276 PROCEEDINGS OP THE AMERICAN ACADEMY 



Prionosciadium Pringlei. Kesembling the last in habit and 

 foliage, rather more pubescent and the segments of the leaves more 

 acutely toothed : fruit somewhat pubescent, ou pedicels 1 or 2 lines 

 long, oblong-elliptical, 4 or 5 lines long by 2| or 3 broad, narrower 

 below and scarcely at all retuse or cordate, the wings mostly narrower 

 than the seed : vittae broad and thin, 3 in the intervals, 6 on the com- 

 missure. — In the shade of cliffs on the Mapula Mountains (n. 1137) 

 and ou shaded slopes of La Bufa Mountain above Cusihuiriachic, Chi- 

 huahua (n. 1249) ; C. G. Pringle, Oct., 1886, and Sept., 1887. Dis- 

 tributed as Angelica Mexicana. 



Eulophus tenuifolius. Glabrous ; stems ascending, surrounded 

 at base by the fibrous remains of old petioles, mostly simple, a foot 

 high or more : leaves mostly radical, long-petioled, thrice pinnate, the 

 linear leaflets very narrow, 2 to 5 lines long; solitary cauline leaf 

 small, on a short dilated petiole: rays usually 10, about an inch long; 

 involucels of several laciniately cleft bracts, mostly adnate to the short 

 pedicels : flowers yellow : fruit ovate, acutish, 2 lines long or more ; 

 ribs slightly prominent ; carpophore bifid or entire; vittae numerous : 

 seeds strongly lunate and deeply channelled. — In canons of the Sierra 

 Madre, Chihuahua; C. G. Pringle (n. 1518), Oct., 1887. 



Eulophus ternatus. Glabrous and glaucous ; stem erect, much 

 branched : radical leaves biternate, the leaflets very narrowly linear, 

 entire, 1 \ or 2 inches long or more ; cauline leaves mostly ternate or 

 the upper simple : umbels long-pedunculate, or the lateral often ses- 

 sile, few- (usually 5-) rayed, the terminal involucrate with 1 or 2 long 

 linear bracts ; involucels none : flowers yellow : fruit round-ovate, ob- 

 tuse, 1J lines long; ribs obsolete; carpophore 2-parted ; vittae very 

 numerous : seed deeply and broadly channelled. — Pine plains at the 

 base of the Sierra Madre, Chihuahua; C. G. Pringle (n. 1252), 

 Sept., 1887. 



Stevia Pringlei. Perennial, the herbaceous stems a foot high, 

 simple above the branching base, purplish, sparingly appressed-pubes- 

 cent: leaves approximate, mostly alternate (the lower only opposite), 

 sessile, glabrous, linear (or the lower on the main stem oblong to 

 oblong-ovate), obtuse, entire, about an inch long: heads few, on slen- 

 der peduncles in a loose corymb ; involucre slightly puberulent, pur- 

 plish, 3 or 4 lines long: corollas pale purple, 5 or 6 lines long: achene 

 puberulent, the pappus exaristate, short and coroniform, the paleae 

 somewhat connate. — Apparently near to & pilosa, Lag. Foothills 

 of the Sierra Madre, Chihuahua; C. G. Pringle (n. 1301), Sept., 

 1887. 



