430 BOTANICAL GAZETTE [DECEMBER 
obovate, 7.5-13 cm. long (including the 2-3.5 cm. long petiole), 
obtuse, apiculate, acuminate into the petiole, sparsely and minutely 
glandular-denticulate or subentire, evenly but not densely long- 
pilose above (the hairs whitish, with brownish tuberculate bases, 
about 4 mm. long), beneath green, similarly pubescent; other stem 
leaves oblong-elliptic or oblong-ovate to elliptic, 5-7 cm. long, 
1.3-2.2 cm. wide, sessile by a broad base, otherwise similar to the 
lower leaves; chief branches of inflorescence about 5, the lowest 
subtended by leaves similar to the upper stem leaves, the others 
by reduced lanceolate or lance-linear bracts 1-4 cm. long, 1-10 mm. 
wide; panicle loose, 20~48-headed, about 12cm. wide; pedicels 
pubescent like the upper part of the stem, 7-17 mm. long; involucre 
campanulate, 7-8 mm. high in fruit, 2-seriate, equal or subequal, 
without evident calyculus, the phyllaries lance-subulate, acuminate, 
blackish-green (the inner with thin pale margins), evenly but not 
densely pilose with spreading blackish eglandular hairs about 2 mm. 
long and especially at base pedicellate-glandular, the hairs blackish 
below, yellowish above like the glands; heads about 43-flowered, 
the corollas not seen; achenes blackish-brown, 2.2 to 2.5 mm. long, 
columnar-ovoid, abruptly contracted downward near base, gradu- 
ally narrowed to apex, not at all beaked, about 12-ribbed, minutely 
hispidulous especially toward base; pappus brownish-straw-color, 
fragile, 5.5 mm. long, equaling the involucre. 
Bo.iv1A.—La Paz, March 19, 1920, E. W. D. and M. M. Holway 425 (type 
in U.S. National Herbarium no. 1058601). 
BurEAv OF PLANT INDUSTRY 
WasuincrTon, D.C. 
EXPLANATION OF PLATE XIX 
Monopholis hexantha Blake.—a, branch, X#; 6, head, X8; c¢, disk 
corolla, X8; d,stamens, <8; e, style branches, much enlarged; f, g, two achenes 
in lateral and dorsal view, <8. 
