42 THE FLORA OF THE ALPS 
&. Capitules usually numerous, in terminal cymes; 
involucral bracts in a single row, with one or two outer 
rows :—H. humile, Jacq.; lacerum, Reut.; Tvrachselia- 
num, Christ; ceszum, Fr.; Schmidtiz, Tausch.; atratum, 
Fr.; rupicolum, Fr.; alpestre, Griseb.; canescens, Schleich. ; 
porrectum, Fr.; pseudoporrectum, Christ; Epimedzum, 
Fr.; jurassicum, Fr.; mactlentum, Fr. 
F. Root-stock without stolons ; radical leaves withered 
at the time of flowering; stem leafy:—/. znutybaceum, 
Wulf. ; valestacum, Fr.; macrocephalum, Hut.; pecrotdes, 
Vill. ; ochroleucum, Schleich.; valdepilosum, Vill.; stric- 
tum, Fr.; perfoliatum, Frol.; prenanthotdes, Vill.; dentz- 
culatum, Sm.; umbellatum, L.; gothicum, Fr. 
Several of the common English species, which occur 
also in Switzerland, are not mentioned in the above list ; 
as HY. murorum, L. (including pallidum, Fr.), nearly re- 
lated to H. cesium; H. sylvaticum, Fr. (including va- 
gatum, Fr., and ¢ridentatum, Fr.), nearly related to 
gothicum ; and H. boreale, Fr. (sabaudum, Sm.). 
The number of species of Wzeraccum named by Philippi 
as natives of the Pyrenees is 31; the mountain species 
are mostly the same as those of the Swiss Alps, but the 
number of forms is not so large. 
68. CHLOROCREPIS, Griseb. 
Resembling //zeractum, but pappus white, soft, and 
flexible. 
C. staticifolia, Griseb. (Hzeractum  staticifolium, 
Griseb.); flowers light yellow, capitules 1-3, stem leaf- 
less, radical leaves bluish-green, glaucous, linear-lan- 
ceolate ; Switzerland, Jura, Dauphiny. 
