Herriott. — Plants from the Southern Islands. 415 



This plant, as Dr. Cockayne points out, differs very consider- 

 ably from the type, Astelia linearis, which Hooker (1867) describes 

 as follows : " Leaves spreading, 1 in. to 6 in. long, narrow, 

 linear, acuminate, keeled, margins recurved, silky and villous 

 at the base " (p. 284) ; and Dr. Cockayne further adds, " that 

 midrib and edge of leaf are covered with adpressed brown chaffv 

 hairs " (p. 266). 



Hab. — It occurs on both Auckland and Campbell Islands, in 

 semi-bog formations. 



Anatomy (figs. 25a, 256). — The leaves are linear, glabrous, 

 solid and cylindrical for the greater part of their length, but split 

 down near the base along the line of colourless parenchyma cells. 

 Fig. 25a is a section through the upper solid portion, while 

 fig. 256, which is much larger in proportion, is through the lower 

 crescent-shaped portion of the leaf. The colourless parenchyma 

 is on the upper surface ; the leaves are here represented upside 

 down. 



Fig. 25a : A cuticle (cut.) may be distinguished above the 

 epidermal cells, frequently interrupted by stomata (st.). The 

 epidermal cells are more or less rounded or cubical in shape. 

 The chlorenchyma (chlor.) is not differentiated, but consists of 

 a mass of rounded cells densely filled with chlorophyll except 

 on the upper surface of the leaf, where it is interrupted by a 

 wedge-shaped mass of colourless thin-walled parenchyma cells, 

 which probably acts as water-storage tissue. The number of 

 vascular bundles (v.b.) varies. There may be one, two, or three 

 at different heights in the leaf. The bundle is surrounded by a 

 well-defined endodermis (endo.). 



Fig. 256 differs in the position of the colourless parenchyma 

 tissue (par.), which here forms a layer two cells in thickness 

 along the greater part of the upper concave surface of the leaf. 

 There are always three bundles in this region. In both cases 

 raphides are present in certain of the chlorophyll-bearing cells, 

 and anthocyanin is sometimes found in the epidermal cells. 



Luzula crinita, Hook. f. 



" Leaves flat and grass-like, with long white hairs on the 

 margins and sheaths towards the base, T V in. to | in. broad."* 



Hab. — " Lord Auckland Group and Campbell Island : in the 

 former locality it is found only near the tops of the hills, at an 

 altitude of 1,200 ft. to 1,400 ft. ; more abundant in the latter, 

 from the sea to an altitude of 1,200 ft."f 



It is found on most of the Southern Islands — Lord Auck- 



* Hooker (1867), p. '293. 



| Hooker (1847), vol. i, p. 84. 



