176 MONOECIA MONANDRIA. [CI. 21. 



Sandy bogs, S. E, of Engl. 1£. 7. Larger in every part. Cal.pale 

 lemon. Pet. deeper yell. 



420. CORALLORRHfZA. Coral-root. 



1. C. inndta, Ophrys cor. 22. 1547. (Spurless C.) Spur of the 

 nectary short, not distinct from the slightly three-lobed lip. 

 Root copiously branched. 

 Marshy woods in Scot, very rare. If.. 5, 6. A span high. Fl.pale, 

 yellowish ; fragrant when dry. 



GYNANDRIA DIANDRIA. 



421. CYPRIPeDIUM. Lady's Slipper. 



C. Calceolus, 1. 1. (Common L.) Stem leafy. Appendage to the 

 column elliptical, obtuse, channelled. Lip somewhat compressed, 

 shorter than the petals. 

 Woods, N. of Engl, very rare. If. 6. \f Lip swollen, large, yellow; 

 the rest of the flower a dark rich brown. 



GYNANDRIA HEXANDRIA. 



422. ARISTOLoCHIA. Birthwort. 



1. A. Clematitis, 6. 398. (Common B.) Leaves heart-shaped. Stem 

 erect. Flowers aggregate, axillary, upright. Calyx unilateral. 

 Thickets, and among ruins. If.. 7, 8. Smooth, If. Fl.pale yell. 



Class XXI. MONOECIA. Stamens and 

 Pistils in separate flowers, on the same 



plant. 



Order I. MONANDRIA. Stamen 1. 



423. EUPHORBIA. Involucrum with numerous barren fl. and 1 



fertile. Barr.fl. Cal. 0. Cor. 0. 



Fert. Fl. Cal. 0. Cor. 0. Caps. 3-lobed. Styles 3, cloven. 

 — N.O. Euphorbiace.*:. 



424. ZANNICHeLLIA. Lnvol. 0. Barrenfi. Cal. 0. Cor. 0. 



Fert.fl. Cal. of 1 leaf. Cor. 0. Germ. 4, or more. Seeds 4, 

 stalked. Stigmas peltate. — N.O. Naiades. 



Callitriche. Chara ? Zostera f Typha minor. 



