308 



THE FLORA. 



Fig. 646. Lady's-slipper (Cypripedium acaule\ whole plant, with Its 2 leaves, scape, and 

 curious flower. 7. Plan of the flower; , sepals (outer circle), the 2 lower united; p, the petals; 

 J, lip (lower petal) ; , the anthers, upper one sterile ; o, the 8-celled ovary. 8. The column oeen 

 roin bi-neath, with the pistil, two stamens, and the leal-like sterile one. 9. Flower and bract ol 

 Jrchis spectabilis. Fig. 650. Its 2 pollen masses exhibited (enlarged). 1. Arethusa bulbosa; / 

 lie flower. 2. Its column enlarged, with its lid-like anther opening, showing its pollen-masses 

 wneath. 



b Fla. in the axils of bracts. Pollen masses 2. Lvs. l-oo. Orchis. OKCHIS. 2 

 b Flowers bractless. Pollen masses 4. Leaf 1 only. Tipula. TIPULA'UI 



j Rootcoraline. Spur growing to the ovary. Lvs. none. Coral-root. CORALLORHI' 



c Root 2 oorms. Spur none. Leaf 1, late, radical. Putty-root. A PLECTRU 



d Flowers 1 only, rose-purple. Lip bearded. Artthusa ARETHU'S 



d Fla. racemed, dark-purple, beardless. (Lvs. or few.) Uletia. BLET 



eLeafl. Lip sagittate. Column minute. Micros'tyliz. MICROS 'TV LIB. 



e Leaves 2, radical. Lip flat, ascending. Column winged. Liparls. LIP'ABIS. 



e Leave? 2, cauline. Lip pendulous, 2-lobed or 2-cle.ft. Tway-blide. LISTKIA 



