Colenso. — On new Phtenogamic Plant*. 195 



leaves ; heads small, turbinate, spreading, 3 lines diameter, 

 containing sub 20 florets ; pedicels 2 lines long, very stout, 

 woolly with a small bracteole ; wool faint dingy yellowish-white 

 with a tinge of red. Involucral scales in sub 2 series of 8 

 spreading scales, alike, very thick, rigid, oblong, very obtuse, 

 concave deeply grooved, densely woolly without, glabrous 

 within, tips and margins incurved. Pappus white, very short 

 (length of achene), unequal, wavy, irregular, scabrous throughout 

 and not thickened at tips. Achene rather long, 1-J lines, 

 slender, linear, curved, grooved, glabrous, striate, brown. 



Hab. High plains, Waimarino, west side of Mount Tonga- 

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



Genus 13. Raoulia, Hook. fil. 

 1. R. albo-sericea, sp. nov. 



Plant perennial, small, prostrate, 8-10 inches long, spreading 

 stems slender, leafy, woody, reddish-brown, rooting ; roots very 

 long and fibrous ; much and irregularly branched ; branchlets 

 sub-ascending, 1-3 inches high, glabrous. Leaves numerous, 

 close, not imbricate save at tips, opposite, sub-decussately 

 arranged, close and ascending above on branchlets, distant and 

 patent below, linear- spathulate or -rotund, H-2 lines long 

 including petiole, lamina spreading and folded (conduplicate), 

 tips largely rounded, 1 line broad, pure white, silky, the glossy 

 hairs closely adpressed, more so on the outside than on the 

 inside (upper surface), where they only form a small semi- 

 circular spot at tip ; petioles as long as lamina, adpressed, 

 linear, very broad, glabrous, brown, 3-nerved, nerves dark, 

 amplexicaul, their bases overlapping. Heads (few seen) single, 

 terminal on lateral branchlets, small, half-concealed among the 

 leaves. Involucral scales in 2 (sub 3) rows, glabrous, glossy, 

 brownish, 1-nerved, lateral margins hyaline, largely dilated ; the 

 outer linear, tips much and deeply laciniate ; the inner linear- 

 spathulate, tips retuse and emarginate, slightly crenulately 

 notched, recurved, florets few, sub 6-8. Pappus very few (sub 

 8 to achene), white, slender, upper part scaberulous, the lower 

 slightly and distantly so, tips acute. Achene glabrous, minutely 

 striate, olive-coloured, slightly tapering and angular, base a 

 little produced and pointed. 



Hab. On the dry lower slopes of Mount Ngaruahoe (Tonga- 

 riro Range), " altitude 5,800 feet," County of East Taupo ; 

 1887 : Messrs. Hill and Owen. 



Obs. I. This interesting little species belongs to Hooker's 

 1st subsection," and is pretty closely allied to two of his species 

 there described — R. australis and R. munroi (but with more of 

 the habit of a third species, R. tenuicaulis) • it differs, however, 



* " Handbook New Zealand Flora," p. 148. 



