180 



POLYPETALOUS COROLLAS. 



others, leaving gaps between the united portions. Sometimes the 

 tubular portion is bent, as in Lycopsis ; at other times the limb is 

 curved at its apex, as hi Lamium. 



378. Regular Polypetaiou* Corollas. Among them may be noticed 

 the rosaceous corolla, hi which there are five spreading petals, having 



no claws, and arranged as in the single Eose (fig. 289) and Potentilla; 

 the caryophyllaceous corolla, hi which there are five petals with long 



narrow tapering claws, as hi many 

 of the Pink tribe (figs. 290, 281); 

 the alsinaceous, where the claw is 

 less narrow, and there are distinct 

 spaces between the petals, as hi some 

 species of Chickweed; cruciform, 

 having four petals, often unguiculate, 

 placed opposite hi the form of a 

 cross, as seen hi Wallflower (fig. 

 291), and other plants called cruci- 

 ferous (crux, a cross, andfero, to bear). 

 379. irregular Polypetalous Corollas. The most marked of these 

 is the papilionaceous (fig. 292), hi which there are five petals; one 

 superior (or posterior), turned next to the axis, usually larger than the 

 rest, e, and folded over them in estivation, called the vexillum or stan- 

 dard; two lateral, a, the alee or wings; two inferior (or anterior), partially 



Fig. 989. Polypetaloiis flower of Rosa rubiginosa, or the Sweet-brier. 6, Bract or floral leaf, 

 e t, Tube of calyx, which forms the conspicuous part of what is commonly called the fruit 

 /, c/, cf, cf, Sepals or foliola of the calyx, pppp, Petals, without a claw, e, Stamens attached 

 to the calyx. 



Fig. 290. Polypetalous flower of Dianthus monspessulanus. 6, Bracts, c, Calyx, p p, Petals 

 with their claws, o, approximated so as to form a tube. 



Fig. 291. Cruciferous flower of Cherianthus Cheiri, or Wallflower, e, Lobes of the sepals ; the 

 two external sepals being prolonged inferiorly, so as to form a sort of spur or swelling, p p, The 

 four petals arranged like a cross, e, The four longer stamens, the summits of the anthers being 

 visible. 



