Dimorphotheca.]} COMPOSIT (Harv.) 417 
the lobes on each side 2~3, often alternate, subulate, subfalcate ; ray- 
achenes velvetty; rays twice as long as the involucre. 2. euryopoides, 
Drege! in Herb. 
Has. Ezelbank and Dwars R., Zeederberg, Drege! (Herb. Hk.) 
Leaves 2-2} in. long, 14 1. wide; the lobes 4 in. long, very acute. Rays 3 in. 
long, 2 1, wide, 7-striate. DC. says, “leaves 9-11 1. long, flat, pinnatifid, the lobes 
linear-lanceolate,” none of which characters accord with the specimen seen by me. 
2. R. tagetoides (DC. ! in Deless. Ic. Sel. vol. 4, t. 66); leaves terete, 
pinnati-partite, the lobes on each side 5—7, the lowest short and tooth- 
like, upper long, filiform, acute, quite entire or “toothed” (DC.); achenes © 
velvetty; rays 4 times longer than the invol. or longer. DC. Prodr. 6, 
p. 484. 
Has. Sand hills, betw. Packuis & Bredow, Zeederberg, Drege! (Hb. D., Hk., Sd.) 
Stem 5—6 inches long; the peduncle a foot or more. Leaves 3 in. long, the upper 
lobes 5-3 in. long. Rays, fide DC., 14 in. long, 1o-striate. Our specimens are very 
imperfect. 
3. R, othonnoides (DC. Prodr. 6., 484); “leaves terete, pinnati-par- 
tite, the lobes on each side 2, terete, undivided ; ray achenes glabrescent ; 
rays twice as long as the involuere.” D0. J. e. 
Has. 8. Africa, Drege. (Unknown to me). 
“ Leaves uncial, lobes semi-uncial. Rays 3 1. wide, 61. long. Pedunce. 7 in. long,” 
DC. A few leaves, from Drege (in Hb. 8d.) purporting to be of this plant, have lobes 
in 2, 3 or 4 pair: and are otherwise like those of R. tayetoides. 
Sub-Tribe 6. CALENDULEH. (Gen. 120-124.) 
CXX. DIMORPHOTHECA, Vaill. 
Heads radiate, ray-fl. ligulate, female, disc-fl. 5-toothed, either all 
abortive, or all perfect, or (more usually) the outer ones perfect, the 
inner abortive. Jnvol. uniseriate, of linear, acuminate scales. Recept. 
flat, becoming convex, naked or with a few deciduous palex. Style of 
the perfect flowers shortly bifid, the branches diverging, round-topped, 
glandular at the margin, and piliferous externally ; of the fem. fl. with 
long, glabrous branches. <Achenes without pappus, straight, those of the 
ray wingless, obconic, 3-cornered, tubereulated, or sharply toothed, rarely 
smooth; of the disc flattened, 2-winged, the wings thickened, wider 
than the seed. DC. Prodr.6,p.70. Acanthotheca, DC.! 1. c. 73. 
Herbaceous or half-shrubby plants, natives of S. Africa, very frequently viscoso- 
glandular. Leaves alternate, toothed, lobed, or pinnati-partite, rarely entire, com- 
monly scabrous and glandular. Heads terminal, solitary; dise-fl. yellow or brown, 
or rarely purple ; rays either white with purple under surfaces, or purple or yellow. 
The armature of the ray achenes varies so much in different species that I cannot 
adopt Acanthotheca, DC., without dividing the genus into almost as many genera 
as there are species. Name from dis, two; uopdn, shape; and @qxa, here meaning 
the achenes; the achenes are of two forms. 
A. Rays white, or purple, or white above, purple beneath (Sp. 1-9.) 
Perennial. Stems short, simple, tufted, ending in peduncles: 
Disc-achenes obcordate ; of ray mostly abortive (2) nudicaulis. 
Dise-achenes abortive; of ray minutely pubes- 
Otitis: MOON irc ag as ae sew ag. ses) Capnloncems. 
Branching shrubs or suffrutices : 
Dise-fl. with glabrous or sparsely pilose teeth : 
VOL. III, 27 
