24 DR. T. ANDERSON ON AFRICAN ACANTHACEJX. 
11. C. Bunkzi, T. Anders.—Chetacanthus Burchellii, N. ab E. in DC. 
l. c. p. 462. 
Hab. Ad ** Thaba Unce " in Africa australi, ad lat. 31? austr., Burke! 
in herb. Hook. 
Nees von Esenbeck named this species after the traveller Bur- 
chell, who he supposed had collected it. This, however, was an 
error, a$ the plant has been found only by the collector Burke, 
whose name therefore it ought to bear. 
12. C. serosus, N. ab E. in DC. l. c. p. 112. 
Hab. Prope flumen Aapges, Burchell; ad Graham's Town in Africa 
australi, in herb. Hook. ! 
IX. RvEuL1, Linn. 
l. R. PATULA, Jacq. Misc. ii. p. 358.—Ruellia matutina, Hochst. et Steud. 
Pl, /Egyp. n. 874.—Dipteracanthus patulus, N. ab E. in DC. xi. p. 126. 
Hab. In Sennaar, Kotschy, n. 119! ; at Elephants! Bay in Benguela, Cur- 
ror! in herb. Hook. 
Distr. In Arabia felici! India orientali! Ceylania ! 
2. R. prostrata, Poir. Enc. Méthod. vi. p. 349.— Dipteracanthus 
prostratus, N. ab E. in Wall. Pl. As. rar. iii. p. 81.—D. dejectus, 
N. ab E. l.c. p. 82. 
Hab. In monte ** Meeramballa " dicto, atque inter Lupata et Sena, prope 
fluvium Zambesi, Kirk! 
Distr. In India orientali! et Ceylania! 
3. R. CYANEA, Bojer in herb. Hook.—Dipteracanthus cyaneus, N. ab 
E. in DC. l. c. p. 121. 
Hab. In insula Madagascar, ad ripas fluminis Chazok, Bojer, n. 120 in 
herb. Hook. ! 
4. R. MoNANTHoOS, Bojer in herb. Hook.—Dipteracanthus monanthos, 
N. ab E. in DC. l.c. p. 125. 
Hab. In regione centrali insulee Madagascar, Bojer ! et Bouton! in herb. 
Hook. 
5. R. Currort, T. Anders. Suffruticosa ; caule erecto, tomento minuto 
dense incano ; foliis ovatis, cordatis, integris, pubescentibus ; pedicellis 
axillaribus, solitariis, unifloris; calycis laciniis corolle tubo dimidio 
brevioribus, glanduloso-pubescentibus, linearibus, acutis; corolla 
magna, tubo elongato, limbo infundibuliformi, lobis brevibus, æqua- 
libus, rotundatis. 
Hab. In Benguela, prope Elephants? Bay, Curror! n.17 in herb. Hook. 
Pedicelli 1 unc. longi. Bractee nulle vel cito decidue. Calyx à-i 
unc. longus. Corolla 3 unc. longa, extus subpubescens, cerulea? 
6. R. THUNBERGIZFLORA, T. Anders. Caule adscendente, inferne 
lignoso, tereti, supra nodos constricto, cortice cinereo, ruguloso, papil- 
lis asperis obtecto, superne herbaceo, 4-angulari, sulcato; foliis 
