Part 2, 1915] CARDUACEAB : TAGETEAE 179 



1. Gnaphaliopsis micropoides DC. Prodr. 7: 258. 1838. 



Hymenatherum gnaphalodes A. Gray, Mem. Am. Acad. II. 4: 90. 18 ; 

 Hymenalherum Gnaphaliopsis A. Gray, Mem. Am. Acad. II. 4: 115. 1849. 

 Hymenatherum micropoides A. Heller, Cat. N. Am. PI. 8. 1898. 

 Thymophylla gnaphaloides Small. PI. SE. U. S. 1295. 1903. 

 Dyssodia micropoides Loesener, Bull. Herb. Uoiss. II. 6: 866. 1906. 



A densely white-floccose, depressed, spreading, cespitose perennial, with a woody caudex; 



stems rarely more than 1 cm. high; leaves spatulate, 5-18 mm. long; involucre 6 mm. high) 



5-6 mm. broad; bracts with ovate free tips, and 7-9 glands hidden on the outside by the 



wool, but conspicuous inside; ligules 5-6 mm. long, 2-3 mm. wide; disk-corollas 3 mm. long; 



achenes 3.5 mm. long, pilose; inner squamellae 3 mm. long, the outer oblong or spatulate, less 



than 1 mm. long. 



Type locality: Monterey, Nuevo Leon. 



Distribution: Western Texas to Coahuila and Nuevo Leon. 



16. NICOLLETIA A. Gray; Torr. in Frem. Rep. 315. 1845. 



Perennial or annual (?) glabrous herbs, with slender rootstocks. Leaves alternate, pin- 

 natifid, with narrow divisions. Heads radiate. Involucre campanulate or turbinate, sub- 

 tended by a calyculum of 1-5 small accessory bracts; principal bracts 8-12 in a single 

 series, slightly overlapping and narrowly scarious-margined. Receptacle convex, favose. 

 Ray-flowers few, pistillate and fertile; ligules flesh-colored or purplish, oblong, entire or 

 slightly 3-toothed. Disk-flowers many, hermaphrodite and fertile; corollas with a short gla- 

 brous tube gradually enlarging into a trumpet-shaped elongate throat; lobes 5, short, erect. 

 Style-branches with filiform hispid appendages. Achenes slender, clavate-subcylindric, 

 gradually tapering downward, subterete, hirsute with short ascending hairs. Pappus double, 

 the inner of 5 lanceolate awn-tipped squamellae, the outer of numerous capillary bristles. 



Type species, Nicolletia occidentalis A. Gray. 



Ligules 4 mm. long; accessory bracts rather conspicuous, one-third to one-half 



as long as the involucre; leaf -segments linear. 1. N. occidentalis . 



Ligules 8-10 mm. long; accessory bracts less than one-fourth as long as the 

 involucre; leaf -segments linear-filiform. 

 Pappus-squamellae entire; awn at least three-fourths as long as the body. 2. N. Edwardsii. 



Pappus-squamellae 3-cleft at the apex; awn one-fourth to one-half as long as 



the body. 3. N. trifida. 



1. Nicolletia occidentalis A. Gray; Torr. in Frem. Rep. 316. 1845. 



A perennial herb, with a slender rootstock; stem stout, 2-3 dm. high, with ascending 

 branches, striate, glabrous; leaves alternate, fleshy, 3-5 cm. long, pectinately pinnatifid with 

 linear, awn- tipped divisions, each bearing a gland near the tip; heads subsessile; involucre 

 15-17 mm. high, 8-10 mm. broad; principal bracts 8-12, broadly linear, glabrous, abruptly 

 acute, slightly scarious-margined, with a single gland near the apex, and occasionally one or 

 two near the margins below; accessory bracts 1-5, ovate, acute, one third to one half as 

 long as the involucre; ligules flesh-colored, oblong, mostly ascending, 4 mm. long; disk- 

 corollas yellow, 8 mm. long; tube 1.5 mm. long; lobes lanceolate, glandular-puberulent ; 

 achenes 8 mm. long; squamellae S mm. long, narrowly lanceolate, gradually attenuate into 

 hispidulous awn-tips; bristles 5-6 mm. long. 



Type locality: Banks of the Mojave River, southeastern California. 

 Distribution: Southern California. 



2. Nicolletia Edwardsii A. Gray, PI. Wright. 1: 119. 1852. 



An annual (according to original description) or perennial, with a slender rootstock; stem 

 slender, 1-2 dm. high, branched from near the base, glabrous; leaves alternate, pinna tely 

 divided into 3-5 linear-filiform divisions, attenuate, and each bearing a gland near the apex; 

 peduncles 1-1.5 cm. long; involucre turbinate, 10-12 mm. high, 5-8 mm. broad; principal 

 bracts oblanceolate, scarious-margined, acuminate, with a short gland near the apex, and 

 one or two elongate linear ones near each margin; accessory bracts lanceolate or ovate, less 

 than one-fourth as long as the involucre proper; ligules oblong, about 10 mm. long, bluntly 



