Epilobium. ONAGRACE^. 219 



shortly 4-lobed : capsule short, thick, pedicellate, with comparatively few seeds. — 

 Proc. Am. Acad. vi. 532 ; Earbey, Mon. Epil. ined. t. 3. 



In the Sierra Nevada, from Tulare County northward, at an altitude of 8,000 to 11,000 feet 

 (Brewer, Bolander, Torrey, Midr, Rothrock) ; also in the East Humboldt Mountains, Nevada, 

 Watsmi. A charming alpine species, connecting this section {Chainocnerioii) with the others of 

 the genus. 



E. LATIFOLIUM, Linn., of Europe and Asia, differing from E. ftpicafinn in its short ascending 

 occasionally branched stem, ovat(!-lanceolate somewhat pubescent rather thick and rigid leaves, 

 veins not apparent, very large axillary and terminal flowers on short jjcdicels, and the somewhat 

 erect glabrous style shorter than the stamens, is found from Arctic America to the higher moun- 

 tains in Colorado and })erhaps reaches California. The E. 02}acu,m, Lehm. in Hook. Fl. i. 205, 

 from the banks of the Columbia {Douglas, Scolder), with erect pubescent stem, narrowly lanceo- 

 late leaves, and the flowers of E. latifolium, may be a hybrid between it and E. spicalum. 



E. LUTEUM, Pursh, may be mentioned as our only other allied species, and remarkable in the 

 genus for its large yellow flowers. It ranges from Alaska to Oregon. 



* * Flowers small, petals, stamens, and style erect: stigma clavate or cylindrical : 

 limb of the calyx ^-cleft. 



-s- Herbaceous perennials. 



-i-+ Leaves not strictly sessile : more or less pubescent. 



3. E. WatSOni, Barbey. Hoary-pubescent throughout : roots spreading in raud, 

 with stolons (?) : stems terete, branching, about 18 inches high : leaves oblong- 

 lanceolate (the length thrice the width), denticulate-serrulate, shortly petioled : 

 petals elongated obcordate, comparatively narrow : stigma cylindrical and not ex- 

 panded : seeds granulately furrowed. — Mon. Epilob. ined. t. 6. 



Near the Russian settlement, Sonoma Co. ; only from Russian collectors. The flowers are of 

 medium size. Much resembling £. hirsutimi, Linn., differing in itsf-'smaller petals, cylindrical 

 not expanded stigma, furrowed seeds, and leaves not clasping. 



4. E. coloratum, Muhl. Roots spreading in rich wet soil : stem nearly terete, 

 erect, 1 to 3 feet high, much branched, puberulent : leaves mostly opposite, lanceo- 

 late, acute, on very short petioles, denticulate-serrulate, the veins often reddish : 

 flowers small, purplish : stigma clavate : capsules on short pedicels, slightly pubes- 

 cent. — Barbey, Mon. Epilob. ined. t. 9. 



Throughout the Sierra Nevada, and to the Cuiamaca Mountains (Palmer) ; also northward and 

 eastward through the Northern United States. With better material it is probable that the 

 Pacific form will have to be distinguished from the eastern by the form of the seeds, the glabrous 

 tcetJi of the leaves, &c. 



5. E. alpinum, Linn. Alpine: roots capillary, with occasional fdiform stolons: 

 stems creeping at the base, 2 to 6 inches high, usually with two pul)escent lines : 

 leaves opposite, ovate or ovate-oblong, obscurely denticulate or nearly entire, hardly 

 petioled, glabrous : flower-buds ovoid : sepals hairy, not acuminate : petals pale rose- 

 color, with a few hairs on the outer surface, little longer than the calyx : anthers 

 nearly spherical; filaments broader at base: stigma undivided: capsules long, thick, 

 purple, often partly nodding, as also the top of the plant : seeds rather rounded at 

 the top. 



In the Sierra Nevada ; Westfall's Meadows (Bolander) ; near Soda Sjiriiigs, at 9,000 feet alti- 

 tude, Brever. Throughout the northern part of the continent, as well as Northern Europe and 

 Asia. Distinguished from the following closely allied species by its ovoid buds. 



6. E. origanifolium, Lam. Eoots spreading on the banks of alpine rivulets, 

 with occasional stolons: stem generally simple, terete, with two pubescent lines, G 

 to 12 inches high : leaves mostly opposite, more or less petioleil ; the lower rounded, 

 the middle ones oval and equally pointed at each end, the upper acuminate : buds 

 somewhat angular at the base : flowers large, varying from dark i)urple to pure 

 white : sepals half the length of the obcordate petals : capsules sometimes nodding : 

 seeds rather long-acuminate at both ends, somewhat light colored. 



