NEW OR NOTEWORTHY SPECIES. 2^7 



4 



teeth; caiiline 1 inch long or more, entire, acute: heads 2 or 

 3; bracts of involucre in about 2 series, narrowly linear, more 

 or less recurved at tip: rays white, very narrow and numer- 

 ous (about 100), 1 inch long. 

 Collected by the writer, at the limit of trees, on Mt. Evans, 



central Colorado, in the summer of 1875. 



Erigeron hyperboreus. Perennial, with long tap root and 

 no caudex: stems stoutish, decumbent, 6 or 8 inches high, 

 usually raonocephalous: herbage green but roughish with a 

 short and rather dense hispidulous pubescence: radical 

 leaves oblanceolate, entire, obtuse, 2 to 2} inches long, nar- 

 rowed to a short slender petiole; cauline rather numerous, 

 oblong-lanceolate, sessile: head sliort-pedancled, 4 lines liigh:. 

 bracts of involucre modera.tely unequal: rays 40 or more, 3 

 or 4 lines long, rather broad: pappus double, the outer setu- 



lose. 



Porcupine Eiver, Alaska, Mr. Turner. Allied to E. ccespi- 

 iosus. but lacking the woody caudex of that species, and with 



a different pubescence. 

 Erigeron Turneri. Stems mostly solitary, 12 to 18 inches 



high, stoutish, strictly erect, from rather slender ascending 

 or\orizontal rootstocks; herbage rather conspicuously hir- 

 sute, the hairs of the foliage spreading, of the stem more or 

 less distinctly retrorse : radical leaves ascending, 2 to 4 inches 

 long spatulate-oblanceolate, obtusish, remotely crenate or ser- 

 rate; cauline rather many, lanceolate, acute, entire: lieads 2 

 to 5, large: bracts of involucre recurved at tip: rays | inch 

 long, whitish, very numerous (80 or more). 



Habitat of tlie last, and by the same collector. Species 



nr> 



if 



nor leaves depressed- 



Callichroa nutans. Annual, slender, 3 to 6 inches high 

 branching loosely and somewhat corjmbosely: leaves a 

 linear, entire, h to | inch long, the lower pairs opposite, all 



[ [«Tied Mai -^t 1&92.J 



