E V EN [NG-PR1 M I U m E I A M I L V. 



335 



much more elongated and lax; lateral spikelets short, or but a single 

 flower in the axils. — Martinez; grade to Napa Soda Springs; Middle- 

 town grade, Mt. St. Helena. 



I). G. lepida Lindl. Stems simple, 1 ft. high or less; herbage 

 puberulent; leaves oblong, | in. long; buds pilose, elliptic-oblong; 

 petals crimson, broadly truncate-obovate, 9 lines long; stigma-lobes 

 purple, oval, ^ to f line long. 



Sacramento and San Joaquin Valleys. May. The var. Arnotti 

 Wats, has thicker and broader glabrous leaves, with one side of the 

 isodiametrical seeds narrowly margined or slightly ciliate. 



8. OENOTHERA L. 



Herbs with alternate leaves. Flowers yellow or white, often turn- 

 ing greenish or reddish. Calyx-tube prolonged beyond the ovary, 

 mostly deciduous, the lobes 4, reflexed. Petals 4. Stamens 8, equal, 

 or those opposite the petals shorter, mostly versatile, sometimes basi- 

 fixed. Capsule membranous to woody, often contorted or spirally 

 coiled, 4-celled, 4-valved, dehiscent, in ours sessile. Seeds many, in 

 1 or 2 rows in each cell, naked. (Greek oinos, wine, and therea, 

 pursuit, name given by Dioscorides to some now unknown plant, the 

 roots of which were eaten to incite desire for wine.) 



Caulescent; calyx-tube much prolonged beyond the ovary, and linear. 

 Flowers yellow; tall biennial; var. grandiftora of . . 1. CE. biennis. 

 Flowers white; low plants. 



Perennial; calyx-tips free in the bud 3. CE. Calif ornica. 



Biennial, calyx-tips not free in the bud 2. CE. trichocalyx. 



Acaulescent; calyx-tube much prolonged beyond the ovary, and filiform; 

 flowers yellow. 



Perennial; leaves ovate or oblong, acute; petals 6 lines long or more . . 



4. CE. ovata. 



Annual: leaves linear; petals 3 to 4 lines long. . . 5. CE. graciliflora. 

 Caulescent; calyx-tube obconic, little prolonged beyond the ovary; flowers 

 yellow. 



Capsule sharply quadrangular, much contorted or spirally coiled; flowers 

 turning greenish; radical leaves in a rosette or tuft. 

 Maritime species; procumbent or prostrate. 



Petals 3 to 5 lines long 6. CE. cheiranthifolia. 



Petals 1 to 2 lines long 7. CE. micrantha. 



Interior species; erect'or suberect; petals 1 line long 



8. CE. hirtella. 



Capsule not contorted or only slightly, linear, terete, % line wide or less; 

 radical leaves none. 



Petals 1 to 2 lines long; anthers innate 9. CE. strigulosa. 



Petals 2 to 3 lines long; anthers versatile 10. CE. den'tata. 



1. CE. biennis L. var. grandiflora Lindl. Biennial, erect, 

 usually simple, 2 to 4 ft. high; herbage canescently puberulent and 

 often hirsute; leaves ovate to lanceolate, 4 in. long or more; calyx- 

 tube 1 to 2£ in. long, the tips free in the bud; petals yellow, 1 to 1£ 

 in. long and quite as broad; anthers versatile, £ in. long; style disk- 

 shaped below the cylindric stigmas; capsule obtusely quadrangular, 

 woody, £ to 2 in. long, the valves with a strong midrib; seed sharply 

 angled, in 2 rows in each cell. 



Sparingly naturalized: Alvarado; Lake Merced; St. Helena; Cal- 

 istoga. May. 



