82 FLORA OF NEW ZEALAND. [| Umbellifere. 
1. Ixerba õrewioides, Cunn. ; foliis oppositis ternis alternisve linearibus lineari-lanceolatisve coriaceis 
sinuato-serratis glaberrimis, corymbis terminalibus, pedunculis sepalis petalisque sericeo-pubescentibus. 
A. Cunn. Prodr. Hook. Ic. Plant. t. 517, 578. 
Has. Northern Island. Bay of Islands, Cunningham, Colenso. Wellington, Bidwill. Nat. name, 
“ Tawari," Col. 
A pretty tree, 20 feet high or so, which Mr. Bidwill says resembles an Arbutus. Leaves 4 inches long, by 4 inch 
broad, but variable. Flower 11—13. inch broad, white. Capsule inch broad. Seed 4—4 inch long. 
NAT. Orp. XXXVIII. UMBELLIFERAE, Juss. 
Gen. I. HYDROCOTYLE, Z. 
Fructus a latere plano-compressus, biscutatus. Calyeis margo obsoletus. Petala ovata, apice non 
inflexa. Carpella evittata ; jugis 5 filiformibus, v. carinali lateralibusgue obsoletis, 2 intermediis accretis. 
Semen carinato-compressum. Tuvolucrum oligophyllum v. 0. 
Slender, ereeping, often very small herbs, with alternate rounded, lobed or crenate leaves, and axillary long or 
short peduncles, bearing round heads or simple umbels of minute flowers, but comparatively large fruits. Involucre 
few-leaved or none. Carpels laterally compressed (one sometimes abortive). Calyx margin obsolete. Petals 
not intlected at the apex. Styles curved backwards.—A large genus, common to the tropical and temperate 
regions of the whole world. 'The New Zealand species are all small, and to be examined require a simple 
lens, with which the very marked characters of many of the species may be easily recognized. (Name from iõep, 
water, and korvAn, a cup; from the cup-shaped leaf of the European water species.) 
$ a. Peduncles very short. Umbels capitate, almost sessile. 
1. Hydrocotyle Americana, L.; glaberrima, nitens, foliis orbiculari-reniformibus lobatis erenatis, 
umbellis sessilibus v. brevissime pedunculatis 3—5-foris, fructu orbiculari flavido, carpellis utrinque 1-costatis 
altero seepe vacuo hispidulo. Linn. Sp. Pi. Rich. Hydrocot. f. 10. Torrey et Gray, Fl. N. Am. p. 599. 
Haz. Northern Island ; in boggy places. Bay of Islands, Cunningham, Sinclair, Colenso, ete. 
Perfectly smooth, glistening, very delicate. Leaves orbicular, 4-1 inch broad, 5—7-lobed ; lobes blunt, crenate. 
Carpels yellow when ripe, very small, with one rib on each side, one of them often empty and hispid.—This appears 
to be a small state of a rather frequent North and South American plant; the leaves are more lobed and smaller 
than in specimens from the United States; but in these respects agree with Bahia (Brazil) ones. Like all the 
other New Zealand species, it varies extremely in size, depth, and form of the leaf-lobes. 
$ b. Peduncles elongated. Flowers sessile, or nearly so. 
2. Hydrocotyle heteromeria, DO. ; tenella, glaberrima v. parce laxe pilosa, nitens, foliis reniformi- 
rotundatis 5-7-lobatis crenatis, pedunculis petiolis brevioribus, umbella capitata 6—8-flora, carpellis flavidis 
utrinque 1-costatis altero hispido. DC. Prodr.v. 1. p. 66. A. Rich. Flora. A. Cunn. Prodr. H. glabra, 
Banks et Solander, MSS. et Ic. 
Has. Northern Island, Banks and Solander. Bay of Islands and Auckland, Sinclair, Colenso, etc. 
Slender, shining, quite smooth, or with a few lax long hairs on the petiole and peduncle. In all respects but 
the above, and the peduncles being about half the length of the petioles or shorter, it entirely resembles the 
H. Americana, of which it may be a variety. 
3. Hydrocotyle Asiatica, L.; pubescens v. glabrata, robusta, repens, foliis fasciculatis ovato-oblongo- 
v. rotundato-cordatis obtusis sinuato-crenatis v. integerrimis, pedunculis folio brevioribus, involucri foliolis 
