460 CONTEIBUTIONS FROM THE NATIONAL HEEBAEIUM. 



Stigmas discoid ; plants perennial, 

 woody at the base. 

 Hypantliium tube longer than 

 the ovary; stigma en- 

 tire 8. Galpinsia (p. 465). 



Hypanthium tube shorter 

 than the ovary; stigma 



4-lobed 9. Meriolix (p. 466). 



Stigmas divided into 4 linear lobes. 

 Stamens equal; capsules without 



appendages. | 



Petals white at first, some- 

 times pink-tinged later; 

 seeds in 1 row; buds 



drooping 10. Anogra (p. 467). 



Petals yellow; seeds in 2 or 

 more rows; buds usually 

 erect. , 



Seeds prismatic-angled 11. Oenothera (p. 469). j 



Seeds not angled 12. Raimannia (p. 470). " 



Stamens unequal, the alternate 



ones longer ; capsules winged 1 

 or angled. 

 Ovules and seeds numerous, 

 clustered on slender funi- 

 culi; plants with branch- 

 ing stems 13. Hartmannia (p. 470). 



Ovules and seeds few, sessile 

 in 1 or 2 rows; plants 

 acaulescent, or caules- 

 cent. 

 Plants caulescent, with 



long wiry stems 16. Gaurella (p. 473). 



Plants acaulescent or nearly 



so, with thick stems. 



Capsules distinctly 



double-crested on 



the angles; petals 



white 14. Pachylophus (p. 471). 



Capsules winged or sharp- 

 ly angled ; petals yel- 

 low or white 15. Lavauxia (p. 472). 



1. CIRCAEA L. Enchanter's nightshade. 



Low weak glabrous herb with opposite petiolate leaves and small white reddish- 

 tinged flowers in racemes; hypanthium slightly prolonged beyond the ovary; sepals, 

 petals, and stamens 2; fruit 1 or 2-seeded, indehiscent. 



1. Circaea alpina L. Sp. PI. 9. 1753. 

 Type locality: "Habitat ad radices moutium in frigidis Europae." 

 Range: British America and Washington to New Mexico and Georgia. 

 New Mexico : West Fork of the Gila ( Metcalfe 516) . Damp woods, in the Canadian 



Zone. 



