ONAGEACE^. 83 



petioles. Flowers erect. Coma of the seed much lighter in 

 colour. — Common in wet places. 



3. oexoTIIE'RA, L. Evening Fruieose. 

 * Stigma-lobes linear. 



1. (E. bien'nis, L. (Common Evening Primrose.) Stem 

 2-4 feet high, hairy. Leaves ovate-lanceolate. Flowers 

 yellow, odorous, in a leafy spike, opening in the evening or 

 in cloudy weather. Pods oblong, narrowing towards the 

 top. — Waste places. 



Var. grandiflo'ra. Lindl., has petals as long as the 

 calyx-tube. 



Var. muriea'ta, Lindl. has rough-bristly stem and pods, 

 and petals rather longer than the stamens. 



2. (E. albieau'lis, Nutt. Flowers white, changing to 

 rose-colour, nodding in the bud. Stem white, and common- 

 ly glabrous. — N. W. 



3. (E. pu'mila, L. (S mat.t. F,.) Steinlow,5-12 inches high, 

 smooth or nearly so. Leaves lanceolate or oblanceolate. 

 Pods nearly sessile, club-shaped, 4-angled. Flowers pale 

 yellow, opening in sunshine. — Eiver and lake margins. 



4. (E. ehFysan'tha, Miohx. Distinguished from the pre- 

 ceding by the orange-yellow flowers, and pedicelled pods, the 

 latter scarcely wing-angled. — Drier ground than the pre- 

 ceding. 



* * Stigma discoid. 



5. (E. serrula'ta, Nutt. , var. Douglasil, Torr. and Gray. 

 A low and slender plant, with linear to lanceolate leaves. 

 Calyx-tube broadly funnel-form. Petals obovate. — N.W. 



4. GACRA, L. 



G. eoeein'ea, Nutt. Hoary and very leafy, 6-12 inches 

 high. Flowers small, in simple spikes. — N. W. 



5. HIDWIG'IA, L. False Loosestrife. 

 1. L. palUStris, Ell. (Water Purslane.) Stems creep- 

 ing in the mud of ditches or river margins, smooth. Leaves 

 opposite, tapering into a slender petiole. Flowers sessile, 

 solitary, usually without'petals. Pod 4-sid6d. 



