168 DICOTYLEDONOUS PLANTS. 



Pursh has apparently investigated it with more attention than 

 any succeeding botanist, I have preferred adopting his views 

 concerning the species. H. serpcntaria is said to be a cure for 

 the bite of the rattle snake. Pursh. Lion's Foot. 



6. H. racemosa Don : stem simple ; leaves all undivided, smooth : 

 radical ones oval-lanceolate ; cauline ones subclasping ; racemes ob- 

 long, very hairy, in nodding fascicles ; involucre 8 9-leaved, 9 12- 

 flowered. Prenanthes racemosa Afich. 



HAB. Can. Mich. N. S. Torr. Sept. !. Stem 2 feet high. 

 Flowers purple. 



3. LEONTODON. Schreb. 



Involucre imbricate, with a few loose scales at base. Re- 

 ceptacle naked. Pappus simple, stipitate. 



Syngenesia. JEqualis. 



L. taraxacum Linn. : outer scales of the involucre reflected ; leaves 

 runcinate, smooth, the segments lanceolate and toothed ; scape 1-flow- 

 ered. 



HAB. Pastures, &c. Throughout the U. S. April Nov. If. 

 Leaves all radical, smooth. Scapes often several from each 

 root, with one terminal large yellow flower. Introduced. 



Dandelion. 



4. OPORINIA. Don. 



Involucre deeply many-parted, with a few appressed scales 

 at base. Receptacle dotted. Anthers bisetose at base. Acines 

 somewhat fusiform, compressed, sulcate ; furrows transverse- 

 ly rugose. Pappus with the rays distinct, in a single row, 

 persistent, plumose, scariose .and dilated at base. Flowers 

 pedunculate, yellow. Syngenesia. JEqualis. 



0. autumnale Don : scape branching ; peduncles scaly ; leaves lan- 

 ceolate, toothed or pinnatifid, smoothish. Apargia auttitrmdti //'/'/A,'. 



HAB. Fields and road sides. N. S. July Sept. H.Sfupe. 

 spreading, branching into a few peduncles which are furnished 

 with a few remote scales. Flowers bright yellow, resembling 

 the Dandelion. Introduced. 



5. CYNTHIA. Don. 



Involucre many-parted ; segments in a double tow. Re- 

 ceptacle scrobiculate. Anthers 2-toothed at base, Stigmas 

 linear-ligulate, pruinose. Acines oval, complanate. Pappus 

 double ; outer one chaffy, very short ; inner pilose, rough. 

 Flowers yellow. Syngenesia. JEqualis. 



1. C. amplexicaule Beck : smooth and glaucous ; scape somewhat 

 fleshy, simple or bifid ; branches 2 3-flowered ; radical leaves subly- 

 rate, spatulate ; cauline ones clasping, lanceolate, entire, smooth. 



