62 



OEGANOGEAPHT AND GLOSSOLOGY. 



and limb, or forming small swellings inside tlie tube {Lychnis Chalcedonica) ; they 

 also sometimes occur in monopetalous corollas. Small scales, placed within and on 



243. Felleborns, 

 Tubular petal. 



244. Nigella. 

 Two-lipped petal. 



244 Ijis. Winter Aconite. 

 Two-lipped petal. 



241. 243. 



Mignonette. Inner and lateral petals. 



246. Columbine. 



Petal ill a hood or 



cornucopia. 



245. Trollius. 



Petal with one lip 



(mag.).. 



247. Aconite. 

 Flower naked, witbout calyx ; 

 petals hooded, pediceUed (mag.). 



the top of the claw, forming a sort of crown around the andrcecium and pistil, are 

 collectively called a corona [coronula, Lychnis dioica, figs. 239, 240 ; Mignonette, 

 iigs. 241, 242). 



The limb of the petal may be entire [Wallflower, fig. 9), or toothed or fringed 

 {Mignonette, figs. 241, 242). 



Petals are generally ^af {p. plana), like the leaves ; but may be concave {p. con- 

 ^ava, Barherry, fig. 238) ; — tubular with entire margins [p. tuhulosa, Hellehorus foetidus, 

 fig. 248) ; — hilahiate {p. hilahiata), or tubular with the mouth two-lipped {Nigella, fig. 

 244 ; Winter Aconite, fig. 244 his) ; — labiate {p. labiata), when the tube terminates in a 

 single lip {Trollius, fig. 246) ; — hooded {p. cuculliformia, Columbine, fig. 246 ; Aconite, 

 fig, 247) ; — spurred {p. calcariformia), i.e, forming a spur or horn {Heartsease, fig. 248 ; 



248. Heartsease. 

 Flower cut Tertically. showing 

 the horn of the lower petal. 



24i>. Lnrk.=:pur. 



Petal in a spur formed of 



four united petals. 



250. Hooket, 

 Flower, 



251, Chelidouium, 

 Flower. 



Larhspwr, fig. 249). Hollow petals, of whatever form, usually enclose at the base a 

 gland which is nectariferous when the flower expands, and the anthers open to shed 

 their pollen. 



The regular polypetalous corolla is cruciform (c. cruciformis), when it consists of 

 four petals placed crosswise {Rocket, fig. 250 ; Ghelidonium, fig. 261) ; rosaceous 



