682 



BOTANY 



PART II 



shrubby dioecious plants from America. Species of Haastia i^-) are cushiou-shaped 

 plants with woolly hairs in New' Zealand (Vegetable Sheep). 



{h) Iiiulcac resemble the preceding group but have tailed anthers. Involucral 

 leaves frequently dry and membranous. Inula occurs in Britain ; /. hdenium 

 is cultivated. In Gnaphalium, Antennaria (*^), Hciichrysum (Everlastingiflowers), 

 Lco'/itopodium (Edelweiss), Filago, etc., the dry involucral bracts are coloured and 





Fu-: 737.— Tussilafjo Farfara. (After Baii.i.ox.) 



have flat, expanded appendages ; the [lowers are all tubular but the marginal 

 florets are female, the disc- florets hei-maphrodite. Raoulia (*■*) resembles Haastia 

 in habit and in distribution (cf. Fig. 182). Odontospcrmiim j}ygma.cum of the 

 Sahara closes its involucral bracts over the fruits when dry and expands them 

 wlien moistened. It resembles the true Rose of Jericho, the cruciferous jilant 

 Anastatica hierochnntica (cf. p. 592). 



(c) Hcliantheae. Receptacle with floral bracts. Involucral bracts herbaceous. 

 Disc -florets hermaiihrodite, tubular. Ray- florets one-lipped, female, or her- 

 maphrodite. Anthers without tails. Pappus wanting or formed of awns or 



