ORDER 52. EVENING PRIMROSES. 21 1 



* Mowers ? parted, with 2 sepals, 2 petals, &c f 



* Flowers 1-parted, with 1 stamen, 1 pistil, 1 seed (no petal) h 



2 Flowers perfect (that is, having both stamens and pistils) 3 



2 Flowers monoecious (some with stamens, some with pistils).. . .o 



8 Stameis 8, twice as many as the sepals 4 



8 Stameas 4, same number as tue sepals. . . .d 



4 CuJyx tube much prolonged above the ovary. . . .5 



4 ( alyx tube not prolonged above the ovary a 



5 Garden exotics, with showy purple flowers. . . .0 



5 "Wild, native herbs, rarely cultivated b 



a Seed comous with a tuft of silky hairs. Fls. purplish. Willm Herb. EPILO'BFCM. 1 

 a Seed not cornous, &c. Fls. large, yellow. Southern. Yellow Jessie. JUSSLE'A. 

 b Petals equal, not clawed, yellow. Pods oo-seeded. 



Evening Primrose. (ENOTHE'RA. 2 



b Petals hardly equal, clawed, red. Pods 1-4-seeded. Gaura. GAUKA. 



c Herbs from California. Calyx tube short. Petals clawed. Glarkia. CLAK'KIA. 



c Shrubs from Chili. Gal. tube long, enlarged. Fls. hanging. Ear-drop. FUCH'SIA. 



d Petals yellow, sometimes minute or 0. Lvs. entire. Seeti Box. LUDWIO'IA 



e Petals greenish or none. Leaves many-cleft. Water-plants. 



Water Milfoil. MYRIOPHYI/LUM. 



f Delicate herbs with small, pale flowers. Enchanter's N-ightshade. CIRCJE'A. 8 

 g Small herbs in wet places, with pinnatifld Ivs. Mermaid Weed. PROSERPINA 'CA. 

 h In water, rare. Leaves linear, whorled. Mare's Tail. HIPPU'RIS. 



1. EPILO'BIUM. Willow-herb 



Calyx tube not prolonged above the ovary. Limb deeply 4-parted, de- 

 ciduous. Petals 4. Stamens 8. Stigma often with 4 spreading lobes. 

 Ovary and capsule linear, 4-cornered, 4-celled, 4-valved. Seeds crowned 

 with a tuft of long hairs. 11 Flowers purplish or white. 

 E. angnstifo'lium. Narrow-leaved Willow-herb. Hose-buy. A tall, showy herb (4- 

 6f. high), common at the North. Leaves narrow-lanceolate, nearly entire, with 

 a vein running along the margin. Flowers large, all parts pale purple or white, 

 in a long, terminal spike. Style and stamens declined. Stigma with 4 long 

 lobes. July, Aug. Our four other species, with small flowers, and a club- 

 shaped, undivided pistil, we omit. 



2. (ENOTHE'RA. Evening Primrose. 



Calyx tube prolonged beyond the cvary, deciduous: segments 4, re- 

 flexed. Petals 4, equal, obcordate or obovate, inserted into the top of the 

 calyx tube. Stamens 8. Capsule 4-celled, 4-valved. Stigma 4-lobed. 

 Seeds not tufted. Herbs with alternate leaves, and yellow flowers (in all 

 the following species), J^ay, Aug. 



