Hydrocotyle.] XXXIV. UMBELLIFEKAE. 189 



6. H. robusta, n. s. Stems as thick as a crow-quill, decumbent, sub- 

 erect, 6in.— 9in. high. Leaves distant, hairy on both surfaces, broadly reniform 

 with a narrow sinus, fin.— lin. in diameter ; lobes 5—7, very shallow, minutely 

 crenate, ciliate, very membranous, pale ; petioles lin.— 2in. long, stout. Stipules 

 broad, obtuse. Peduncles usually about \\n. long. Umbels 8-12-flowered. 

 Pedicels short. Fruits ^in. broad, ^^in. long, emarginate, truncate or slightly 

 cordate at base, very turgid. Carpels with an obscure groove on each face, 

 broadly rounded at the base and faintly keeled, glabrous. 



NOBTH Island : on sandy beaches. Auckland : between Waiwera and Mahurangi. Great 

 Barrier Island : Port Trypheua, Blind Bay, Haratoanga. Dec, Jan. 



This species is advanced with some hesitation, as, although very different from U. Novae- 

 Zelandiae in appearance, it is not easy to find good speoifio characters. In addition to the stout 

 erect habit and large uniform leaves, it differs notably in the remarkably broad and turgid fruits, 

 which are obscurely grooved, broadly rounded at the back, and faintly keeled. 



7. H. Novae-Zelandiae, DC, Prod. iv. 67. Pilose or glabrate. Stems 

 branched, filiform, intricate or matted. Leaves distant, lin.— fin. in diameter, 

 membranous, orbicular-reniform, usually with a wide sinus, obscurely 5— 7-lobed 

 or angled, obscurely crenate, glabrate or sparsely hairy on both surfaces ; 

 petioles ^in.— 3in. long, slender. Stipules usually large, broad, entire. Peduncles 

 shorter than the petioles. Umbels 5-12-flowered. Pedicels short; bracts acute. 

 Fruits glabrous, -^-^va.. broad, j^^in. long, slightly compressed, rounded on the 

 back. Carpels with 1 obscure rib or furrow on each face. — A. Cunn., 

 Precurs. n. 497; Hook, f., Fl. N.Z. i. 83; Handbk. 86. H. dichondraefolia, 

 A. Cunn., Precurs. n. 498. H. intermixta, Col. in Trans. N.Z.I, xvii. (1885) 

 240. H. alsophila, Col. I.e. xviii. 261. H. involucrata, Col. I.e. xix. 262. 

 H. amaena, Col. I.e. xxi. 83. H. pilosa, Banks and Sol. MSS. 



Var. lobulata. Leaves very membranous, hairy on both surfaces. Peduncles exceeding the 

 petioles. Carpels with a deep furrow on each face, giving the fruit a 4-lobed appearance, turgid, 

 rounded at the back, mottled. 



Var. montana. E,hizom^s stout, extensively creeping, matted below ; stems short. Leaves 

 orbicular, with a narrow or closed sinus, coriaceous, glabrate ; lobes rounded, very shallow. Peduncles 

 shorter than the petioles. Fruits retuse, cordate at base, slightly compressed, with an obscure groove 

 on each face ; back rounded but thin. 



From the Three Kings Islands and North Gape to STEWART Island. Var. montana ascends 

 to 4,000ft. Var. lobulata, Waitemata. Nov. to March. 



This species is extremely variable in the form of the leaf, the width of the sinus, and the 

 teeth, but the lobes are always shallow. The hairs on the petiole and peduncle are usually reversed. 

 In some forms the carpels are faintly keeled, especially in the young state. I have not seen authen- 

 ticated specimens of Mr. Colenso's plants. 



8. H. moschata, G. Forst., Prod. n. 135. Pilose or hispid, rarely 

 glabrescent. Stems tufted or spreading, slender, 2in.— 12in. long. Leaves 

 iin.— lin. long, broad, reniform or orbicular, with a wide sinus, 5— 7-lobed ; 

 lobes shallow, acutely toothed ; teeth often minute, usually hispid on both 

 surfaces ; petioles Fin.-2in. long. Peduncles longer or shorter than the 

 petioles. Umbels 10-40-flowered. Pedicels usually 0. Fruits densely crowded, 

 minute, rather turgid. Carpels with 1 obvious rib on each face, acute at the 

 back, sometimes faintly reticulate. — A. Rich., Hydroc. 66, t. 60, f. 24; A. 



