| Stems stout, 6–12 in. long. Leaves ¾–2in., obovate-spathulate, crenately 3–5-toothed at the tip. Peduncles short. Heads ⅓ in. diam.; female florets in many series | 14. C. Featherstonii. |
| ** Heads unisexual. | |
| Leaves ½–1½ in., linear-spathulate, quite entire. Peduncles 2–4 in., bracteate. Heads ¼–⅓ in. | 15. C. linearifolia. |
| Leaves ½–1½ in., pinnatifidly cut into 5–8 linear entire segments. Peduncles 1–4 in., bracteate. Heads ⅓–¾ in. diam. | 16. C. pyrethrifolia. |
| Slender, wiry, silky. Leaves ¼–1 in., silky on both surfaces, deeply pinnatifid. Peduncles short, stout, ebracteate. Heads ⅛–¼ in.; females the largest | 17. C. perpusilla. |
| Slender, creeping, 4–12 in. long. Leaves membranous, 1–2 in., deeply pinnatifid, segments incised. Peduncles 1–3 in., ebracteate. Heads ⅙–⅓ in.; females the largest | 18. C. squalida. |
| Stout or slender. Leaves ½–2 in., obovate or spathulate, crenate or lobulate, pinnatifid below. Peduncles longer or shorter than the leaves. Heads ⅙–⅓ in.; females the largest | 19. C. dioica. |
1. C. coronopifolia, Linn. Sp. Plant. 892.—Perfectly glabrous, smooth and succulent. Stems creeping and rooting below, ascending at the tips, branched, 2–10 in. high. Leaves scattered, dilated and clasping the stem at the base, ½–2 in. long, linear-lanceolate or oblong-lanceolate, coarsely toothed or lobed or pinnatifid or entire. Heads bright-yellow, ⅓–½ in. diam., on long slender axillary peduncles exceeding the leaves; involucral bracts linear-oblong, obtuse, membranous. Receptacle slightly convex. Female florets in 1 series, on slender flattened pedicels; corolla wanting; ovary winged, notched at the top; style short, seated in the notch. Disc-florets on much shorter pedicels, very numerous; corolla tubular, more or less dilated at the base, 4-toothed at the tip. Achenes of the female florets oblong, compressed, with a broad spongy wing; those of the disc-florets smaller, with a much narrower wing.—Forst. Prodr. n. 300; A. Rich. Fl. Nouv. Zel. 235; A. Cunn. Precur. n. 443; Raoul, Choix, 45; Hook. f. Fl. Nov. Zel. i. 127; Handb. N.Z. Fl. 141; Benth. Fl. Austral. iii. 549; Kirk, Students' Fl. 322.
Var. integrifolia, Kirk, l.c.—Stems small, 1–2 in., almost simple Leaves linear, entire, obtuse. Peduncle terminal, slender. Head small, ⅙–¼ in. diam.—C. integrifolia, Hook. f. Fl. Tasm. i. 192, t. 50b.
North and South Islands, Stewart Island, Chatham Island: Not uncommon in wet places in lowland districts. October–February.
Widely spread through the south temperate zone; also found in some parts of Europe and North America, but probably naturalised only.
2. C. australis, Hook. f. Fl. Nov. Zel. i. 128.—A slender much-branched flaccid herb 2–6 in. high; branches spreading, prostrate or suberect, more or less clothed with long lax hairs or almost
