1374 APPENDIX. 



wanting: achenes about 2.5 mm. long, minutely pubescent. — Differs from S. Mississip- 



piensis in the rayless heads. 



In cultivated or waste grounds, Newfoundland to Hudson Bay, North Carolina, 

 Michigan and South Dakota ; and on the Pacific Coast. Naturalized from Europe. 

 Spring to fall. 



Page 1305, after Senecio Fremontii, insert: 



142a. EMILIA Cass. 



Annual or perennial herbs. Leaves alternate, but mostly basal: blades entire, 

 toothed or lyrate-pinnatifid. Heads solitary or in lax corymbs. Involucres swollen 

 at the base: bracts in one series and without accessory bractlets at the base. Ray- 

 flowers wanting. Disk-corollas orange, purple or red, with a cylindric throat and a 

 slender tube, the lobes lanceolate. Filaments slender. Achenes 5-ribbed. — Differs 

 from Senecio in the orange, purple or red corollas. 



1. Emilia soncbifolia (L.) DC. Plants mostly 1-8 dm. tall: leaf -blades rather 

 succulent, those of the lower leaves spatulate, those of the upper leaves lanceolate 

 to linear, auricled at the base, all sinuate-dentate: heads long-peduncled : involucral 

 bracts linear, 10-12 mm. long: corollas 9-11 mm. long: achenes 4 mm. long. 



In waste places and cultivated grounds, and on roadsides, peninsular Florida. Natura- 

 lized from the tropics. All year. 



Page 1307, after Carduus lanceolatus, insert: 



13a. Carduus vitt^tus Small. Stem 2-7 dm. tall, thinly pubescent: leaves 

 mainly basal; blades narrow, the margins undulate or sinuate, with mostly ascending 

 spines: involucres nearly 3 cm. high; bracts acuminate, the inner ones 30-35 mm. long: 

 corollas about 30 cm. long: achenes 3-3.5 mm. long, glabrous. — Differs from C. 

 pinetorum in the narrow blades of the basal leaves, the smaller involucres and the 

 corollas with the throat scarcely one half the length of the lobes. 



In the Everglades, southern peninsular Florida. All year. 



Page 1308, after Centaurea solstitialis, insert: 



la. Centaurea melit^nsis L. Stems 1 m. tall or less, arachnoid, usually spar- 

 ingly branched: leaf -blades various, those of the basal leaves spatulate, toothed or 

 pinnatifid, those of the stem-leaves oblanceolate, oblong or linear, narrowly decurrent 

 on the stem: heads sessile or short-peduncled : involucres ovoid, the outer and middle 

 bracts with slender apical prickles: corollas yellow. — Differs from C. solstitialis in 

 the more narrowly winged stem, the more slender purple or purplish prickles of the 

 involucral bracts and the smaller corollas. 



On roadsides and in waste places, locally throughout the United States, especially 

 about sea-ports. Naturalized from Europe. Spring to fall. 



Page 1309, after Thyrsanthema semiflosculare, add: 



3. Thyrsanthema dentAta (L.) Kuntze. Plants 1-3 dm. tall: leaves spreading; 

 blades spatulate to oblanceolate, 3-11 cm. long or more, undulate or denticulate, 

 lanate-tomentulose beneath: scapes slender, floccose: involucre lanate, the inner bracts 

 becoming 17-21 mm. long, narrowly linear: inner corollas 7-8 mm. long: achenes slen- 

 der, the body 3.5-4.5 mm. long, the beak nearly or quite as long as the body. — Differs 

 from T. semiflosculare in the long-beaked achenes and the much longer inner bracts of 

 the involucre and from T. nutans in the merely toothed leaf -blades. 



In rocky pine lands, southern peninsular Florida. All year. 



