NO. 33 THREE NEW PLANTS FROM ALBERTA — STANDLEV 3 



glandular-puberulent and with rather few soft, weak, many-celled 

 hairs on both surfaces ; peduncles long and tortuous, 14 to 22 cm., 

 glandular-puberulent and abundantly villous ; heads, exclusive of 

 the rays, 2 cm. in diameter, hemispheric or nearly globose ; involucral 

 bracts in several series, i to 2 cm. long, elliptic or elliptic-lanceolate, 

 the outer much longer and broader than the linear inner ones, 

 purplish at the base and on the margins, elsewhere bright green, 

 most of them abruptly acute, freely arachnoid especially when young ; 

 rays bright deep yellow, 25 to 30 mm. long, 3-lobed at the apex, the 

 lobes oblong, obtuse, glabrous on the upper surface but bearing a few- 

 short, several-celled hairs beneath ; corollas purplish, the tube nearly 

 or quite glabrous, the lobes triangular, acute, glandular-villous ; 

 achenes obpyramidal, densely covered with coarse, appressed, 

 bristle-like hairs ; pappus of lanceolate, white, hyaline scales with 

 long-attenuate tips ; fimbrillse of the receptacle coarse, setiform, not 

 much longer than the achenes. 



Type in the U. S. National Herbarium, no. 622536, collected near 

 Henry House, Alberta, September 11, 191 1, by J. H. Riley (no. 4). 



Our plant, the northernmost representative of the genus appar- 

 ently, is similar to G. aristata Pursh but is at once distinguished by 

 the elongated, broad outer bracts of the involucre as well as by the 

 tall stems, short fimbrillse of the receptacle, entire leaves, and rather 

 different pubescence. 



SVIDA PUBESCENS (Nutt.) 



Cornus pubescens Nutt. Sylva 3 : 54. 1849. 



Cornus sericca ? occidentalis Torn & Gr. Fl. N. Amer. i : 652. 1840. 



Cornus occidentalis Coville, Contr. Nat. Herb. 4: 117. 1893. 



Among the shrubs collected is one which appears not to have been 

 segregated from the genus with which it has been associated. As 

 has been shown by Dr. J. K. Small and others, the genus Svida is 

 a well marked one, and should not be combined with typical Cornus. 



