50 PROCEEDINGS OF THE AMERICAN ACADEMY. 
broad, 3 or 4 inches long, glabrate above, floccose-tomentulose beneath, 
not narrowed at the base but decurrent upon the stem for nearly two 
inches in two broad wings, these sharply toothed especially near the 
lower end: bracts lance-linear: pedicels spreading, 4 to 15 lines in length, 
bearing several subulate bractlets: heads about 50, erect, half inch long 
and including the 8 or 10 spreading oblong golden-yellow rays, about 9 
lines in diameter: involucre calyculate, about 20-phyllous; scales atten- 
uate ; disk-flowers 40 to 45, shortly 5-dentate: ligules 3 to 3} lines long, 
1 to 1} lines broad, 4-nerved.— Collected by C. G. Pringle, on hills, at 
Las Sedas, Oaxaca, altitude 6,000 feet, 3 December, 1895, no. 6282. 
Gochnatia Smithii. Shrub? leaves clustered near the ends of 
the branches, oblong, entire, obtuse, cuneate at the base, thickish, grayish 
and covered with a very fine short tomentum above (perhaps later glabres- 
cent), much paler, tomentose and veiny beneath: heads in numerous 
slender close terminal globose glomerules, 8 lines long, about 6-flowered; 
involucres green, very slender, and gradually turbinate ; the scales in 
many (8 to 10) series, extending as it were down upon the pedicels, ovate 
to lanceolate, obtuse, pubescent : style-branches short, flattened, rounded : 
divisions of the corolla subequal, narrow: achene subvillous, 1} to 2 lines 
in length. — Collected by L. C. Smith, on hills of Cuicatlan, 30 April, 
1895, at 3,000 feet altitude; also by E. W. Nelson along road from 
Totolapa to San Carlos, altitude 3,000 to 3,800 feet, April, 1895, no. 
2546. Noteworthy for its very long slender closely imbricated involu- 
cres and globose inflorescences, the latter about 2 inches in diameter. 
Perezia Cuernavacana. Glabrous: stems clustered, 2 to 3 feet 
high, striate-angulate, purplislf, leafy: leaves oblong, obtuse and mucron- 
ulate at the apex, scarcely narrowed to the rounded subsessile base, 
sharply denticulate with pungent teeth,ereticulated and lucidulous on 
both surfaces, 2 to 2} inches long, 9 lines broad, ascending, imbricated, 
the uppermost gradually reduced: heads few, very large, about 30- 
flowered, 12 to 15 lines long and broad, terminal on long many-bracted 
peduncles: involucre turbinate, multiseriate ; the scales greenish, silky- 
ciliate, the inner ones oblong, obtusish, 1} to 2 lines broad near e 
summit, the outer gradually smaller and extending as subulate spreading 
bracts some distance down the peduncle: corollas lilac in dried state, 9 
lines in length: pappus tawny; achenes puberulent, 34 lines long. ag A 
handsome species collected by C. G. Pringle, at Cuernavaca, altitude 
7,000 feet, no. 6196. 
Perezia umbratilis. Habit of P. nudicaulis: root horizontal, send- 
ing off numerous stout fibres; caudex multicipital, tufted with sordid 
