Bulletin University of New Mexico—No. 49 
acuminate ; heads smaller. 
Heads from 1-3 to 3 in. long, sessile, T. SERICEA. 
Heads smaller 1-4 in. high, exclusive of 
the rays, mostly short pedunculate, T. sTRIGOSA. 
T. Eximia. Gray. Caulescent, stem erect, simple or 
sparingly branched, 6-14 in. high, somewhat hirsute- 
pubescent, but the foilage at length glabrate; leaves 
spatulate or the upper lanceolate; head sparingly leafy- 
bracted or naked at base; involucre naked, its bracts 
ovate-lanceolate ad somewhat rigidly cuspidate acum- 
inate, whitish with green center, 1-2 in. or more high; 
rays showy, 1-2 in. long, bright blue or violet; akene 
boardly ovate, almost cartilaginous, glabrate, with a 
few glochidiate hairs; pappus of 2 subulate stout awns 
shorter than the akene, and a circle of rigid scales. 
“Sandia Mts., four miles south of Tieras.” 1908. 
T. SERICEA, Hook. Depressed acaulescent, with close- 
ly sessile solitary or few heads, tight against the 
ground, 1-3 to 3-4 in. long, surrounded by the linear or 
spatulate leaves, an inch or two high; plants sericeous- 
pubescent ; involucral bracts narrowly lanceolate, acute ; 
rays white or purplish; hairs on the achene glochidiate. 
In the red soil around Tijeras in the Pinon Soc. Mar. 
14, 1908. A strikinkly beautiful blossom in early 
spring. 
T. strigosa, Nutt. Mesa Townsendia. 
Flowered when only 1-2 in. high, often attaining 6 to 
7 in. in hight; often 1-flowered, early leaves spatu- 
late later ones linear; bracts of involucre broadly 
lanceolate, acutish, in about two ranks, the outer short- 
er. Common on the Mesa in spring. April 19, 1908. 
14. BACCHARIS, LZ. (Grounded-tree.) 
Commonly smooth and resinous shrubs, flowers 
whitish or yellow, imbricated involucre, corolla of the 
pistillate flowers very slender and thread-like, of the 
stamenate larger and 5 lobed, achenes ribbed. 
B. wRicHTu, Gray. Diffusely branching, sparsely 
leaved ; slender branches terminated by solitary heads; 
leaves linear; 1-nerved, small, the upper mostly linear- 
subulate; involucre 1-3 to 1-2 in, high; pappus fulvous 
or sometimes purplish. 
15. ANTENNARIA, Gaertn (Everlasting.) 
Perrennial white woody herbs, with entire leaves, 
corymbed heads of yellowish flowers, dry and papery 
whitish involucral bracts imbricated; convex or naked 
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