Hygrophila. XCVIII. ACANTHACES (BURKILL). 33 
ygrop: 
above. Leaves broadly lanceolate, or in the upper part of the stem 
linear-lanceolate, with scattered rough hairs on both surfaces, sessile 
or very shortly petiolate, entire, 24—% in. long and # in. broad. Flowers 
whorled, 4-12 at a node; bracts lanceolate. Calyx-segments linear, 
acute, pubescent, nearly equal. Corolla-tube 5 lin. long; lips about 
4 lin. long, purple, pubescent outside. Stamens equal. Capsule 7 lin. 
long. 
Lower Guinea. Angola: Pungo Andongo; Lombe River and near Bumba, in 
swamps, Welwitsch, 5106 ! 
5. H. Teuczii, Lindawin Engl. Jahrb. xx. 7. Stem quadrangular, 
hispid. Leaves narrowly lanceolate, petiolate, rough with white hairs 
along the veins on both sides, 23 in. long and } in. wide. Flowers 
solitary or few together in the axils of the leaves; bracts lanceolate, 
hairy, 4 in. long. Calyx-segments 5, equal, rather shorter than the 
bracts, hairy. Corolla-tube 7 lin. long, hairy on both surfaces ; lips 
4—5 lin. long, the middle lobe of the lower lip emarginate. Stamens 
very unequal, those of either side of the flower united at the base. 
Style hairy. Ovary hairy, becoming glabrous after the fall of the 
corolla, 10—12-ovuled. 
Lower Guinea. Angola: Malange, in swamps, Jechow, 375. 
6. H. spiciformis, Lindau in Engl. Jahrb. xx. 5. Stem quadran- 
gular, hirsute with spreading white hairs. Leaves oblong-lanceolate, 
narrowed to both ends, entire, very shortly stalked, pubescent on both 
surfaces, 23 in. long and 3 in. wide. Flowers in small whorls, about 6 
to each node; bracts narrowly oblanceolate, ciliate along the margins, 
and with shorter glandular hairs on the surfaces. Calyx-segments 
linear, about 5 lin. long, the posterior slightly longer and broader, 
glandular. Corolla-tube 4 lin. long, pubescent outside; lips 4-5 lin. 
long, the lower deeply divided. Stamens unequal ; filaments of the 
lower pair broadened, and united at the base to the upper pair. Ovary 
pubescent.—Lindau in Ann. Istit. bot. Roma, vi. 68. 
Wile Land. Abyssinia: Gondar, Steudner, 1523. Somaliland: River Dana 
near Aloi, Riva, 517. 
Mozamb. Dist. East Africa: without locality, Fischer, 479! German East 
Africa : Ugogo ; Massweyo, Stuhlmann, 333, Uyanzi; Pungusi, Stuhlmann, 424, 
Muhale stream, Stuhlmann, 461. 
A species very nearly allied to H. odora. 
7. H. odora, 7. Anders. in Journ. Linn. Soc. vii. 22. Stem erect, 
pubescent. Leaves lanceolate, or in the upper part of the stem linear- 
lanceolate, sessile or shortly petiolate, entire, somewhat acute above, 
pubescent on both surfaces, 3 in. long and nearly 1 in. broad. Flowers 
Whorled 4-12 at a node ; bracts linear-lanceolate, pubescent. Calyx- 
Segments linear, obtuse, pubescent, 4 lin. long, 4 lin. broad, the posterior 
longer and twice as broad. Corolla-tube 4 lin. long ; lips 4-5 lin. long, 
Pink, pubescent outside. Stamens nearly equal ; filaments of the lower 
pair not broadened, united each at the base to that of the upper stamen 
VOL. vy. 
