Enhydra. } LXXIII. COMPOSITH (OLIVER AND HIERN). 373 
narrowed ; petiole usually dilated. Capitula 1-4 in. diameter, with 
the spreading involucre 4-3 in. diameter. Bracts of the involucre 
ovate or oval.—H. longifolia, EH. paludosa, and E. Heloncha, DC. Prodr. 
V. p. 637. Cwsulia radicans, Willd. Sp. Pl. iii. 1797. Cryphiospermum 
repens, P. Beauv. Fl. Owar. ii. 25, t. 74. Meyera guineensis, Spreng. 
Syst. Veg. iii. 602. Wahlenbergia globularis, Schum. et Thonn. Guin. 
Pl. 387. 
y, Upper Guinea. Old Calabar, Mann! Fernando Po, Mann! Barter! Niger, 
ogel ! 
cower Guinea. Loango, Soyaux ! 
Widely spread in the East Indies and extending to New South Wales; some 
Brazilian specimens do not seem to differ. 
57, ECLIPTA, L.; Benth. et Hook. f. Gen. Pl. ii. 361. 
_ Capitula heterogamous, radiate. Involucre hemispherical of sub- 
biseriate herbaceous nearly equal bracts equalling the head. Pales of 
receptacle narrow, folded, or of centre of receptacle setiform or 0. 
Ligule of ray-florets small, entire or bidentate. Anther-base entire or 
hearly so. Achenes somewhat angular, minutely tubercled ; pappus 
0 or shortly biaristate.—Herbs, usually strigose or hirsute, with op- 
Posite entire or toothed leaves and terminal or axillary pedunculate 
rather small solitary or geminate heads. 
A small genus of warm regions. 
1. E. alba, Hassk. Pl. Jav. Rar. 528. An erect or decumbent 
scabrid herb, 4-2 ft. high; branches striate or sulcate. Leaves lan- 
ceolate or narrowly elliptical, narrowed at both ends, more or less 
scabrid-punctate, very shortly petiolate, ranging up to 5 by 1 in. 
Peduncles 1-3 together, unequal, slender, ranging up to 23 in., sub- 
erect. Capitula }1 in. diameter, hemispherical. Bracts of the 
involucre ovate, acuminate, strigose-pubescent. Ray-florets small, 
white. Tubular florets 4-dentate at the apex. Achenes usually yuite 
glabrous, minutely tubercled.—E. erecta, E. prostrata, and EH. punctata, 
Linn. Mant. alt. 286; together with the other species in the sect. 
Eu-eclipta, DC. Prodr. v. 490. 
Widely spread in Tropical Africa; we have not seen specimens from either of the 
Central Districts, 
A common weed in warm countries. 
58, SCLEROCARPUS, Jacq. ; Benth. et Hook f. Gen. Pl. ii. p. 364. 
Capitula heterogamous with few neuter ray-florets, or homogamous, 
a” tubular and fertile. Involucre of few leafy bracts equalling or ex- 
ceeding the head. Pales of receptacle cymbiform sheathing the florets. 
crolla of disk tubular, short or elongate, 4-5-toothed. Anther-base 
entire or minutely apiculate. Achenes narrowed below ; pappus 0 or 
" Feduced to a minute annulus,—Erect scabrid herbs with alternate or 
