176 SUMMER FLOWERS. 



(281) Cephalanthera — perianth converging ; lip interrupted, tlie 



basal division saccate, jointed to the recurved terminal 

 one, which is without protuberances at the base ; anther 

 terminal. 



** Anther single, the pollen cohering in grains or masses, 

 which are indefinite in number and waxy. 



X Lip spurred. 



(282) Orchis — perianth ringent, hooded ; lip three-lobed ; pollen- 



masses with two glands enclosed in a common pouch ; 

 anther-cells converging at the base. 



(283) Gymnadenia — as in Orchis, but the glands of the pollen- 



masses naked (without a pouch) ; anther-cells parallel at 

 the base. 



(284) Habenaria — perianth ringent, hooded; lip three-lobed or 



entire ; glands of the stalks of the pollen-masses naked ; 

 anther-cells diverging at the base. 



XX Lip not spurred. 



(285) Aceras — as in Orchis, except that the spur is wanting. 



69. Liliaceous Plants. Liliace^. 



* Stem leafy and branching. 



(286) Asparagus — perianth bell-shaped, tubular below ; stamens 



six ; stigmas three, reflexed ; flowers by abortion, dioecious. 



** Stem leafy and simple, or leafless. 

 t HootstocTc not bulbous. 

 X Flowers purplish. 



(287) Simethis — perianth-leaves spreading, deciduous ; filaments 



bearded ; flowers panicled. 



XX Flowers yellow. 



(288) Narthecium — perianth-leaves persistent \ filaments bearded ; 



flowers racemose. 



