EVENING PRIMROSE FAMILY 165 



rounded to very short petioles. Petals bright rose-color, 

 H to 1 in. long, deeply lobed. 



Rocky slopes and ledges at the base of Mt. Hoffmann are 

 often brilliant with the flowers of this little plant, which 

 creeps along the surface, forming loose mats or streamers. 

 Further exploration will doubtless discover it on other of our 

 high peaks. 



3. E. minutum Lindl. Stem scarcely branched, 6 to 18 in. 

 high, annual, minutely crisp-pubescent or nearly glabrous. 

 Leaves lanceolate, acute, obscurely few-toothed, 1 in. or less 

 long, mostly with smaller ones clustered in the axils. Petals 

 violet or pale, small, deeply cleft.— Vernal Falls and else- 

 where on moist banks. 



4. E. paniculatum Nutt. Stem freely branched, 1 or 2 ft. 

 high, glabrous or glandular, from an annual root. 

 Leaves linear-lanceolate, acute, nearly entire, 1 or 

 2 in. long, often with smaller ones in the axils. 

 Petals violet.— Common, in middle California, ex- 

 tending into the mountains as far as Nevada Falls. 

 The flowers are twice as long as in no. 3 and the 

 seeds are also much larger. 



5. E. adenocaulon Haussk. Stems stout and 

 erect, V/2 to 4 ft. high. Herbage glabrous 

 below, the buds, capsules, etc., glandular- 

 pubescent. Leaves elliptic to ovate-lance- 

 olate, rounded to short petioles, slightly 

 toothed, obtuse, 2 or 3 in. long. Petals r /& 

 to J4 m - long - * rose-pink, notched at sum- 

 mit. (E. concinnum Congdon.) 



In the var. occidentale Trel., of this spe- 

 cies, the leaves are more triangular-lance- 

 olate, mostly 2 in. long, those of the inflor- 

 escence acute at each end. Both forms are 

 common in the mountains, where they in- 

 habit moist meadows and stream banks, 

 becoming 2 to 4 ft. high. Related species which may be 

 found are E. watsonii Barb., marked by its softly crisp-downy 

 pubescence and large petals (about j4 in. long) and E. cali- 

 fornicum Haussk., known by its long, thin leaves and the 

 spreading, non-glandular hairs on the flower-buds. 



6. E. brevistylum Barb. Stems slender, erect, 6 to 18 in. 

 high. Herbage crisp-hairy above, mostly glabrous below. 

 Leaves sessile, ovate-lanceolate, slightly toothed, 24 to 2 in. 

 long. Petals purplish. — Rare, found along the Tioga Road; 

 dwarf forms look like the next. 



