346 Henderson : New Plants from the Northwest 



This plant is certainly closely related to some of the forms of 

 Aster foliaceus, but differs from any of the varieties of this species, 

 (or from any of these species more probably), in the smaller heads 

 with even proportionately larger involucral bracts, more crowded 

 stems, corymbose inflorescence, and more abundant smaller leaves 

 tending to become condensed at top of stem. From A. Oreganus, 

 which it resembles in general habit and size of heads, the very dif- 

 ferent involucral bracts completely separate it. No. 2992. Moist 

 gravelly bars, Fort Sherman, Lake Coeur d'Alene, Idaho, August 

 22, 1897. Types placed in the Gray and National Herbaria, as 

 well as in the herbarium of the University of Idaho, and in my 

 private collection. 



y 



Aplopappus insecticruris 



Upright or nearly so from erect or ascending rootstocks, 30-40 

 cm. high, leafly, more or less villous with many-celled and jointed 

 white hairs : radical leaves 8-10 cm. long on petioles of nearly 

 equal length, the blades almost glabrous, petiole and ordinarily 

 midrib villous, subcoriaceous, serrate with rather distant triang- 

 ular-spinulose teeth, oblanceolate, acute to acuminate ; cauline de- 

 creasing slightly in size towards the heads, lanceolate to oblong, be- 

 low shortly petioled, above sessile and clasping, pectinately serrate : 

 heads 1.5-2 cm. high by 2-3 cm. wide: bracts of the involucre 

 loose, about equal in length or the outer foliaceously enlarged and 

 exceeding the head, linear-lanceolate, in 2 or 3 series, subcoria- 

 ceous, acute to pungently acuminate, outer villous-pubescent be- 

 low, glabrous above, inner chartaceous at base : rays conspicuous, 

 light yellow, 1.5 cm. long, about 20 in number: disk-corollas 

 exceeded by the tawny rigid strongly-toothed pappus : style-appen- 

 dages very hairy, longer than the stigmatic portion : akene from 

 narrowly oblong to shortly subturbinate in different heads of the 

 same plant, thickly covered with coarse more or less appressed 

 dull-white or tawny hairs. 



Near to A. hirtits, but differing in the nearly glabrous and 

 larger leaves, less wooly stem, larger heads with smoother in- 

 volucral bracts, coarser pappus, and more pubescent style-branches. 

 The akenes, though similar in the main to those of A. hirtus in 

 shape and covering, are inclined to be larger. The peculiarly 

 articulated hairs, resembling the legs of many species of insects, 

 though by no means peculiar to this species or even genus, sug- 

 gested the name. 



