Hygrophila. | XCVIII, ACANTHACEZ (BURKILL). 35 
broader. Corolla-tube 4 lin. long; lips 3-4 lin. long, slightly hairy 
outside. Stamens unequal ; filaments of the lower longer pair broadened, 
slightly hairy. Style hairy. Capsule 4 lin. long, many-seeded.— 
Polyechma ceruleum, Hochst. in Flora, 1841, 377; Nees in DC. Prod. 
x1. 82, 
Wile Land. Kordofan: Gebel el Glet, Pfund, 98! Om Cherene, Pfund, 156! 
White Nile: near Mount Mussa, Kotschy, 310! at El-Ehs, Schweinfurth, 970! Bahr- 
el-Abiad, d’ Arnaud (ex Nees). 
12. H. micrantha, 7. Anders. in Journ. Linn. Soc. vii. 22. 
Spreading plant, much branched; stems hispid with spreading hairs. 
Upper leaves oblong, obtuse, sessile, 1 in. or so long, entire. Flowers 
in whorls at the nodes, the one half of the whorl (2.c. the small inflor- 
escence from the axil of one leaf) 1-few-flowered, the other half 
3—several-flowered ; bracts oblong-lanceolate, obtuse, petiolate, equalling 
the calyx; bracteoles small, subulate. Calyx only divided into. equal 
segments to a little below the middle, hirsute. Corolla white, slightly 
exceeding the calyx; lower lip not rugose-plicate. Capsule 16—20- 
seeded.—Polyechma micranthum, Nees in DC. Prod. xi. 83. 
Upper Guinea. Senegal, Perrottet, 477, 32. Kunth (ex Nees). Senegambia, 
Dagana, Leprieur ! 
Habit in general of H. cerulea; to this species it certainly is most nearly allied. 
13. Hl. ciliata, Burkill. Stem erect, quadrangular, glabrous. 
Leaves ovate, sessile, regularly serrate, glabrous, 1} in. long, } in. wide, 
with 10-12 veins arising from each side of the midrib. Inflorescences 
1-3-flowered cymes arising singly from the nodes. Calyx-lobes 
linear, fringed with hairs along the margins ; dorsal lobe exceeding 
the others, 34 lin. long. Corolla pubescent outside ; tube about 3 lin. 
long; upper lip 2 lin. long; lower a little longer. Stamens nearly 
equal ; filaments of the lower pair broad and with a few hairs. Ovary 
pubescent, with 35-40 ovules.—™ omaphila ciliata, T. Anders. in Journ. 
Linn. Soe. vii. 21. 
Lower Guinea. Congo, Smith, 13! 
14. H. pilosa, Burkill. Stems rather slender, obscurely angled, 
Somewhat pilose. Leaves linear-lanceolate, sessile, entire, tapering to 
both ends, pilose when young, 2 in. long and } in. wide. Flowers 
solitary, or two together, borne on rather long peduncles, a pair of 
Which arise from each node. Calyx-segments pilose, the upper linear- 
lanceolate, 4 lin. long; the others linear, 3 lin. long. Corolla slightly 
pilose outside; tube 3 lin. long; upper lip 2} lin. long; lower a 
ttle longer and marked with orange spots. Stamens nearly equal ; 
filaments of the lower pair broad, almost glabrous. Ovary pubescent, 
with about 20 ovules. 
Mozamb. Dist. British Central Africa: Nyasaland ; Fort Hill, 3500-4000 ft., 
Whyte! North Zambesia ; Batoka Highlands, 3000 ft., Kirk ! 
15. H. linearis, Burkill. Stem weak, ascending, about 18 in. long, 
Tooting at the base, glabrous. Leaves linear, sessile, glabrous, entire, 
