36 xcviii. ACANTUACE.*: (burkill). [Hygrophila. 



acute at the apex, ^ in. long, 1-1 -j Hn. \vdde. Inflorescences of 1-2- 

 flowered cymes arising singly from the upper nodes. Flowers on pedicels 

 about 1 lin. long. Calyx-teeth linear, acute, nearly equal, glabrous. 

 Corolla scarcely 2 lin. long. Ovary with about 14 ovules. 

 Iiower Guinea. Angol.a, Welinitseh, 5772 ! 



IG. H. gracillixna, Burkill. Stem stout, much branched at the 

 base, glabrous, obscurely angled in the thinner branches. Leaves 

 linear-lanceolate, sessile, scabrid on both surfaces, acute or subacute 

 above, rounded below, upwards of 1 in. long, IJ lin. broad. Flowers 

 solitary or 2 together in small cymes arising singly from the nodes. 

 Calyx-teeth linear, scabrid ; the upper 5 lin. long, J- lin. broad, the 

 others 4 lin. long. Corolla-tube 4-5 lin. long, somewhat pubescent 

 outside ; upper lip 3 lin., lower 4 lin. long, with 2 yellow marks on the 

 palate. Stamens nearly equal ; filaments of the lower pair sparingly 

 hairy. Ovary pUbescent. Capsule somewhat pubescent, 4-5 lin. long, 

 containing ^^5-40 seeds. — Nomaphila gracillima, Schinz in Verhandl. 

 hot. Yer. Brandenburg, 1889, lOG. 



Iiower Guinea. Aniboland : Olukonda, common on moist land and in grass by 

 water, Schinz, 7 ! 8 ! 18 ! 



17. H. Isevis, Lindau in Engl, and Prantl, Pflanzenfam. iv. 3 B, 

 297. Stem erect, bluntly angled, clad with very short hairs. Leaves 

 narrowly lanceolate, sessile, entire, acute above, somewhat rounded 

 below, when young clad like the stem with very short hairs, becoming 

 glabrous later, 2\ in. long, \ in. broad. Inflorescences arising as 3-7- 

 flowered cymes for the most part singly at the nodes. Calyx-teeth 

 linear, acute, glandular-pubescent, the posterior nearly J in. long, ^ lin. 

 broad, the others 4 lin. long. Corolla pink ; tube 3-4 lin. long, pubes- 

 cent outside. Stamens nearly equal ; filaments of the lower pair fringed, 

 especially on the lower side, with short, stiff hairs. Ovary pubescent, 

 with about 10 ovules. Capsule 5 lin. long, glabrous. — Nomaphila IcBvis, 

 T. Anders, in Journ. Linn. Soc. vii. 21. 



ITpper Guinea. Senegambia, Heudelot, 197 ! Niger Territory : Nupe, swampy 

 margins of streams. Barter, 1139 ! 1285 ! 



18. H, Gigas, Burkill. Stem 4-5 ft. high, pubescent, obscurely 

 angled in the upper part. Leaves narrowly lanceolate, entire, tapering 

 to both ends, pubescent, the upper 3| in. long and J in. wide. Flowers 

 on 2-3-flo\vered cymes arising singly from the nodes. Calyx glandular- 

 pubescent ; lobes linear-subulate, 4, or in the dorsal sepal 5 lin., long, 

 arising from a basal cup 1 lin. deep. Corolla pubescent outside ; tube 

 8 lin. long, much dilated above; upper lip 7 lin. long; lower slightly 

 longer and with long hairs on the palate. Stamens with filaments of 

 difierent length, those of the lower pair hardly broadened, glabrous. 

 Ovary with 12-14 ovules. 



Mozamb. X>i8t. British (Central Africa : Fort Young, in a damp district. 

 NichoUon ! 



Perhaps BriUantaisia didynama, Lindau in Engl. Jahrb. xxiv. 313, may be this 

 species. It was collected at Lufiro in Nyasalaiid by Captain Descamps. 



