152 NORTH AMERICAN FLORA [VoLuME 21 
the apex, acuminate or attenuate at the base, green, sparsely appressed-pilose, often glabrate; 
leaves subtending the head 2, exceeding or shorter than the inflorescence, sessile, long-pilose; 
heads solitary or glomerate at the ends of the branches or often sessile in the axils, subglobose 
or short-cylindric, 8-13 mm. in diameter; bracts triangular-ovate, long-acuminate; bractlets 
slightly longer than the bracts, 5-6 mm. long, concave, carinate, acutish, whitish or often tinged 
with red; perianth-lobes lanceolate, long-acuminate, white or rose, the tube densely lanate 
with white or brownish hairs; stamen-tube slightly shorter than the perianth or often con- 
spicuously exceeding it; style short, the short stigmas linear; seed reddish-brown, 1.5 mm. long. 
TyPE Locality: Mountain near Santa Cruz, Sonora. . 
DISTRIBUTION: Stony plains and foothills, southern Arizona to Lower California, Sinaloa, and 
Chihuabua. 
12. Gomphrena viridis Wooton & Standley, Contr. U. S. Nat. 
Herb. 16: 120. 1913. 
Cespitose perennial from a deep-seated woody root; stems slender, 5-15 cm. long, simple, 
ascending, sparsely appressed-villous, often glabrate, bearing 1 or 2 pairs of leaves remote 
from the inflorescence; leaves mostly apparently basal, borne near the summit of the branching 
caudex, long-petiolate, the blades broadly spatulate to oblong or oval, 3.5-7.5 cm. long, 2-3 
em. wide, rounded or obtuse at the apex, acute or actiminate at the base, bright-green, sparsely 
appressed-pilose, often glabrate; cauline leaves short-petiolate, oblong-obovate, oval, or rarely 
rounded-obovate, conspicuously longer than broad; heads on naked peduncles 2—7 cm. long, 
subglobose, 10-17 mm. in diameter; bracts ovate-orbicular, obtuse; bractlets half longer 
than the bracts, ovate-oblong, 6-7 mm. long, obtuse or acute, white, hyaline, concave; perianth 
usually slightly longer than the bractlets, the lobes oblong, rounded or emarginate, often 
minutely serrulate, white, green along the midnerve, the tube densely long-pilose with white 
hairs; stamen-tube shorter than the perianth; seed reddish-brown, 1 mm. long. 
TYPE Locality: Hanover Mountain, Grant County, New Mexico. 
DIstRiButiIon: Dry plains and hillsides, southwestern New Mexico and southeastern Arizona 
to northern Chihuahua and Sonora. 
13. Gomphrena caespitosa Torr. Bot. Mex. Bound. Surv. 181. 
1859, 
Xeraea caespitosa Kuntze, Rev. Gen. 545. 1891. 
Densely cespitose perennial from a perpendicular woody root having a woody branched 
caudex; flowering branches stout or slender, 3-15 cm. long, decumbent or ascending, simple or 
rarely branched, densely pilose with white, often spreading hairs, each stem bearing 1 or 2 
pairs of leaves; leaves mostly basal, on petioles equaling or shorter than the blades, the latter 
suborbicular or rounded-obovate to oval, rounded-oblong, or obovate, 1-5 cm. long, 0.7-2.5 cm. 
wide, densely appressed-pilose, rounded or obtuse at the apex, abruptly acute at the base; 
cauline leaves very shortly petiolate, orbicular to broadly oval, usually as broad as long; 
peduncles naked, 0.5-6 cm. long; heads subglobose or short-cylindric, 1.2-1.8 cm. in diameter; 
bracts white, ovate-oblong, obtuse or acute; bractlets half longer than the bracts, ovate-oblong 
or oval, acute or obtuse, often denticulate at the apex, white, hyaline; perianth usually shorter 
than the bractlets, the lobes oblong or linear-oblong, obtuse, sometimes green along the nerve, 
otherwise white, the tube densely white-pilose; stamen-tube slightly shorter than the perianth; 
seed reddish-brown, shining, 1.5 mm. long. 
Type LOcALITy: Organ Mountains, New Mexico. 
Pe aaa : Dry, stony plains and hillsides, southwestern New Mexico, Arizona, and northern 
14. Gomphrena pilosa (Mart. & Gal.) Mog. in DC. Prodr. 13?: 395. 
1849. 
Mogiphanes pilosa Mart. & Gal. Bull. Acad. Brux. 10!: 348. 1843. 
Xeraea pilosa Kuntze, Rev. Gen. 545. 1891. 
Stems erect or ascending, suffrutescent at the base, slender, branched, the branches 
ascending, appressed-pilose with fulvous hairs when young, glabrate in age; petioles slender, 
