668 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
1. Euthamia occidentalis Nutt. Trans. Amer. Phil. Soc. n. ser. 7: 326. 1841. 
Solidago occidentalis Torr. & Gray, Fl. N. Amer. 2: 226. 1841. 
Type Locatiry: ‘Banks of the Oregon and Wahlamet, and Lewis River.”’ 
Rance: Washington and Montana to Colorado and New Mexico. 
New Mexico: Mesilla Valley. Lower Sonoran Zone. 
28. SOLIDAGO L. GoLpENRop. 
Perennial herbs with sessile or nearly sessile, alternate leaves and very numerous 
racemose or clustered, small heads of yellow flowers; heads few to many-flowered, 
the rays 1 to 16, pistillate; bracts appressed, without herbaceous tips; receptacle 
naked; achenes terete, many-ribbed, with simple pappus of nearly equal capillary 
bristles. 
KEY TO THE SPECIES. 
Leaves glabrous, or slightly pubescent along the veins and 
margins. 
Leaves not triple-veined; branches of the inflorescence 
short, not recurved-spreading; heads not secund. 
Plants low, 10 to 15 em. high; inflorescence with few 
heads, short, congested.............-222..-2-2-- 1. S. decumbens. 
Plants taller, 20 to 40 cm.; inflorescence. with many 
heads, elongated. 
Branches of the inflorescence villous; leaves ciliate 
at the base..............-2---2-----2-220---- 2. S. scopulorum. 
Branches of the inflorescence not villous; leaves not 
ciliate. 
Heads about 7 mm. high; bracts acute or 
abruptly acuminate.................--- 5. S. neomexicana. 
Heads about 5 mm. high; bracts obtuse, thick. 
Rays pale yellow............22-20-2+-0-20- 4. S. oreophila. 
Rays deep golden yellow............-..-.. 3. S. aureola, 
Leaves triple-veined; heads mostly secund on longer re- 
curved branches. 
Cauline leaves lanceolate; stems tall, usually a meter 
high or more, deep purple at the base............ 9. S. pitchert. 
Cauline leaves oblanceolate or narrower; stems usually 
lower, not deep purple at the base. 
Heads fully 5 mm. high; stems stout; branches of the 
inflorescence long and widely spreading...... 6. S. marshallit. 
Heads 4 mm. high or less; stems more slender; 
branches of the inflorescence narrower and less 
spreading. 
Plants nearly 1 meter high, very slender; cau- 
line leaves linear or linear-oblanceolate; 
inflorescence very narrow........-------- 7. S. tenuissima. 
Plants lower, stout; cauline leaves lanceolate; 
inflerescence broader, the branches 
stouter, spreading...................200. 8. S. glaberrima. 
Leaves canescent, usually on both surfaces. 
Leaves lanceolate to ovate; plants mostly 1 meter high or 
more (lower in S. bigelovit). 
Leaves broadly lanceolate or ovate; branches of the 
inflorescence erect; heads not secund............ 14. S. bigelovii. 
Leaves lanceolate or narrowly so; branches of the in- 
florescence spreading; heads secund. 
