com r os it a e. 97 S 



3. Antennaria aprica Greene. Rocky Mountain Cudweed. (I. F. f. 3844 

 as A. dioica.) Floccose-woolly or canescent, surculose, forming broad patches. 

 Flowering stems 6-20 cm. high; basal leaves spatulate, obtuse, rather abruptly 

 narrowed from above the middle, white-canescent on both sides, or sometimes green 

 above, 8-30 mm. long, 48 mm. wide; stemdeaves linear to spatulate, sessile; 

 heads 6-8 mm. broad in a terminal capitate or corymbose cluster; involucre 8-10 

 mm. high, the bracts of the fertile heads oblong, white or pink, all obtuse, or the 

 inner ones acute; those of the sterile heads oval or elliptical, obtuse; achenes gla- 

 brous, or minutely glandular. Manitoba to Br. Col., Neb. and Ariz. May- Aug. 

 Plants previously referred to the European A. dioica are now divided among several 

 species. 



4. Antennaria neodioica Greene. Smaller Cat's-foot. (I. F. f. 3845.) 

 Floccose-woolly, with numerous stolons which are leafy throughout. Stem of fertile 

 plants slender, about 3 dm. high; stolons mostly short; basal leaves about 2.5 cm. 

 long, 6-10 mm. wide, narrowly to broadly spatulate, I -nerved, or indistinctly 

 3-nerved, white-tomentose beneath, dull and often glabrate above, abruptly nar- 

 rowed from above the middle, distinctly apiculate; stemdeaves linear, acute; heads 

 loosely corymbose, 6-8 mm. broad; outermost bracts of the involucre obtuse, the 

 rest lanceolate, acute or acuminate, greenish yellow or brownish below, with white 

 tips; achenes obtusely 4-angled, granular-papillose; staminate plant lower, 7-20 cm. 

 high; heads more densely clustered; bracts of the involucre oblong, obtuse. In 

 dry shaded places, Quebec to Vt., Va. and S. Dak. April-July. 



5. Antennaria neglecta Greene. Field Cats-foot. (I. F. f. 3846.) Sto- 

 loniferous. the stolons mostly long and slender. Basal leaves oblanceolate to obo- 

 ▼ate oblanceolate, obtuse or acutish, gradually tapering to a sessile base, white- 

 tomentose beneath, dull and glabrate above, i-nerved, or with two faint additional 

 lateral nerves; stem-leaves linear; fertile plant 2-4 dm. high; heads 6-8 mm. 

 broad, capitate, corymbose, or racemose; bracts brownish, with white tips, lance- 

 olate, acute, acuminate, or the outer blunt; sterile plant 1-2 dm. high, the heads 

 densely clustered, the bracts oblong, obtuse. In fields and pastures, Me. to N. Y., 

 Va. and Wis. April-June. 



6. Antennaria campestris Rydb. Prairie Cat's-foot. (I. F. f. 3847.) 

 Stolons short, leafy; flowering stems of both fertile and sterile plants 5-15 cm. 

 high ; basal leaves obovate-cuneate, wdiite-tomentose beneath, glabrate above, 

 I -nerved, or indistinctly 3-nerved; stem-leaves small, linear; heads 6-8 mm. broad, 

 in subcapitate clusters; bracts of the fertile heads lanceolate, greenish below, 

 brownish at the middle, the apex white, acute or acuminate; bracts of sterile heads 

 elliptic, obtuse. On dry prairies, Neb., Kans. and S. Dak. to Saskatchewan. 

 May-June. 



7. Antennaria microphylla Rydb. Small-leaved Cat's foot. Stem 

 slender, 2-3 dm. high. Stolons short, not over 5 cm. long; basal leaves and those 

 of the ends of the stolons spatulate, obtuse, or apiculate, 0.5-1.5 cm. long, 2-4 mm. 

 wide, narrowed from above the middle; stem-leaves linear-oblong, or the leaves 

 linear- spatulate, often longer than the basal ones; heads corymbose, rather numer- 

 ous; involucre 5-7 mm. high; bracts of the fertile heads linear-oblong, acute or 

 acutish, those of the sterile obtuse. In dry soil, Alberta and Saskatchewan to 

 Mont.. Neb. and Colo. July-Aug. 



8. Antennaria plantaginifolia (L.) Richards. Plantain-leaf Everlast- 

 ing. Mouse-ear Everlasting. (I. F. f. 3848.) Floccose-woolly, stoloniferous, 

 forming broad patches. Flowering stems of fertile plant 1.5-3.5 dm. high; basal 

 leaves obovate to broadly oval, obtuse, sometimes apiculate, distinctly 3-ribbed, 

 petioled, becoming glabrate and dull green above, silvery beneath, 4-7 cm. long, 

 1-3 cm. wide; stem leaves sessile, oblong or lanceolate; heads in corymbose or 

 subcapitate clusters, 8-10 mm. broad; involucre 6-8 mm. high, its bracts greenish 

 white, lanceolate, acute or acutish; achenes minutely glandular; sterile plant 

 smaller, 7-20 cm. high; basal leaves somewhat smaller; stem-leaves mostly linear; 

 heads smaller, 6-8 mm. broad; bracts oblong, obtuse. In dry soil, especially in 

 open woods. Lab. (?j, Ont to Fla.. 111.. Kans. and Tex. April-June. 



9. Antennaria calophylla Greene. Broad leaved Cat's-foot. Stolons 

 sometimes 1 dm. long, their leaves mostly in a tuft at the end, broadly ovale 



to obovate, 8-10 cm. long, 4-5 cm. wide, obtuse, apiculate, narrowed abruptly into 



