GREENMAN. — SPERMATOPHYTES FROM MEXICO, ETC. 259 
From the former it differs in having horizontally spreading hirsute hairs 
on the stems, and in being glandular-puberulent; from the latter it 
differs in being glandular-puberulent or at least atomiferous-glandular, 
and in having heads averaging fully one-third larger not only in the 
length of the ray-flowers but in the longer involueral bracts, ete. 
ERIGERON REPENS, Gray, var. psammophilus, n. var, Stem slen- 
der, somewhat flexuous, sparingly pubescent: leaves glabrous or incon- 
spicuously pubescent: other characters of the species. — Mexico. State 
of Vera Cruz: Lizardo, Dr. Wawra, no. 276 (hb. Berlin, and hb. Gr.). 
Mr. C. G. Pringle’s no. 9673 collected on sand dunes near the City of 
Vera Cruz, and noted in the Proceedings of the American Academy 
xxxix, 95, 1903, forms a good intermediate between the type of the above 
species and the variety here described. 
Baccharis Palmeri, n. sp. Suffraticose: stems one to several from 
a ligneous base, erect, 2 to 3 dm. high, striate-angled or furrowed, glab- 
rous, glandular-viscid : leaves sessile, lanceolate to oblanceolate, 7 to 28 
mm. long, 1 to 8 mm. broad, acute, entire, glabrous, punctate and glan- 
dular-viscid, uninerviate or with 2 lateral inconspicuous nerves: inflores- 
cence corymbose or corymbose-paniculate : heads 3 to 5 at the ends of the 
branches on rather short peduncles : heads of the staminate flowers 8 to 10 
mm. high, 11-13-flowered; involucral bracts in 3 to 4 series, lanceolate, 
3 to 7 mm. long, acute, the outer greenish glandular and shorter than the 
inner almost colorless ones: heads of the pistillate flowers 1 to 1.5 em. high, 
15—18-flowered ; bracts of the narrowly campanulate involucre 3—4-seriate, 
elliptic-lanceolate to lanceolate, 2 to 6 mm. long, the outer greenish, 
glandular-viscid, obtuse and shorter than the pale almost colorless or sub- 
hyaline inner acute ones: mature achenes 2 mm. long, striate, glabrous, 
bearing the rather persistent pappus, the latter 10 to 12 mm. in length. — 
Mexico. State of Durango: vicinity of the city of Durango, April to 
November, 1896, Dr. 01 (hb. Gr., and hb. Berlin) 
staminate plant, and no. 802 (hb.: Gr.) pistillate plant. The species is 
-related to B. Seemanni, Gray, which it superficially resembles, but differs 
in having shorter peduncles, more numerous heads, and a fewer-seriated 
involucre. ; 
Baccharis Pringlei, n. sp. Stem striate, purplish, pubescent with 
crisp hairs; internodes 5 to 6 cm. in length: leaves alternate, sessile, 
ovate, acuminate, 4 to 12 cm. long, 2 to 5.5 em. broad, abruptly nar- 
rowed below the middle to about 1.5 cm. in breadth, amplexicaul, mu- 
cronate-acute, subsinuate-dentate and the teeth terminated by a mucro, 
ciliate, hirsute-pubescent above, paler and pubescent on the midrib and 
