Colenso. — On new Phcenogamic Plants. 191 



style, and the stamen much longer ;* but in this plant the 

 opposite is the case, besides its minute, very peculiar, aud 

 angled upper leaves, with their different venation. 



III. I may further observe that the finer specimens of this 

 plant I found growing on the land in the woods, and not in 

 watery places or in water ; and when found in water the tips of 

 the upper branches did not possess that crowded sub-rosulate 

 appearance which is so common with C. vema. 



Order XXXIIL— UMBELLIFER^l. 

 Genus 1. Hydrocotyle, Linn. 



1. H. eclrinella, sp. nov. 



Plant rather small, 5-6 inches long, procumbent, straggling, 

 weak, branched ; stems (and peduncles) compressed flat ; the 

 whole plant hairy; hairs on stems curved, hyaliue, sub-jointed : 

 on leaves, strigose, thick, white. Leaves few, distant, scattered, 

 orbicular, I inch diameter, with a large spreading basal sinus, 

 sub-rnembranaceous, dark-green, 4 - 6-parted ; nerves 6, seg- 

 ments broadly obovate-cuneate, cut half-way to base, their 

 sinuses open, rounded, margined; each segment sub-3-lobed ; 

 lobes 3-4-toothed; teeth acute, mucronulate. Petioles 1-1^ 

 inches, slender, filiform, flexuous. Stipules small, sub-orbicular, 

 membranous, nerved, laciniate-toothed ; teeth erect, acute, and 

 mucrouate. Peduncles very much longer than leaves, very 

 slender, flexuous, weak, 3 inches long ; pedicels sub-20, 1^ lines 

 long, slender, patent. Involucral leaves many, small, narrow 

 lanceolate, mucronate. Fruit small, orbicular, sub ^ line dia- 

 meter, turgid, slightly cordate at base, brownish, densely echi- 

 nate ; carpels with one prominent rib on each face, their back- 

 edge obtuse and partly concealed with the echinate hairs ; styles 

 long, divergent. 



Hah. Among herbage, woody glen, base of Mount Tonga- 

 riro, County of East Taupo ; 1887 : Mr. H. Hill. 



Obs. I. This little species differs considerably from all its 

 known New Zealand congeners (and from all others known to 

 me) ; the great length of its filiform peduncles and their being 

 (together with the stems) compressed flat, and its densely echi- 

 nated fruit, are peculiar aud conspicuous characters, as also its 

 leaves and stipules, in their many sharply acute mucronate teeth, 

 and the margined sinuses of the leaves. 



II. Unfortunately I have had but one imperfect specimen 

 without flowers, and that not in very good condition, to examine ; 

 and I should not care to describe the plant were it not for its 

 striking characters. 



* " Stigmas 2, long, filiform ;" I.e., vol. iii., p. 64. 



