Order 138.— THE ORCHIDS. 287 



f Leave.s nil green. Lip obtuse, erect. ^ Ijidie^ Tretses. Spirah'tiies. 5 



f Leaves netted with white. Lip pointed, refle.xcd. 



Rattlesnake Piantain. Goodye'ra. 



f Lvs. all green. Lip 3-lobed, recurved. South. Cranichis. Cran'ichis. 

 g T/ip on the upper side of the fl., bearded. Leaf linear. Grass Pink. CalopC'gon. 6 

 g Lip on the lower side (ovary twisted as in the other genera) h 



h Column free from the lip. Flowers purplish. Beard Pink. Pogo'nia. 7 



h Column growing to the lip. Yellow. On trees. S. Tree Orchis. Epidkn'duum. 



1. CYPRIPE'DIUM. Lady's-slipper. 



The 2 lower sepals united into one piece or rarely distinct. Lip very 

 large, inflated, sack or slipper form, obtuse. Column terminated by a 

 petal-like lobe (wbicb is the sterile stamen). Fertile stamens 2. — Root 

 fibrous. Leaves large, plaited. Flowers large and showy, one or few. 

 May- July. 



* Flowers yellow, one or more. Stems leafy 5, 6 



* Flowers white or rose-pnrple. . . .1 



1 Stem leafy. Flower one or more 2-4 



1 0. acau'le. Stemless L. (Figs. 642-644.) Scape naked, with 2 leaves at the base, 

 and 1 large flower at top. c. 

 2 C. can'didum. White L. Two lower sepals united. Flowers 1 only, smaller, 



white. W. S. r. 

 S C. spectab'ile. Shoioij L. Two lower sepals united. Flowers few, very large, 



purplisli, c. 

 4 C. Arieti'num. Jiain' s-Head L. Two lower sepals separate. Flower] only, 

 small, purplish, r. 

 6 C. pubes'cens. Large yellow L. Moccasin Fl. Sepals narrow-lanceolate. Lip 



flattened at sides, pale yellow, c. (Fig. 89.) 

 C O. parviflo'rum. Smaller yellow L. Sepals ovate-lanceolate. Lip flat above and 

 btlow, bright yellow, c. 



2. ORCHIS. Orchis. 



Flower ringent, sepals and petals similar ; all, or all but two, ascending 

 and arching over the column. Lip turned downward, entire or lobed, 

 produced at base into a spur beneath, which is distinct from the ovary. 

 Stamen 1, anther 2-celled, pollen-masses 2, consisting of numerous waxy 

 grains. — Flowers generally showy, in spikes or racemes. Junc-Aug. mostly. 



Note,— Under this genns we Include two others, viz.: Gymnadenin and Platanthora The 

 beginner would find it difficult to separate them. See Class Book of Botany, p. 6S2, ic. No. 1, 

 le the true Orchis. Nos. 8, 9, 10, are Gt/mnaclcnia, and all the others belong to Platanthera. 



