Page:Manual of the New Zealand Flora.djvu/238

This page has been proofread, but needs to be validated.
198
UMBELLIFERÆ.
[Hydrocotyle.

distinctly 5–7-lobed; lobes sharply toothed, usually hispid on both surfaces but sometimes glabrescent, firm or almost coriaceous; pedoles rather stout, 1/6–2 in. long, usually pilose above with reversed hairs. Peduncles longer or shorter than the leaves; umbels 5–40-flowered. Flowers sessile or nearly so. Fruits usually densely crowded, minute, 1/201/15 in. diam., red-brown; carpels acute at the back, with an acute keel or ridge on each face.—A. Cunn. Precur. n. 501; Raoul, Choix, 46; Hook. f. Fl. Nov. Zel. i. 83; Handb. N.Z. Fl. 87; Kirk, Students Fl. 189. H. sibthorpioides. Col. in Trans. N.Z. Inst. xxi. (1889) 83.

Kermadec Islands, North and South Islands, Chatham Islands: Abundant throughout, ascending to 2000 ft. November–March.

Closely allied to H. novæ-zealandiæ, but separated by the distinctly lobed leaves, by the lobes being acutely toothed, and by the much smaller crowded fruits, which are sharply keeled on the back.


8. H. microphylla, A. Cunn. Precur. n. 496.—Glabrous or with a few loose hairs on the petioles and peduncles. Stems 1–3 in. long, slender or rather stout at the base, creeping and rooting, often matted. Leaves 1/101/3 in. diam., orbicular-reniform with usually a closed or narrow sinus, 5–7-lobed; lobes shallow, rounded, obtusely crenate; petiole 1/51/2 in. long; stipules rather large for the size of the plant. Peduncles variable in length, longer or shorter than the leaves; umbels 2–6-flowered. Flowers sessile or nearly so. Fruit minute, glabrous, 1/201/15 diam.; carpels rounded at the back, with an obscure rib or groove on each face.—Hook. f. Fl. Nov. Zel. i. 84; Handb. N.Z. Fl. 87; Kirk, Students Fl. 190.

North and South Islands, Stewart Island: From Mongonui southwards, but apparently local. December–February.

Cunningham's original description is not at all good, and without access to his specimens I cannot be certain that the plant described above is the same as his. It differs from H. novæ-zealandiæ in the smaller size, glabrous and more deeply divided leaves, few-flowered umbels, and smaller fruit. From H. moschata it is at once removed by the round-edged carpels.


9. H. asiatica, Linn. Sp. Plant. 234.—Very variable in size. Stems rather stout, much branched, creeping and rootmg at the nodes. Leaves fascicled at the nodes, ¼–1 in. diam., orbicular or oblong-reniform, cordate or almost truncate at the base, sinuatetoothed or nearly entire, glabrous or slightly pubescent; petioles very variable in length, ½–6 in. or more, often laxly pubescent above. Peduncles short, ¼–1 in. long, rarely more; umbels 2–4-flowered; bracts 2–3, broad, ovate. Fruit 1/81/6 in. diam.; carpels with about 3 stout ribs on each face, but often showing the secondary ribs when young, somewhat reticulated, margins obtuse.—A. Cunn. Precur. n. 502; Raoul, Choix, 46; Hook. f. Fl. Nov. Zel.