Umbellifere. | FLORA OF NEW ZEALAND. 85 
leaves are rounded in outline, or lobed, or partite. Umõels simple, with a toothed cup-shaped or a many-leaved 
involucre. Calyæ five-toothed. Petals without inflexed apices. Styles moderate. Carpels compressed at the back, 
concave or convex, with five ribs, two lateral, two approximated at the suture, and one dorsal.—The New Zealand 
species are hermaphrodite, the American have unisexual flowers, and some Tasmanian ones are dicecious. The 
Antarctic genus, 4zorella, differs from this more in habit than by any characters of the fruit; and I now feel 
satisfied that 4. Ranunculus, D'Urv. (Fl. Antarct. p. 285. t. 98), should be included in Pozoa, and rank very near 
the P. trifoliolata and P. reniformis of Lord Auckland’s Group: these, with the Tasmanian Pozopsis cordifolia 
(Hook. Ic. Plant. t. 859) and the original South American species, form a very natural genus, of which P. coriacea 
and P. hydrocotylifolia have entire involucres. The rest all belong to the subgenus Schizeilema, which I proposed 
(in Fl. Antarct. p. 15) for the species with many-leaved involucres. (Named in honour of Joseph del Pozo, a 
Spanish botanist.) 
1. Pozoa trifoliolata, Hook. fil.; gracilis, glaberrima, pusilla, rhizomate repente radicante hic illic 
folioso, foliis longe petiolatis 3-foliolatis, stipulis membranaceis laceris, foliolis petiolatis obovatis grosse 
lobato-erenatis, pedunculis axillaribus folio multoties brevioribus, involucri foliolis paucis lineari-subulatis 
pedicellis brevibus zequilongis, floribus 4-7 minimis, fructu oblongo 4-gono, carpellis dorso transverse 
oblongis convexis. Hydrocotyle trifolia, Banks et Sol. MSS. et Ic. Tap. XIX: 
Var. B. tripartita ; minima, hic illic rarissime setosa, foliis 3-partitis v. 3-foliolatis, foliolis sessilibus, 
carpellis brevioribus. 
Has. Northern Island. Totara-nui, Banks and Solander. Under large stones on the hills of 
Pauanui, on the Ruahine range, east coast, etc., Colenso. 
A perfectly smooth, slender, creeping plant, very like a Hydrocotyle. Rhizomes 3—6 inches long, leafy, and 
rooting at remote intervals, sometimes giving off slender prostrate stems. Petioles filiform, 1-2 inches long. Leaflets 
three, petioled, obovate, deeply crenate and notched, 4-4 inch long, membranous. Peduneles slender, one-third as 
long as the petiole. Umbel of four to eight, nearly sessile, very minute white flowers, surrounded by an involucre of 
as many subulate leaves. Fruits shortly pedicellate, 1 line long.— The var. 6 is certainly only a minute state of 
this, with sessile leaflets, or even tripartite leaves. It is probably a common but overlooked plant. —PLate XIX. 
Fig. 1, base of petiole and stipules; 2, flower and involucral leaf; 3, young fruit; 4, transverse section of the 
same :—all magnified. 
Gen. III. ERYNGIUM, Tourn. 
Fructus subteres, obovatus, squamatus; carpellis semiteretibus, evittatis, ejugatis, carpophoro per 
totam longitudinem adnatis. Calycis lobi foliolosi, erecti. Petala abrupte emarginata, cum apice inflexo. 
Umbelle in capitula densa ovoidea aggregate. Involueri foliola exteriora radiata ; interiora sparsa, paleacea, 
inter flores mixta. 
One species alone of this extensive South European and South American genus inhabits New Zealand: it is 
also found in Tasmania, and forms a small, rigid, spinous herb, with a stout root, radical leaves, and long prostrate 
stems, thrown off like scions, which bear leaves and flowers here and there, but do not root. Flowers very minute, 
dispersed in many deformed umbels, which are collected into dense heads, surrounded by a radiating involucre of 
subulate spinous leaflets; the leaflets of the partial involucre are similar, but smaller, and scattered amongst the 
heads. Oaly« limb of five erect leaflets; tube covered with chaffy scales. Petals obcordate, bilobed, with a flat 
inflexed lamina, as long as the petal, and lacerate at the apex. Stamens long, incurved. Mericarps semiterete, 
without vittee or ribs. (Name, epvyyıov, of Dioscorides.) 
1. Eryngium vesiculosum, Lab.; glaberrimum, foliis radicalibus longe petiolatis lanceolato-oblongis v. 
linearibus acuminatis argute grosse ineegualiter spinoso-dentatis subpinnatifidisve, surculis prostratis 
x 
