40 



ONAGRACE^E. 



Epilooium paniculatum. 



EPILOBIUM. 



E. rigidum, Haus&knecht. Cespitose perennial, a span or 

 two high: leaves lanceolate to obovate, acute, entire, often 

 oblique, narrowed into short-winged petioles, very glaucous; 

 flowers in the axils of the small upper leaves which are often 

 adnate to the bases of the peduncles: ovary densely white-glan- 

 dular: petals 7-10 lines long: stigma very large. S. W. Oregon, 

 as is also the var. canescens. which is densely velvety-canes- 

 cent. 



E. palustre, Linn. Perennial, a foot or less high, canescent 

 above with incurved hairs: leaves mostly opposite, evidently 

 veined, narrowly oblong, obtuse, or almost truncate: flowers 

 small, the calyx-tube funnelform: stigma club-shaped. State of 

 Washington. 



E. adenocaulon, Hausskn. Perennial. Branches upcurving, glandular-hairy 

 above; leaves elliptical to ovate-lanceolate, slightly serrulate, rather pale green and 

 glossy: flowers 2 or 3 lines broad: stigma club-shaped. 



E. Calif or nicum, Hausskn. Taller than the preceding, inflorescence and buds 

 white, with long ascending hairs: leaves often 3 or 4 inches long, lanceolate, remotely 

 serrulate: flowers few, 2 or 3 lines broad: slender fruiting peduncles sometimes equal- 

 ing the leaves. 



E. brevistylum, Barbay. Slender* a foot high: leaves opposite, ovate or elliptical, 

 an inch long or more: flowers 2 lines broad: pods 2 in. long. 



E. ursinum, Parish. A foot high or less, slender, hairy below, minutely glandular 

 above: leaves mostly opposite, about an inch long, ovate to broadly lanceolate, serrate: 

 flowers white or lavender, 2 lines broad: pods 15 lines long on peduncles half as long. 



E. Hornemanni, Reich. A span or two high, slightly hairy above; leaves an inch 

 long, elliptical, ovate, obtuse: flower 3 or 4 lines broad, lilac to violet: pods about 2 

 inches long on peduncles equaling the subtending leaves. 



E. Oregonense, H;iusskn. A span high, with flowerless shoots at the base: leaves 

 8-12 lines long, crowded below, remote, and very small above, oblong to linear obtuse : 

 flowers 3 lines broad, violet: pods 2 inches long on peduncles nearly as long. 



E. clavatum, Trelease. A span high, densely cespitose, glabrous: leaves divergent: 5- 

 10 lines long, broadly ovate, very obtuse: flowers 2 lines broad, rose color: pods an in. long. 



E. holosericeum, Trel. Rather woody, loosely branched, upper leaves and branches 

 canescent, with sub-appressed hairs: leaves oblong lanceolate, remotely serrulate; 

 flowers pale, 2 lines broad: pods 2^ inches long on peduncles 6 lines long. 



GAYOPTYUM. 



G. lasiospermum, Greene. Erect, very slender, 1 or 2 feet hiyh, with numerous 

 dichotomous branches: corolla 1| lines long, rose color: seeds canescent, with appressed 

 silky hairs (hence the name). San Diego Co., northward. 



