1 1 82 CARDUACEAE 



2. Chrysopsis Tracyi Small. Foliage finely silvery silky. Stems wire-like, 3-5 dm. 

 tall, sparingly branched above : leaves few, but the basal and lower cauline conspicuous on 

 account of their extreme narrowness and great length ; blades mostly less than 1 mm. wide, 

 1.5-3 dm. long, the upper cauline leaves much shoi'ter, all terminating in a tuft of hairs : 

 heads few, mostly 2 or 3 : involucres 8-10 mm. high ; bracts lanceolate to almost linear, 

 more or less cobwebby : ray-flowers rather numerous ; ligules yellow, 9-11 mm. long. 



In sand, Palma Sola, Florida. Winter. 



3. Chrysopsis argentea Pers. Foliage silky with appressed graphite-lustrous hairs. 

 Stems 3-7 dm. tall, nearly simple or with few erect branches above : leaves numer- 

 ous ; blades narrowly linear, erect or appressed, 2-10 cm. long or 2-3 dm. long at the base 

 of the stem : heads rather few : involucres 6-8 mm. high ; bracts subulate, more or less 

 villous, ridged on the back ; ligules 5-8 mm. long, pubescent. 



In dry soil, South Carolina to Florida. Summer. 



4. Chrysopsis flexuosa Nash. Foliage silky-lanate. Stems 2-4 dm. tall, zigzag, 

 branching above : leaves various, tlie lower ones with oblong blades 2-5 cm. long, usually 

 scabrous above ; upper leaves spreading or ascending; blades narrowly linear-lanceolate or 

 linear, 2-6 cm. long, often curved, usually 5-nerved : heads few : involucres 10-12 mm. 

 high ; bracts linear-subulate, acuminate, sometimes with few long hairs, keeled : ray-flow- 

 ers few ; ligules linear to oblong, 7-9 mm. long. 



In pine woods, Leon County, Florida. Summer and fall. 



5. Chrysopsis latifolia (Fernald) Small. Foliage silky or silky-floccose. Stems 

 1.5-6 dm. tall, sometimes tufted, often branched above, relatively stout: leaves various, 

 comjiletely clothing the stem with their sheathing bases ; the lower ones witji broadly linear 

 linear-lanceolate or oblong undulate blades 5-12 cm. long, the upper relatively narrower 

 but not conspicuously shorter : heads few or many, terminating woolly jjeduncles : involu- 

 cres 8-10 mm. high ; ])racts linear-subulate, acuminate, more or less cobwebby : ray-flow- 

 ers several ; ligules linear, sometimes broadly so. [C. grdminifolia yav. /a^//b//o Fernald.] 



In dry sandy soil, peninsular Florida. Throughout the year. 



6. Chrysopsis graminifolia (Michx. ) Nutt. Foliage silvery-silky. Stems 3-9 dm. 

 tall, corymbosely branched : leaves various, the basal with narrowly linear blades 1-4 

 dm. long, many times longer than the upper ; stem-leaves not clothing the stem, with lin- 

 ear-lanceolate, linear or linear-subulate blades, the upper erect : involucres cylindric, 10-12 

 mm. high, 5 mm. thick ; bracts linear-subulate, glabrate or glandular-joubescent on the 

 back : ray-flowers with narrow ligules 8-12 mm. long. 



In sandy soil, Maryland to Florida and Texas. Summer and fall. 



7. Chrysopsis microcephala Small. Foliage silvery-silky. Stems usually solitary, 

 4-7 dm. tall, producing conspicuous offsets, the very slender corymbose-paniculate 

 branches somewhat woolly : leaves numerous, the basal with linear blades 1-2.5 dm. long : 

 stem-leaves linear-lanceolate, 2-8 cm. long, approximate, acuminate, partly clasping : in- 

 volucres narrowly cylindric, 3 ram. thick, 6 mm. high ; bracts linear-subulate, woolly : 

 ray-flowers with yellow ligules 3-4 mm. long. 



In sandy soil or pine lands. South Carolina to Florida and Texas. Summer and fall. 



8. Chrysopsis Rutbii Small. Foliage silvery-silky. Stems tufted, diffusely 

 branched, 1-3 dm. tall, densely leafy above : leaves numerous, usually completely clothing 

 the stem ; blades linear or narrowly linear-lanceolate, 2-5 cm. long, acuminate, sessile : 

 peduncles densely glandular : involucres 7-8 mm. high ; bracts linear-sul)ulate, glandular 

 on the back, bearded at the apex, pale-margined : ray-flowers few ; ligules elliptic-spatu- 

 late, 7-8 mm. long: pappus dirty white. 



On rocks, Hiawassee Valley, eastern Tennessee. Fall. 



9. Chrysopsis dspera Shuttl. Foliage silvery-silky below, glandular above. Stems 

 3-7 dm. tall, corymbosely branched above : leaves not clasping the stem ; basal-leaves with 

 narrowly linear blades 1-3 dm. long ; stem-leaves shorter ; blades linear to narrowly lin- 

 ear-lanceolate : heads often numerous : involucres turbinate, 5-9 mm. high : bracts linear 

 to linear-subulate, rough glandular on the back. 



In dry sand or clay. North Carolina to Florida and Louisiana. Summer and_fall. 



10. Chrysopsis oligdntha Chapm. Foliage silvery silky below, glandular above. 

 Stems 3-6 dm. tall, sparingly corymliose above : basal leaves with narrowly linear blades 

 2-3 dm. long: stem-leaves few ; blades linear or oblong, 3-10 cm. long, clasping: heads 

 few, long-peduncled : involucres 8-10 mm. high, campanulate ; bracts linear-subulate, 

 glandular-pubescent : ray-flowers with linear or linear-oblong yellow ligules. 



In low pine lands, Florida. Spring. 



11. Chrysopsis trichophylla Xutt. Foliage villous. Stems 3-7 dm. tall, corymbose 

 above : leaves numerous, tlie basal with spatulate blades 3-7 cm. long ; cauline leaves 



