. 33, and in Engl, ct Prantl, Pflan- 

 zenfam. iv, 3 B. 319. Cheilopsis arborea, Nees in DC. Prod. xi. 272. 

 Ch. pohjstachja, Moq.-Tand. in Ann. Sc. Nat. ser. 1, xxvii. 230; Nees 

 in DC. Prod. xi. 272 ; A. Rich. Tent. Fl. Abyss, ii. 151 ; Solms-Laub. 

 in Schweinf. Beitr. Fl. Aethiop. 243. Ch. Steudneri, Solms-Laub. 

 in Schweinf. Beitr. Fl. Aethiop. 243 in obs. Dilivaria ? polystackya, 

 Endl. Gen. 703. 



Wile Ziand. Upper Senaar : Fazokl, Kotschy, 489 ! Abyssinia : Dembea ; Gondar, 

 Stetidner, 1532 ! Begemeder ; near Gaf'at, Steudner, 1533 ! Schimper, 1534 ! 

 Amora-Gettel, Schimper, 1535 ! and without precise locality, Flowden ! Somaliland : 

 Coromma, Eiva, 621 ! between Alghe and Oi, Riva, 1265 ! Maid, 5000-6000 ft., 

 Hildehrandt, 1399! British East Africa: Uganda, Wilson, 94! Stuhlmann,13hO \ 

 Kavirondo ; Nandi llange, Scott-Elliot, 7057 ! Victoria Nyanza, Stuhlmann^ 895 ! 



