BLAKE—NEW GENUS HEMIBACCHARIS, 547 
8. Hemibaccharis pringlei (Greenm.) PBlake. PLATE 48. 
Baccharis pringlet Greenm. Proc, Amer. Acad. 41: 259. 1905. 
TYPE Locality: Sierra de San Felipe, Oaxaca. 
SPECIMENS EXAMINED: 
Oaxaca: Wet ravines, Sierra de San Felipe, altitude 2,285 meters, De-- 
cember 11, 1895, Pringle 7014 (type; G, photo. N). 
Although only the staminate form is known, the relationship of this species 
to the H. glandulosa group is so close that its inclusion in Hemibaccharis is 
justifiable. H. pringlei is nearest H. oaracana, from which it differs in its 
larger leaves, up to 12 cm. long and 5.5 em. wide, with the petioliform lower 
portion 1.5 cm. wide, and its numerous smaller heads (the staminate about 
25-flowered, 5 to 6 mm. high), as well as in its eglandular pubescence. 
EXPLANATION OF PLATE 48.—Hemibaccharis pringlei, from the type specimen in the 
Gray Herbarium. Natural size. 
4. Hemibaccharis hieracioides Blake, nom. nov. 
Baccharis hieraciifolia Hemsl. Biol. Centr. Amer. Bot, 2 :129. 1881. Not B. 
hieracifolia Lam, 1783. 
Herbaceous, the base not seen; stem branched above, densely spreading- 
pubescent with several-celled gland-tipped hairs; petioles naked below, 3 to 12 
mm. long; leaf blades lanceolate or elliptic to lance-ovate, 4 to 12 cm. long, 
1.3 to 2.5 em. wide, acuminate, cuneate to acuminate at base, remotely spread- 
ing-mucronulate on margin, membranaceous, pubescent on both sides with 
several-celled, often giand-tipped hairs; heads rather numerous, in a loose 
panicle, the pedicels mostly 1 to 3 em, long; pistillate heads 7 to 10 mm. high, 
with about 54 pistillate flowers and 3 or 4 hermaphrodite; staminate heads 
9 to 11 mm. high, about 54-flowered; involucres about 4-seriate, 5 to 7 mm. 
high, the phyllaries linear-lanceolate, acuminate, densely stipitate-glandular, 
loose at tip, with green or purplish-tinged midline and apex and narrow 
scarious margins; achenes 2-nerved, compressed, hispidulous, 2 mm. long, 
their pappus whitish, 5 mm. long; style branches in the hermaphrodite flowers 
linear-lanceolate, acuminate, hispidulous. 
TYPE LOCALITY: Desierto Viejo, Valley of Mexico. 
SPECIMENS EXAMINED: 
Sratre or Mexico: Desierto Viejo, 1865, Bourgeau 1230 in part (G). Sierra 
de las Cruces, 1892, Pringle 5312 (G); in 1899, Pringle 7709 in part 
(N). Along brook, in shady woods, and on rocks, Mount Ixtaccihuatl, 
altitude 2,440 to 3,355 meters, 1903, Purpus 36 (N), 204 (G), 251 (N); 
in 1905, Purpus 1498 (N). 
Hemsley’s description of Baccharis hieraciifolia was based on Bourgeau 
951 and 1230. The former has not been available for examination; the latter, 
as represented in the National Herbarium, is H. glandulosa, but the specimen in 
the Gray Herbarium is the present species. Hemsley’s description of the 
leaves as ‘“utrinque attenuata” indicates the plant here renamed Hemibac- 
charis hieracioides, 
e 
5. Hemibaccharis simplex Blake, sp. nov. PLATE 49. 
Herbaceous perennial, about 60 cm. high, the apparently solitary stems 
erect or ascending from a procumbent rooting base, slender, purplish-tinged, 
rather sparsely hispidulous with incurved sordid hairs with subtuberculate 
bases, glabrate below, simple below the inflorescence; internodes 5 to 25 
mm. long; petioles 2 to 5 mm. long, naked; leaf blades cuneate-oblanceolate to 
elliptic-obovate, 3.5 to 7 cm. long, 1.3 to 2.2 cm. wide, acute, mucronulate, 
cuneate at base, remotely denticulate-mucronulate, membranaceous, above 
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