Victorian Plants. 323 



1454. Leaves rather short, quite blunt. 



Partly beset with an appressed whitish close shining 

 vestiture ; leaves small, rigid, broad-linear, nearly flat, 

 on the upper side smooth ; headlets of flowers rather 

 large, almost hemispherical, singly terminating branches; 

 outer involucral bracts brownish ; expansions of the 

 inner bracts bluntish ; some of the marginal flowers 

 destitute of stamens and pappus ; fruits papillular-rough. 



H. obtusifoliuin. 



Leaves rather long, somewhat pointed ... ... 1455 



1455. Headlets of flowers always singly terminating the 



stems or branches. 



Imperfectly beset with interwoven hairlets ; leaves from 

 ovate- or spatular- to linear-elliptical, mostly sessile, on 

 the upper side usually rough from minute rigid hairlets ; 

 headlets of flowers large, almost hemispherical, supported 

 by floral leaves ; involucral bracts white or somewhat 

 rosy-red, shining, the shortened lower bracts gradually 

 passing into the upper ; fruits smooth. ' 



H. leucopsidium. 



Headlets of flowers usually more than one at or near 

 the summit of the stems or branches. 



Never tall, branched only at the summit, densely and 

 extensively beset with somewhat cottony vestiture ; 

 leaves from elliptic- to linear-lanceolar, flaccid ; head- 

 lets of flowers comparatively large, almost hemispherical ; 

 involucral bracts pointed, the outermost densely invested 

 with interwoven hairlets exteriorly ; the expansions of 

 the inner bracts often tinged with rosy-red ; fruits 

 papillular-rough. H. Blandowskiaiium. 



1456. Headlets of flowers singly terminal. 



A desort plant, much branched, beset with glandular or 

 somewhat cottony vestiture ; leaves from elliptic- to 

 linear-lanceolar, mostly claspingly sessile, often recurved 

 along the margin, the upper leaves diminutive ; headlets 

 of flowers small, almost hemispherical ; involucral bracts 

 yellow, shining, ciliolated, acute ; some of the marginal 

 flowers without stamens and pappus ; fruits glabrous, 

 slightly attenuated at the summit ; pappus-bristlets some- 

 what plumously dilated at their summit. 



H. ambiguum. 



Headlets of flowers few or several or many approxi- 

 mated 1457 



