48 ACANTHACEE (Clarke), [ Barleria. 
Linn. Soe. vii. 28; Engl. in Engl. Jahrb. x. 263; Lindau in 
Engl. § Prantl, Pflanzenfam. iv. 3B, 314. B. pungens, Thunb. 
Fl. Cap. ed. Schult. 458; EH. Meyer in Drége, Zwei Pflanzen- 
geogr. Documente, only 129, 168. 
Var. 8, rigida (C. B. Clarke); leaves oblong, 2 by 3-2 in., nearly glabrous, 
narrowed at the base into a very short petiole, margins much sinuate, more 
spine-toothed. B. rigida, Nees in DC. Prod. xi.242 ; Sonder in Linnza, xxiii. 92. 
Soutu AFRICA: without precise locality, Harvey / 
Coast ReG@ion: Uitenhage Div.; by the Sunday River, 1000 ft., Zeyher, 1421 ! 
hills by the Zwartkops River, Drége / 
CENTRAL ReGion: Somerset Div.; Somerset East, Bowker, 161! 65! Graaff 
Reinet Div. ; near Graaff Reinet, 2500 ft., Bolus, 563! Var. 8: Calvinia Div., 
Springbok Kui!, 2000-3000 ft., Zeyher, 1417! 
KALAHARI Reeion: Griqualand West; Groot Boetsap, 4009 ft., Marloth, 966! 
Var. 8: Griqualand West; Kimberley, Mrs. Barber! Hay Div.; plains between 
Griqua Town and Witte Water, Burchell, 1991 ! 
Westexn ReGion: Great Namaqualand; ‘Tiras, Schinz, 3! 
5. B. stimulans (E. Meyer in Drége, Zwei Pflanzengeogr. Docu- 
mente, 61, 62, 168); woody, densely branched and thorny with 
many nearly simple spines }—1 in. long; leaves 3—% in. long, ovate, 
mucronate, margins without spinous teeth ; posticous sepal 1—2 by 
3 m., ovate, margins not (or most obscurely) spine-toothed. Nees in 
DC. Prod. xi. 241; Sonder in Linnea, xxiii. 92, including var. 
macracantha ; T. Anders. in Journ. Linn, Soc. vii. 28; Lindau in 
Engl. & Prantl, Pflanzenfam. 3B, 315. 
Sourn Arica: without precise locality, Zeyher, 1416! 
CentTRAL ReGion: Prince Albert Div.; Gamka River, Burke ! Graaff Reinet 
and Jansenville Divs. ; by the Sunday River, 1500-2000 ft., Drege / 
Katanari ReGion: Prieska Div.; Keikams Poort (Modder Gat Poort), 
Burchell, 1621! 
6. B. Virgula (C. B. Clarke) ; minutely and thinly strigose with 
simple white hairs; twigs 6 in. long, very slender, straight; leaves 
attaining } by ;'y in., linear, nearly entire ; axillary spines 2 in. long, 
subpinnatifid at the base ; flowers axillary, subsolitary ; posticous 
sepal 5 in. long, lanceolate, margins with a few rigid teeth; corolla- 
tube j in. long ; lobes }-} in. long; capsule rather more than + in. 
long, ellipsoid, flattened, glabrous, 4-seeded. 
Katanari Recion: Transvaal, Marico District, Holub ! 
7. B. bechuanensis (C. B. Clarke); branchlets 1-2 in. long, from 
a woody stock, with minute lines of hairs; leaves attaining 1 by 
7's in., linear, mucronate, glabrate, margins cartilaginous white spine- 
toothed ; axillary spines } in. long, linear-lanceolate, subfoliaceous ; 
flowers solitary, axillary; posticous sepal 1-1 in. long, elliptic- 
lanceolate, minutely hairy, margins spine-toothed; corolla deep 
blue; tube exceeding 3 in. in length, linear-cylindric to the top ; 
lobes } in. long, orbicular. 
Var. 8, espinulosa (C. B. Clarke) ; leaves without marginal teeth, obtuse, not 
distinctly mucronate. 
Katanarr Re@ion: Bechuanaland ; Batlapin Territory, Holub! Var. B: 
Griqualand West ; by the Vaul River at the Diamond Fields, Nelson, 151! 
