Kirk. — On Pleurophylliuu. 433 



unequal. The scapes and pedmicles are clothed with white 

 tomentum. Sir Joseph Hooker arranged the species in two 

 di\'isions : — • 



A. JRadiatum. — Eay-Horets with elongated corollas, 3- 



toothed at the apex. Principal nerves of the leaf 

 straight, stout. Plenrophyllnm vcrum. 



B. Discoidciim. Eay-florets with abbreviated corollas, 



bifid, trifid, or tripartite. Principal nerves following 

 the outline of the lc?af, slender. Pachythrix. 



A. Eadiatum. 



1. PleuTophyllum sj^eciosinii. Hook, f., Fl. Antarct., i., 31, 



tt. 22 and 23. 



Leaves all radical, 6in.-18in. long, 5in.-10in. broad, ap- 

 pressed to the ground, forming a huge rosette, broadly ovate, 

 or obovate, or unequally rhomboid, rounded at the apex or 

 shortly acuminate, thick when fresh, strongly ribbed, ribs 

 straight and extending the entire length of the leaf, loosely 

 tomentose below, villous or setose above, the bristles being in- 

 termixed with moniliform hairs. Eacemes erect, with nume- 

 rous linear leafy bracts. Heads liin.-24in. in diameter; disc- 

 florets purple ; rays purple or whitish. Achenes strigose. 



Hab. Auckland and CamiDbell Islands. Sea - level to 

 HOOft. 



A magnificent plant, of which there are two trivial forms r 

 a, with leaves closely appressed to the ground, and with but 

 few beaded hairs or none, ray-florets whitish or purplish-white ; 

 and b, with sub-erect narrower leaves, abundantly clothed 

 with moniliform hairs ; ray-florets of a deep violet-purple. 

 The first is the prevailing plant on the Auckland Islands, the 

 second on Campbell Island. In some specimens a few distant 

 prickle-like points or teeth may be found on the margin of the 

 leaves by close search. 



The remarkably stout parallel ribs, from 15 to 30 in 

 number, give the leaf a plicate appearance, as if it had been 

 folded longitudinally, which is well seen on making a trans- 

 verse section across the middle, and is not found in any other 

 species. The inflorescence may be spiciform with very short 

 peduncles, or lax and open with elongated peduncles which 

 are sometimes Gin. in length ; the bracts are more or less 

 villous or tomentose below, witli a few scattered hairs above, 

 sometimes indeed with a few jointed hairs. Heads from 8 

 or 10 to 20 or more ; involucral leaves linear-acuminate, 

 clothed with scanty hairs or almost tomentose. Eay-florets 

 female, arranged in two or three series, tubular below. 

 Achene strigose ; pappus-hairs in three series, not thickened 

 upwards. 

 28 



