Eygrophila.'] xcviii. acantiiace.e (burkill). 31 



Flowers 2-10 at each node. 



Flowers in false whorls, the interuodes obvious between 

 them. 

 Stems hispid. 



Leaves f in. broad ; stamens equal . . . ^. H. uliginosa. 

 Leaves ^ in. broad ; stamens very unequal . . b. H. Teuczii. 

 Stems pubescent. 

 Calyx segments unequal. 



Ovary pubescent . . , . . Q. H. spiciformis. 



Ovary glabrous. 



Calyx segments obtuse . . . . 1. H. odoi'a. 



Calyx segments acute . . . . . 8. If. acutisepala. 

 Calyx segments equal . . . . . d. JI. astera- 



canthoides. 

 Flowers forming an apparent spike, hiding the inter- 

 nodes. 

 Calyx divided nearly to the base. 



Stems glabrous, leaves slightly ciliate . . .10. H. senegalensis. 

 iS terns and leaves pubescent . . . . 11. If. co.'.ridea. 



Calyx divided to a little below the middle . . 12. H. micrantha. 



***NoMAPHiLA. Flowers in small cymes, which are remote 

 from the main axis on long peduncles. 

 Flowers small, not exceeding f in. in length. 



Leaves ovate IZ. H. ciliata. 



Leaves linear or linear-lanceolate. 



Stem and young leaves pilose . . . . . 14. ^. pilosa. 

 Stem and young leaves Bcabrid, pubescent, or 

 glabrous. 

 Leaves IJ lin. broad. 



Corolla scarcely 2 lin. long . . . . lb. H. linearis. 

 Corolla 8-9 lin. long . . . . .16.-0. f/racillima. 

 Leaves upwards of ^ in. broad ... 17. H. Uevis. 



Flowers large, more than 1 in. in length . . ,18. H. Gigas. 



1. H. spinosa, T. Anders, in Thwaites, Enum. PI. Zeyl. 22 o. Stein 

 stout, erect, hispid or more rarely glabrous. Leaves oblanceolate, with- 

 out clearly distinct petioles, sparingly hispid on both surfaces, acute 

 above, tapering very gradually to the base, 3-14 in. long, 5-15 lin. 

 broad. Flowers in dense clusters in the axils of the leaves, with stout 

 thorns (usually 6 to each whorl) and many lanceolate or linear bracts. 

 Calyx with the upper sepal 7-9 lin. long, the others shorter and much 

 narrower ; the lower pair fused almost or quite to the apex. Corolla- 

 tube about J in. long, widening abruptly upwards ; lips G-7 lin. long, 

 mauve. Stamens nearly equal, with the filaments of the lower pair 

 broadened, each attached to the filament of the upper stamen of its side 

 at the base. Capsule about 4 lin. long, linear-oblong, 4-8-seeded. — 

 T. Anders, Journ. Linn. Soc. vii. 22. H. longi/olia, Kurz in Journ. As. 

 Soc. 1870, ii. 78; Engl. Hochgebirgsfl. Trop. Afr. ,'587. Barleria 

 longifolia, Linn. Amoen. Acad. iv. 320. B. auriculata, Schumacher, 

 Beskr. PI. Guin. 285. B. macracant/ia, K. Br. (name only) in Salt., 

 Abyss. App. 64. B. heocacantha, Moris in Mem. Acad. Turin, xxxvi. 200, 

 t. 7. Ruellia longifolia, Roxb. Fl. Ind. iii. 50. Aster acantha longifolia, 

 Nees in Wall. PI. As. Rar. iii. 90 and in DC. Prod. xi. 247 ; Wight, 

 Ic. t. 449 ; Lindau in Engl. Pfl. Ost-Afr. C. 367, and in Ann. Istit. bot. 

 Roma, vi. 68. A. auriculata, Nees in DC. Prod. xi. 248 ; A. Rich. Tent. 



