50 PROCEEDINGS OF THE AMERICAN ACADEMY. 



nii(lril) beiKiath, provided with a row of submarginal glands on (iither 

 half of the blade, more or less revolute-margined: peduncles slender, 

 filiform, 4 cm. or less in length : heads small, about G mm. high: invo- 

 lucre 4 mm. high, glabrous ; bracts of the involucre 8, linear, blunt, 

 obtusely keeled: ray-flowers 8; pappus of 2 slender setae and a small 

 intermediate anterior scale; rays including the tubular portion 4 mm. 

 long : disk-flowers about 15 ; pappus of numerous slender unequal setae : 

 mature achenes of both ray- and disk-flowers about 2.5 mm. in length, 

 puberulent. — Mexico. State of Sinaloa : Lodiego, 9 to 15 October, 

 1891, Dr. Edward Palmer, no. 1605 (hb. Gr., and hb. U. S.Nat. Mus.). 

 In a natural secjuence this species is to be placed near P. papposa, 

 Gray, and P. Palmeri, Watson. From the former it is readily and 

 easily separated by having the heads disposed on long slender peduncles 

 instead of subfastigiate ; from the latter it differs in the smaller fewer- 

 flowered heads, shorter involucre and more slender peduncles. P. 

 puberida differs from both P. papposa and P. Palmeri, in having the 

 stem and branches [)uberulent. 



Pectis sinaloknsis, Fernald, var. lancifolia, n. var. Leaves 

 sessile, lanceolate, 2.5 cm. 'or less long, G mm. or less broad, usually 

 hirtellous-puberulent on the upper surface and on the midrib beneath, 

 bearing 1 to 6 pairs of setae toward the base: peduncles 11 cm. or less 

 in length : rays golden-yellow or before expansion slightly copper-colored 

 externally, somewhat larger than in the type of the species. — Mexico. 

 Territory of Tepic : between Concepcioii and Acaponeta, 29 July, 1897, 

 Dr. J. N. Rose, no. 1893 (hb. Gr., and hb. U. S. Nat. Mus.). 



Artemisia Pringlei, n. sp. Annual, or biennial (?), with a single 

 erect stem, or sometimes several-stemmed from a common base, 4 to 8 

 dm. high, more or less white-tomeutose throughout : lower leaves bi- 

 tripinnately parted, 2 to 6 cm. long, 3 cm. or less broad, white-tomcntose 

 on both surfaces, later as well as the stem below somewhat glabrate ; 

 segments linear, obtusish, revolute-raargined ; upper leaves similar, 

 becoming less parted and finally reduced to simple lance-attenuate entire 

 bracts in the inHorescence : the terminal racemiform panicles 0.5 to 2.5 

 dm. in length, 1 to 2.5 cm. in diameter : heads in anthesis 3 to 4 mm. 

 high, equally broad, nodding : involucre campanulate, subtriseriate, 

 externally white-tomentose ; bracts of the involucre oblong to oblong- 

 ovate, obtuse or rounded at the !q)ex, scarious-margiued : llovver8 30 to 35, 

 about one-half of which, namely the outer ones, are pistillate, the others 

 hermaphrodite : corollas short-stipitate-glaudular : achenes epapj)ose. — 

 Mexico. State of Chihuahua: plains near the City of Chihuahua, 



