292 COMPOSITiE. . [Sonchus, ' 



1. p, 28. Nutt, Gen. Am. v. I, p. 20. De Cand, Prodr, v, 4, p, 638. — (3. foliolis subinte- 



gerrimis. 



Radix crassa, subrepens, fibres emittens. CatiUs 2-3-pedalis, erectus, simplex, striatus, fistulosus, nitidus, 

 ad nodos solummodo pubescenti-hirsutus. Folia (nisi ad ortum foliorum ubi fasciculus pllorum alborum) 

 g-laberrima ; radicalia petiolata, lato-cordata, simplicia, obtusa, siuuato-crenata ; cauUna pinnatisecta, foliolis 

 pleriimque 3; superiora sensim minora rainusque petiolata, foliolis oratis acutis sinuato-dentatis, in /3, sub- 

 integferrimis, terminali latiore majore; supremis tematisectis Tel simplicibus, sessilibus. Panicitla ter- 

 minalis, cymosa, sublaxa, pedunculis pedicellisque hinc villosa, bracteata, bracteis oppositis basi connatis 

 lineari-subulatis. Flores inter majores hujusce generis, ut videtur rosei. Corollce tubus hiuc gibbosus. 

 Stamina 3 exserta. Fructus ovatus, compresso-planus, glaberrimus, dorso linea 1 elevata, facie supema lineis 

 duabus, pappo coronatus. 



Hab. Woods in the Rocky Mountains, north of the Smoking Kiver, (lat. 56° North,) and on Wolf 

 Plain. Drmnmond. /3, Moist rocks and islands of the Columbia River. DovglaSy Dr. Scouler. 



Tab. CI. V. pauciflora. Fig. 1, Flower with bracteae; Jig, 2, Back view of a fruit; Jig. 3, Front view 

 of do. : — mngnijied* 



3. V, capitata; caule erecto glabro ad nodos pubescente, foliis radicalibus petiolatis 

 subrotundis simplicibus, caulinis subsessilibus simplicibus vel ternatim-sectis, foliolis sinuato- 

 serratis ovatis supremo maximo, panicula dense capitata, bracteis longissimis, corollse tubo 

 elongato, fructu ovato compresso glabro. — Willd. Herb, — Cham, et Scklecht in LinncBa, r. 

 3. p, 130. De Cand, Prodr, v, 4. p. 637. Hook, et Arn. in Bot. of Beech. Voy. v. 1. p. 125. 



Hab. Kotzebue's Sound. Chamtsso, Messrs. Lay and Collie. Arctic shores of America, between the 

 Coppermine and Mackenzie Rivers. Dr. Richardson. — This is, as Schlechtendal and Chamisso observe, 

 much allied to V. TripteriSf but it has a shorter and more compact habit ; the flowers are in a dense head, 

 and the bracteas and tubes of the corollas are considerably longer. 



Ord. LI. COMPOSIT.E. 

 Trib. I. CicHORACE^. Juss. 



1. SONCHUS. 



Involucrum polyphyllum cylindraceum basi ssepe dilatatum, squamis appressis imbricatis 

 imbranaceis. Receptaculum subscrobiculatum vel nudum. Flosculi plurimi. Achenia 



lineari-oblonga subcompressa striata. Pappus (albissimus) sessilis insequalis simplex vel 

 scaber. — Frutices aiit Herbse radice perenni rarius annua^ foliis scepe pinnatifidis glahris. 

 Yloresjlavi vel ccerulei. 



1 



. S. oleraceus ; radice annua, foliis amplexicaulibus lyrato-uncinatis argute dentatis, 

 pedunculis junioribus tomentosis. — Linn. Sp. PL p. 1116, Pursh, PL Am. v. 1. p. 501. 

 EllioU, Carol v. 2. p. 204. Engl Bot. L 843. Bigel. PL Bost ed, 2. p. 289. 



Hab. Throughout Canada, as far as the Saskatcbawan. Newfoundland. Mr, Cormack. Mouth of the 



^-•1 1 • ^T il ITT J. A • T^ CT 7 



America. 



2, S. arvensis ; radice perenni repente, foliis basi cordatis amplexicaulibus runcinatis 

 argute dentatis, floribus subcorymbosis, pedunculis involucrisque piloso-glandulosis, acheniis 

 rugoso-punctatis. Linn. Sp. PL p. 1116. Pursh, PL Am. v. 2. p. 501. EngL Bot. t. 674. 

 ». 289. 



