190 XXXIV. UMBELLIFEEAB. [Hydrocotyle. 



Cunn., Precurs. n. 501 ; Hoot, f ., Fl. N.Z. i. 83 ; Handbk. 87. H. compacta, 

 A. Rich., Hydroc. 61 ; A. Cunn., Precurs. n. 500. H. colorata, Col. in Trans. 

 N.Z.I, xviii. (1886) 260. H. capitata, Banks and Sol. MSS. 



Var. laclniata. Leaves Jin. -Jin. in diameter, more deeply cut ; teeth more acute. Peduncles 

 longer or shorter than the leaves. Umbels 5-20-flowered. — H. sibthorpioides, Col. in Trans. N.Z.I, 

 xxi. 83 (not of Lam.). 



From the KBRMADBC Islands and the North Cape to Southland; CHATHAM Islands. 

 Sea- level to 2,000ft. Nov. to March. 



The sparingly hispid or pilose leaves and acute carpels distinguish this from H. Novae- 

 Zela?idiae and H. microphylla. 



9. H. microphylla, A. Cunn., Precurs. n. 496. Glabrous or with few 

 hairs near the apex of petiole and peduncle. Stems slender or rather stout, 

 lin.— 4in. lon^. Leaves -j^in.— J^in. in diameter, orbicular, with a closed or 

 narrow sinus and 5-7 shallow lobes, minutely crenate ; petiole iin.— fin. long. 

 Stipules large for the size of the plant. Peduncles shorter or longer than the 

 petioles. Flowers 2—6, rarely more, sessile or subsessile. Carpels rounded on 

 the back, with an obscure rib on each face, slightly turgid, glabrous. — Hook, f., 

 Fl. N.Z. i. 84^ Handbk. 87. 



Prom Mangonui, NORTH Island, southwards to STEWART Island. Dec, Jan. 



Distinguished by the glabrous leaves, few-fiowered umbels, and carpels rounded at the back, 

 except when young. In some specimens the carpels closely approach those of small forms of 

 H. muscosa, but the leaves are always glabrous. 



10. H. asiatica, L., Sp. Pi. 234. Stems creeping, rather stout. Leaves 

 orbicular or oblong-reniform or cordate, rarely truncate at base, almost entire 

 or repand, toothed, glabrous, jin.— lin. long; petioles iin.— 4in. long. Pe- 

 duncles iin.-2in. long. Umbels 2— 4-flowered, rarely 1-flowered. Involucral 

 leaves large, oblong or ovate, glabrous or pilose. Petals imbricate. Fruits 

 broadly truncate at apex, turgid. Carpels with about 3 principal ribs, reticu- 

 lated.— A. Cunn., Precurs. n. 502; Hook, f., PI. N.Z. i. 82; Handbk. 86 ; 

 Benth., Fl. Austr. iii. 346. H. cordifolia, Hook., Ic. PI. t. 303. H. uniflora, 

 Col. in Trans. N.Z.I, xvii. (1885) 239. H. indivisa, Banks and Sol. MSS. 



Prom the Three Kings Islands and the North Oape to STEWART Island. Sea-level to 

 2,500ft. Oct. to March. Also in Asia, Africa, North and South America, and Australia. 



2. AZORELLA, Lamk. 

 Calyx-teeth prominent, usually small, acute. Petals 5, imbricate in bud. 

 Disk confluent with the styles, thick, depressed. Fruit transversely subquad- 

 rate, scai'cely broader than thick or slightly compressed laterally. Carpels 

 angular with 5 ribs, the lateral not close to the constricted commissure. Vit- 

 tae 0. Carpophore simple. Tufted herbs with imbricate or subimbricate leaves 

 forming dense masses, or slender stoloniferous herbs with radical simple or 

 divided leaves. Umbels simple or irregularly compound, with free or co- 

 herent involucral bracts. 



Spboies, about 40, found in Andine South America, Australia, New Zealand, and the 

 Antarctic regions. The Macquarie-Island plant is generally distributed through the Antarctic 

 islands and extreme South America ; the other New Zealand species are endemic. The student 

 should be careful to examine mature fruits. 



