84 xcviii. ACANTHACEvE (burkill). [HygropMla. 



of its side. Style hairy. Ovary glabrous, 12-lG-ovuled. — Polyechma 

 odo7'um, Nees in DC. Prod. xi. 83. 



I7pper Guinea. Senegambia : Fonta d'Hiallon, Heudelot, 12 (ex Nees), and 

 without precise locality, Heudelot, 807 ! Sierra Leotie : near Mofari, on the River 

 Scarcies, /Scott-Elliot, 4723 I 



8. H, acutisepala, Burkill. Stem erect, quadrangular, pubescent. 

 Leaves lanceolate, petiolate, scabrid-pubescent on both surfaces, obtuse 

 below, acute above, 2 in. long and 7-8 lin. broad ; petioles of the lower 

 leaves 8 lin. long. Flowers usually G to each node ; bracts oblanceolate, 

 pubescent. Calyx-segments linear-setaceous, pubescent, 5 lin. long, 

 the posterior a very little longer than the others. Corolla-tube 5-6 lin. 

 long, glabrous; lips 5 lin. long, pubescent outside, the lower 3-fid. 

 Stamens unequal ; the filaments of the upper and lower stamen of 

 either side of the flower united at the base. Style hairy. Ovary 

 glabrous, about 20-ovuled. Capsule nearly J in. long, glabrous. 



Wile Iiand. Without locality, Petherick ! 



9. ^. asteracanthoideSy Lindau in Engl. Jahrh. xx. 6. Stem 

 quadrangular, pubescent when young especially at the nodes. Leaves 

 lanceolate, acute, sessile, tapering slightly to the base, pubescent, 2J in. 

 long, 7-8 lin. broad. Flowers in small whorls, usually 6 to each node ; 

 bracts lanceolate, pubescent. Calyx-segments equal, 5-6 lin. long, 

 pubescent. Corolla-tube 5 lin. long, hairy outside ; lips 5-6 lin. long, 

 hairy, the lower 3-fid. Stamens of either side of the flower united at 

 the base. Ovary glabrous, or with a few glandular hairs. Capsule 

 nearly J in. long, 12-seeded. 



Wile ]bancl. Erytrea : OBvc\?iva,,lb(i^h.,Schweinfurth&Riva,2\0Q\ Abyssinia: 

 between Keren and Goiidar, Steiidner, 1498, Tigramme, Rohlf & Stecker. 



10. H. senegaleusis, T. Anders, in Journ. Linn. Soc. vii. 22, 

 Stems erect, quadrangular, glabrous, fully branched. Leaves linear, 

 sessile, entire, acute at the apex and tapering slightly to the base, 

 1-lJ in. long and 1-2 lin. broad, glabrous, or the uppermost sparingly 

 ciliate. Flowers in short spikes at the ends of the branches, 2 at each 

 node; bracts linear, ciliate. Calyx-segments linear-subulate, equal, 

 ciliate. Corolla-tube 3 Un. long; lips 3 lin. long, the lower with 3 

 large teeth. Stamens almost equal ; filaments of the upper and lower 

 of each side united at the base, all slender. Style hairy. Ovary 

 glabrous ; seeds nxnxiQTOMS.—^Physichilus senegalensis, Nees in DC. 

 Prod. xi. 81. 



Upper Guinea. Sahara, Ouillemin! Senegal, Roger, 32 ! Richard! Sene- 

 gambia, Eevdelot, 139 1 Gambia, Brovm-Lester, 12 1 



11. H. csenilea, T. Anders, in Journ. Linn. Soc. vii. 22. Stems 

 much branched from the base, obscurely angled, pubescent. Leaves 

 narrowly obovate, sessile, pilose, 7-10 lin. long, 2-4 lin. broad. Flowers 

 in short terminal spikes, often very small on the lateral branches; 

 bracts linear, scarcely equalling the calyx, ciliated. Calyx-segments 

 3-4 lin. long, almost filiform, ciliate, the posterior slightly longer and 



