ONAGKACEAE (EVENING PRIMROSE FAMILY) 597 



5. E. palustre L. Decumbent, stnloniferous, 1-6 dm. high, the simple or 

 sparingly branched stem minutely pubescent above or glabrate ; leaves thin, 

 green, linear- to oblong-lanceolate, subacute, spreading -ascending, rather re- 

 mote, the middle ones 3-6 cm. long, 4-10 mm. broad ; flowers few ; pedicels 

 much shorter than the slightly pubescent or glabrate pods ; petals pink or white, 

 5-7 mm. long. Bogs and wet banks, Nfd. and Lab. to Alaska, s. to n. N. E. 

 and L. Superior. July, Aug. (Eurasia.) 



Var. Iabrad6ricum Haussk. Dwarf, 6-15 cm. high, often freely branched ; 

 leaves elongate-oblanceolate to linear, approximate, with rounded tips and definite 

 petioles, 1.5-3 cm. long, 1-4 mm. wide; pedicels mostly as long as the pods. 

 Lab. to the alpine regions of the White Mts., N. H, (Greenl.) 



Var. monticola Haussk. Mostly simple, 1-5.5 dm. high ; leaves thick, mostly 

 linear-oblanceolate, obtuse, strongly ascending, remote, the middle ones 1-3 

 cm. long, 1.5-4 mm. wide ; pedicels various. (E. oliganthum Michx. ; E. 

 lineare, var. oliganthum Trel.) Bogs and wet meadows, Nfd. and Lab. to 

 Man., s. to Mass., Pa., and the Great L. region. (Eu.) 



6. E. coloratura. Muhl. Stem erect, not stoloniferous (often developing in 

 late autumn sessile or subsessile basal rosettes'), 3-9 dm. high, usually much- 

 branched, glabrous below, canescent at least in lines above with incurved hairs ; 

 leaves elongate-lanceolate, 5-15 cm. long, 1-2 cm. broad, distinctly short- 

 pctioled, closely and irregularly serrulate; flowers abundant on the divergent 

 branches; petals pink, 3-5 mm. long; pedicels short; seed 1.5 mm. long, 

 abruptly rounded at tip, minutely papillate ; mature coma cinnamon-colored. 

 Low ground, Me. to Neb., and south w. July-Sept. 



7. E. adenocaulon Haussk. Similar in habit, 1-10 dm. high ; stem glabrous 

 below, minutely ftubescent above with more or less incurved pale hairs, sometimes 

 glandular or viscid ; leaves oblong -lanceolate to narrowly ovate, short-petioled 

 or subsessile, rounded or cordate at base, less toothed than in the preceding, 

 the middle ones 2-8 cm. long, 7-30 mm. broad ; seed about 1 mm. long, short- 

 beaked, papillate; coma whitish. Rich damp soil, Nfd. to B.C., s. to Del., 

 W. Va., Great L. region, Neb., Col., and Cal. July-Sept. Var. PERPLEXANS 

 Trel. G-labrous or very sparingly pubescent above; leaves flaccid, gradually 

 narrowed to the distinct petiole. A somewhat local extreme, e. Que. to B. C., 

 s. to N. E., N. Y., Wise., N. Mex., and Cal. 



8. E. alpinum L. Glabrous or essentially so, tufted, the erect stems 1.5-3.5 

 dm. high, with elongated internodes ; leaves elliptical or the lowest obovate- 

 spatulate, distinctly petioled, slightly repand-denticulate, obtuse, 1.5-4 cm. long, 

 7-17 mm. broad ; flowers mostly 3-6 (rarely 12), terminal and in the upper 

 axils; petals white or pinkish, 3-6 mm. long; pedicels mostly shorter than the 

 green or red-tinged pod; seed 1.2-1.5 mm. long, smooth. (E. lactiflorum 



(J-Haussk.) Arctic Am., s. to alpine slopes and cliffs of the White Mts., N. H., 



,, Col., and Ore. June-Aug. (Eurasia.) 



j> 0. E. anagallidifblium Lam. Dwarf, the fruiting stems decumbent, finally 

 5-20 cm. high, the basal shoots wide-spreading and leafy; leaves narrowly 

 elliptic to oblong, obscurely petioled, subentire or remotely denticulate, obtuse, 

 1-1.7 cm. long, 2.5-8 mm. broad ; flowers 1 or 2 (rarely 3), terminal, often 

 nodding ; petals pink, 4-6 mm. long ; pedicels upright in fruit, mostly equaling 

 or exceeding the purplish pod; seed 1.5 mm. long, smooth. Arctic Am., s. iii 

 alpine districts to e. Que., Me.?, Col., and Cal. Immature specimens from 

 Mt. Katahdin, Me., are apparently of this species, although Haussknecht's 

 records of its occurrence in the White Mts. and the Adirondacks have not been 

 confirmed. July, Aug. (Eurasia.) 



10. E. Hornemdnni Reichenb. Resembling no. 8 ; the upper leaves usually 

 exceeding the internodes, ovate and mostly acutish, pellucid, 2-4.5 cm. long, 

 7-23 mm. broad ; flowers 2-several, in the upper axils ; petals pink to crimson, 

 6-7 mm. long; pedicels mostly shorter than the pod; seed 1 mm. long, papillate. 

 (E. alpinum, var. fontanum Wahlenb.) Arctic Am., s. in cold and alpine 

 situations to N. S., Me., N. H., Col., and Cal. July, Aug. The plant from the 

 Dells of the Wisconsin R. formerly reported as E. Hornemanni is apparently 

 E. adenocaulon, var. perplexans. (Eurasia.) 



