132 COMPOSITA (Harv.) [ Wedelia. 
Has. Port Natal, Drege, Gerr. § M‘K. 299. (Herb. D., &c.) : 
A common tropical weed, variable in size and habit, erect or prostrate. Most if 
not all of the so-called species of Helipta seem to be merely varieties of this univer- 
sally diffused plant. 
XL. SIEGESBECKIA, L. 
Heads few-fl., heterogamous; ray-fl. uniseriate, female, ligulate or 
irregular; disc-fl. 3-5-toothed, tubular, hermaphrodite. Jvzol. biseriate, 
the scales covered with gland-headed bristles, the 5 exterior linear- 
spathulate, spreading; the inner ones half-clasping round the ray 
flowers. Rcept. flat, bearing oval-oblong pale wrapping round the 
achenes. Style-branches in the dise-fl. short, somewhat flattened, very 
obtuse. Achen. obovate-oblong, somewhat 4-angled, arching inwards, 
without pappus. DC. Prodr. 5, p. 495. 
Annuals with weak, forked stems, glandular and viscidulous above. ‘Leaves 
opposite, mostly tapering at base into a petiole, ovato-triangular, coarsely toothed, 
pubescent. Peduncles from the forks of the branches, 1-headed, small, yellow. 
Name in honour of Dr. J. G. Sitgesbeck, author of a “ Flora of St. Petersburgh,” 
1736. 
1, S. orientalis (Linn. Sp. 1269); leaves ovate, cuneate at base, 
acuminate at apex, coarsely toothed, the uppermost oblong-lanceolate ; 
outer invol,-scales twice as long as the inner. DOC. l.c. Lin. Hort. 
Clif. t. 23. 
Has. Near Durban, Natal, Gerr. ¢ M‘K. 833. (Herb. D., 8d.) 
A common tropical weed. 1-2f. high, the lower branches opposite, spreading, 
the upper forked. Leaves 5-6 inches long, 2-3 in. wide, thin, sparsely pubescent, 
with 3 principal nerves and laxly netted. Pedune. hairy, 1-14 in, long. Outer 
invol.-scales very narrow, 5-7 lines long. 
XLI. WEDELIA, Jacq. 
Heads many-fl., heterogamous; ray-fl. ligulate, female, in one row ; 
dise-fl. hermaphrodite, tubular, 5-toothed. Jnv. in 2-3 rows, the outer 
scales leaf-like, the inner membranous. Recept. somewhat convex, covered 
with pale. Style branches in the disc-fl. tipped with a short cone. 
Achenes obovate or compressed, beakless with a crown-like or eup-like, 
often substipitate pappus, consisting of concrete, toothed and ciliate 
scales, DC. Prodr. 5, p. 538. 
Suffrutices or herbs, chiefly American; rare in Asia, Africa and Australia. 
Leaves opposite, shortly petiolate, serrate or trifid. Pedicels solitary, terminal, 
often in the forks of the branches. Corolla y . Name in honour of Professor 
Wedel, of Jena, author of many botanical dissertations, 
1, W. Natalensis (Sond.! in Linn. 23, p. 63); herbaceous, very 
scabrous with short, rigid bristles ; leaves subsessile, ovate or lanceolate, 
acuminate or acute, distinctly serrate, 3-nerved, with subrevolute mar- 
gins ; pedunc. about as long as the leaves ; outer scales of the invol. 
ovate, or oblong, leafy, subacute, strigose ; inner smaller, scarious, ciliate; 
achenes compressed, 4-angled, pilose, crowned with a hardened, toothed 
cup. Sond. l. c. 
Has. Port Natal, Williamson! Gueinzius! Dr. Sutherland. (Hb. D., Sd., Hk.) 
2 to 3 feet high, coarse and weedlike. Leaves 2-5 inches long, 1-1 wide, 
variable in form ; sometimes quite lanceolate, when it seems to come very near W. 
Africana, Pers. It is also very near W. calendulacea, 
