*lo6 PROCEEDINGS OP THE AMEUICAN ACADEMY 



Cacalia Pringlei. Tall and rather slender, glabrous or nearly 

 80 : radical leaves long-petiolate, ample, the blade (a foot long) 

 broadly elliptical in outline, deeply pinnatifid with rounded sinuses, 

 the 4 or 5 pairs of lobes again similarly pinnatifid, their few segments 

 mostly coarsely toothed : bracts of the broad loose panicle narrowly 

 lanceolate, entire or sparingly toothed : heads 3 or 4 lines long, about 

 12-flowered, the campanulate involucre of 8 broad acute bracts 2 or 3 

 lines long: corolla cleft nearly to the middle: achenes pubescent. — 

 On grassy slopes of the barranca near Guadalajara; November, 1888 

 (n. 1749, 1811). The foliage is much as in C. sinuala, but the in- 

 volucral scales are shorter and broader, and panicle much more open. 



Cnicus Pringlei. Tall and slender, branched above : leaves 

 greenish above, densely white-tomentose beneath ; the lower a foot 

 long or more, petiolate, deeply pinnatifid, the narrow segments with 

 1 to 3 lateral lobes, rather sparsely spinose with slender i^rickles ; the 

 upper sessile and clasping : heads small (about an inch long), solitary 

 or in pairs ; involucre nearly glabrous, the very unequal narrow scales 

 with a prominent black viscid midvein, the lower with an appressed 

 short spine, the upper with slightly rigid attenuate tips : corolla pur- 

 ple : anthers acutely appendaged. — In the Sierra Madre near Mon- 

 terey ; 1889 (ii. 2507). Of the C. altissimus group, marked by the 

 black scales without spreading setiform prickles. 



Perezia grandifolia. Stout and tall (6 to 10 feet high), gla- 

 brous : cauline leaves thin, large (some a foot long by 8 inches 

 broad), sessile with a broadly auriculate base, obovate, obtuse, sharply 

 repand-serrulate ; floral leaves small, oblong with auriculate base, 

 acute: panicle broad, open, glandular-puberuleut and viscid, the small 

 10-12-flowered heads (6 lines long) on slender peduncles: involucral 

 scales herbaceous, linear-lanceolate, acuminate, in few series, passing 

 downward into the bracts of the pedicel : achenes glabrous. — On cool 

 rocky hillsides near Guadalajara; 1889 (n. 1858). Of the P. llmr- 

 heri group, as arranged by Dr. Gray. 



Perezia capitata. Slender (5 to 8 feet high), widely branch- 

 ing, leafy, somewhat finely pubescent : leaves thickish, rigid, rhom- 

 bic-ovate to lanceolate, acuminate, cuneate or the upper rounded at 

 base, sessile or very nearly so but not at all amplexicaul or auriculate, 

 the cauline 3 to 5 inches long by 1 to 3 broad: heads sessile in ter- 

 minal clusters, 5-flowered, 4 or 5 lines long; involucral scales rather 

 few, narrow, acuminate : achenes puberulent. — On warm rocky hill- 

 sides near Guadalajara; 1888 (n. 1859). With P. Scemanni, as 

 grouped by Dr. Gray, but very different iu habit and other characters. 



