30, 31.] 



THE FLORAL ENVELOPES. 



37 



blance between the limb and the leaf. It is ovate, 

 oval, lanceolate, obcordate, orbicular, etc. In margin 

 it is generally entire. (See 308.) 



89. Some peculiar forms, however, should be noticed, 

 as the bilobate petal of the Chickweed (44), the pin- 

 natifid petal of Miterwort (43), the inflected petal of 

 the Umbelliferse (42), the fan-shaped petal of Pink, the 

 fringed (fimbriate) petal of Campion (Silene stellata) 

 (40), the hooded sepal of Napellus (29), the saccate 



Forms of petals. -39, Buttercup, showing the scale at base. 40, Mignonette, fringed at top. 41, Silene 

 stellata, fringed and unguiculate. 42, Flower of Osmorhiza longistylis, petals inflected. 43, Flower ot 

 Mitella diphylla, petals pectinate-pinnatifid. 44, Petal of Cerastium uutans, 2-cleft. 



petal of Calceolaria, Cypripedium (71). The limb is, 

 moreover, often distorted into a true nectary, spurred 

 (see 78), or otherwise deformed, as in Napellus, 

 Coptis, etc. 



90. We have seen that the floral organs are often 

 in various ways united. A calyx with its sepals united 

 into a tube or cup was formerly said to be monosepal- 

 ous, and a similar corolla was called monopetalous ; 

 gamosepalous and gamopetalous are now substituted 

 for those words. Polysepalous - is applied to a calyx 

 with distinct sepals, a corolla with separate petals is 

 polypetalous. 



Gamosepalous and gamopetalous have in Germany given place to the more 

 appropriate words synsepalous and sympetalous. 



Polysepalous and polypetalous have also been superseded by the more accurate 

 terms aposepalous and apopetalous. 



