188 XXXIV. UMBELLIFEEAE. [Hydrocotyle. 



NORTH and SOUTH Islands ; STEWABT Island. Ascends to 2,000ft. Oct. to Feb. Also 

 in North and South America. 



This does not appear to be found north of the Great Barrier .Island. 



Var. heteromeria. Very similar to the type, but the petioles are 2in.-3in. long, the leaves 

 are larger, with a wider sinus, and more distinctly lobed, sometimes glabrate. Tlie umbels are 

 more frequently peduncled, although both sessile and pedunculate umbels may be found on the same 

 specimen. The carpels exactly as in the type. — H. hetermneria, A. Rich., Hydroo. 200; A. Cunn., 

 .Precurs. n. 499 ; Hook, f., PI. N.Z. i. 82 ; Handbk. 86. H. nitens, Ool. in Trans. N.Z.I, xxiii. 386 ; 

 Handbk. 86. H. glahrata, Banks and Sol. MSS. NORTH Island : very local. Three Kings Islands 

 and Bay of Island's southwards. SOUTH Island : Queen Charlotte Sound, Banks and Sol. 



3. H. tripartita, R. Br. ex A. Rich., Hydroc. 69, t. 21 ; t. 61, /. 25. 

 Glabrous. Stems filiform, lin.— 2in. long, often matted. Leaves Jiu.— Jin. in 

 diameter, 3— 5-foliolate ; leaflets cuneate^ 2 -3-lobed, toothed or entire, rarely 

 petiolulate ; petioles -|^in.— 2in. long. Stipules rather large, entire. Peduncles 

 shorter than the leaves. Umbels 2— 5-flowered. Flowers sessile or shortly 

 pedicelled. Fruits rather turgid, slightly rounded, retuse. Carpels with 1 

 obscure rib on each face. — DC, Prod. iv. 65 ; Hook, f., Fl. N.Z. i. 83 ; 

 Benth., Fl. Austr. iii. 341. H. muscosa, Hook, f., Handbk. 86. H. hygrophila, 

 Petrie in Trans. N.Z.I, xxviii. (1895) 552! (name only). 



NORTH Island : Matata, Bay of Plenty, Petrie ! Hawke's Bay, Colenso. SOUTH Island : 

 Nelson: Lake Guyon, T. K. Canterbury: Broken River basin, T. K. Otago: Dunedin and Bluff , 

 Aston I Te Anau and Wanaka Lakes, Taieri Plain, &e., Petrie ! STEWART Island, T. K. Sea- 

 level to 3,000ft. Dec, Jan. 



Specimens from Broken River and Stewart Island have larger and more fleshy leaves. 



4. H. dissecta, Hook. /., Fl. N.Z. i. 84. Hispid or hispid -pilose. 

 Stems slender, 5in.— Sin. long. Leaves alternate or fascicled, |in.— lin. in 

 diameter, orbicular, with a narrow sinus, 5— 7-lobed nearly to the base ; segments 

 obovate-cuneate, acutely toothed or laciniate, hairy on both surfaces ; petioles 

 iin.— liin. long. Peduncles lin.— 3in. long. Flowers 20—30, subsessile. Fruits 

 densely crowded, suborbicular, rounded at base, retuse, turgid. Carpels with 1 

 obscure rib on each face. — Handbk. 86. 



NORTH Island : Colenso. Matakana and Huuua, Auckland, T. ^. SOUTH Island: Catlin's 

 River, Petrie. Oct. to Jan. 



A remarkably rare and local lowland species. Its leaves approach those of S. elongata, while 

 the carpels are nearer to some forms of H. moschata. 



5. H. pterocarpa, F. Muell. in IVans. Vict. Inst. i. (1855) 216. Gla- 

 brous or with few scattered hairs. Stems weak, 6iu.— 18in. long, prostrate.:- 

 Leaves |in.— lin. in diameter, orbicular-reniform, with a narrow or closed sinus, 

 shining, obscurely 3— 7-lobed ; lobes crenate ; petioles lin.-3in. long or more. 

 Peduncles very slender, shorter than the petioles. Umbels 3— 6-flowered. Pedi- 

 cels short. Fruits large, flattened, broader than long, the margins forming a 

 flat wing, broadly emarginate, cordate below, mottled. Carpels with 3 ribs on 

 each side ; margins acute. — Hook, f., Fl. Tasm. i. 153, t. 33; Plandbk. 86; 

 Benth., Fl. Austr. iii. 342. 



NORTH Island: in marshes, Auckland, from Mangoiiui southwards. Wellington: Lower 

 Wairarapa, T. K. SOUTH Island : Nelson. Cheviot, Haast I Feb. Also in Victoria and Tas- 

 mania. 



