200 LXX. COMPOSITE. 
SuBTRIBE 6, CaALENDULEX. (Gen. 120-124.) 
120. DIMORPHOTHECA, Vaill. 
Heads radiate ; rays ligulate, female ; disk-flowers 5-toothed, 
either all abortive or all bisexual, or (more usually) the outer 
ones bisexual, inner male, with abortive style and ovary. In- 
volucre 1-seriate, of linear, acuminate scales.” Receptacle 
flat, becoming convex, nude or with a few deciduous palez. 
Style of the fertile disk-flower shortly 2-fid, the arms diverging, 
round-topped, glandular at margin and piliferous externally ; 
of the female ray-flowers with long, glabrous arms. Achenes 
without pappus, straight, those of the ray wingless, obconie, 
3-cornered, tuberculated or sharply toothed, rarely smooth ; 
of the disk flattened, with marginal, thick, wide wings.— #7. 
Cap. iii. p. 417 (including Acanthotheca, DC. !). 
Herbs or undershrubs, very often viscid and glandular. Leaves alternate, 
toothed lobed or pinnate-parted, rarely entire, often scabrid. Heads ter- 
minal, solitary ; disk-flowers yellow brown or rarely purple; rays white 
with purple underside, or purple or yellow. —20 species, dispersed. 
121. TRIPTERIS, Less. 
Heads many-flowered, monecious, .radiate; rays ligulate, 
female ; disk-flowers 5-toothed, bisexual, but sterile. Invo- 
luere 1-2-seriate, the scales free, often membrane-edged. Re- 
ceptacle nude, flat. Anthers minutely setose. Styles of ray 
2-fid; of disk undivided. Achenes of ray 3-cornered, the 
angles produced in mostly unequal wings, the sides smooth or 
echinate, straight, substipitate, beaked, the beak hollow, on 
one side closed with a hyaline membrane.—/7. Cap. ili. p. 424. 
Herbs, undershrubs or rigid shrubs, mostly glandularly viscid and strongly 
scented. Leaves opposite or alternate, entire or toothed or cut. Heads 
panicled or terminal, solitary. Rays yellow white or purplish.—27 species, 
dispersed . 
122. OLIGOCARPUS, Less. 
Heads few-flowered, monecious ; rays ligulate, female ; 
disk-flowers male. Involucre 1-seriate. Receptacle nude. 
Achenes of ray sessile, polymorphous, terete or 3-gonous, 
scabrous or smooth, or ridged and pitted, wingless or minutel 
3-winged, beaked or nearly or quite beakless, the beak either 
solid and horn-like, short and knob-like, or hollow and cup- 
like !—#V. Cap. iii. p. 483. 
A small, many-stemmed, hairy and glandular annual. Leaves alternate. 
Fruit varying as above, often on the same root !—Dispersed, but commoner 
in the Hastern district. 
