OiiDER 138.— THE ORCHIDS. 309 



f Leaves all green. Lip obtuse, erect. Ladies"- Tresses. Spiraj^'thes. 5 



f Leaves netted witn white. Lip pointed, reflexed. 



Rattlesnake Piantain. Goodye'ra. 



f Lvs. all green. Lip 3-lobed, recurved. South. Granichis. Poutuieva. 

 g Lip on the upper side of the fl., bearded. Leaf linear. Grass Pink. Calopo'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. 7";'^ 6>/'<:A/6-. Epiden'urum. 



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 (which 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-purple 1 



1 Stem leafy. Flower one or more 2-4 



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

 and 1 large flower at top. c. 

 2 O. can^didum. White L. Two lower sepals united. Flowers 1 only, smaller, 



white. W. S. r. 

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



purplish, c. 

 4 C. Arieti'num. Eani's-Head L. Two lower sepals separate. Flower 3 only, 

 small, purplish, r. 



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



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



6 C. parviflo'rum. Smaller yellow L. Sepals ovate-lanceolate. Lip fiat above and 



below, 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 gene/ally showy, in spikes or racemes. June- Aug. vwstly. 



NoTK.— Under this genus »ve include two others, viz.: Gyinnadenia and Platanthera. Tht 

 beginner would find it difficult to separate them. See Class Boole of Botany, p. 6S2, &c. No. I 

 is the true Orchis. Nos. 8, 9, 10, are Gymnndenia, and all the others belong to Platanthera. 



