CATALOGUE. 145 



series, the outer ones broadly spatulate, herbaceous, inner ones longer and 

 with membranaceous margins, innermost occasionally very long and narrow, 

 almost wholly membranaceous ; ray-flowers with a very short ligule or only 

 a slender truncated tube much shorter than the style ; disk-flowers numerous, 

 very slender; achenia densely pubescent; pappus very copious, considerably 

 exceeding the involucre. — Slave Lake and Saskatchewan to California, 

 Colorado and New Mexico. Valleys from the West Humboldt Mountains to 

 theWahsatch; May-September. (517.) 



TowNDSENDiA^ SCAPIGERA. Canescent with fine appressed hairs ; caudex 

 perennial, bearing a tuft of leaves with a roundish or obovate sometimes 

 emarginate lamina, narrowed into a petiole 1-2' long, and giving rise to 

 several naked or 1-2-bracted monocephalous scapes 2-3' high ; involucre 

 6-8" wide, the scales imbricated in about two rows ; the outer ones ovate- 

 oblong, mostly herbaceous, hairy ; inner ones oblong-lanceolate, the scarious 

 margins slightly fringed, and pinkish towards the tips ; ray-flowers twice as 

 long as the involucre, mostly fertile; pappus as long as the acheniam, that of 

 the disk-flowers rather longer. — -Flowers dull-pinkish. This will rank with 

 T. sericea and T. incana, on account of the perennial root and well-developed 

 pappus of the ray, though in the following variety it approaches the habit of 

 Nanastrum. Dry rocky ridges in the Trinity and Pah-Ute Mountains, 

 Nevada; 5-6,000 feet elevation. May, June. Plate XVII. Fig. 1 . Plant ; 

 natural size. Fig. 2. Ray-flower. Fig. 4. Disk-flower. Fig. 6. Anther ; each 

 enlarged three diameters. Fig. 3. Pappus-bristle of ray-flower. Fig. 5. 

 Same of disk-flower; enlarged eight diameters. Fig. 7. Style of disk; 

 enlarged ten diameters. (518.) 



Var. CAULESCENS. Stems 4' long, sending out leafy branches near the 

 base; leaves narrowly linear-spatulate, 2 i' long; heads rather smaller; in 

 other respects like the type.-^Monitor Valley, Nevada, 5,500 feet elevation ; 

 July. (519.) 



ToWNSENDiA STRiGOSA, Nutt. Annual, canescent with a fine appressed 



1 TOWNSENDIA, Hook. Heads large ; the rose-colored or whitish, rays in one series, rather long, 

 pistillate, sometimes infertile ; disk -flowers perfect, -with tuhular-obconic 5-toothed corollas. Branches 

 of the style lanceolate, acutish, hairy towards the ends. Involucres hemispherical or suh-glohose, of 

 numerous rather large, imbricated and appressed, scarious-margined lacerate-fringed and often tinted 

 scales. Achenia flattened, pubescent or hairy, 2-3 nerved. Pappus of numerous stout harbellate bris- 

 tles, that of the ray commonly shorter, or reduced in part or -wholly to short subulate bristles or little 

 scales. — Dwarf, stemless or branching, annual or perennial herbs, -with crowded, linear or spatulate, entire 

 radical leaves.— Natives of the mountainous regions east of the Sierras, from the Saskatche-wan to New 

 Mexico. 



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