DAISY, DANDELION, AND THISTLE FAMILY 



425 



intended "to keep the cold out," but also to protect it from 

 loss of heat by excessive radiation, to the clear cold skies of 

 winter.* 



Genus Gnaphalium. 



Woolly or cottony herbs. Leaves alternate. Heads small, solitary, fascicled, 

 or in corymbs. Florets all fertile, bracts usually white. Achene small, hairy. 

 Pappus-hairs in 1 series, sometimes united at the base. (Name from the Greek, 

 referring to the wool with which the plants are covered). 10 sp. 



Fig. 147. Gnaphalium trinerve. 



Gnaphalium luteo-album (The Yelloivish-white Gnaphalium). 



Annual or biennial. Leaves narrow, | in. -2 in. long, woolly, the upper ones- 

 without foot-stalks. Heads fascicled, Jin. -Jin. long, yellowish-brown. Bracts 

 shining. Achene dotted with pits. Both islands ; Stewart Island. Fl. Dec.- 

 March. A common weed. 



Genus Raoulia. 



Small, tufted, alpine herbs, often growing in dense masses. Leaves very 

 small, imbricate, often silky or woolly. Heads small, terminal, solitary. 

 *v. Trans., XXXII., p. 150. 



