STXGENESIA. SUPERrLLA. 165 



A ijenus principally indig'enous lo Europe and the Cape 

 of G();kI Hope, there are also 2 species in Soutii America, 

 2 in J;ipan, 1 in Arabia fr'elix, and a bhrubby species, or 

 something' else, in New Zealand. 



564. SENECIO. i. (Ragwort.) 



Cidix cylindric, subcaliculate: scales spljacc- 

 late at the points. Beceptacle naked. Fappus 

 siiiiple, capillary, and copious. 



SufTruticose or more connmonly herbaceous; leaves en- 

 tire or pianatifid; fiowers mostly corymbose or terminal; 

 yellow or rarely purple. A few species are destitute of 

 rays. 



SPEcres. 1. S. vulgaris. Introduced. 2. hieracifoUus. 

 Seeds pubescent. 3. elongates. Ph. A. paucijiorus. Ph. 

 5. pauptrculus. 6. gracilis. Ph. 7. obovatus. 8. Baha- 

 mitde. 9. aureus. 10. Ci/nibalaria. Ph. A, starved vari- 

 ety of the preceding? 11. canade7isis. 12. lobatus, Persoon. 

 Common around New Orleans. 13. Kahnii. Cineraria 

 canadensis. Obs. Nearly all the North American species 

 of this genus are imperfectly or minutely caliculate, and 

 to separate them on this ground appears arbitrary and 

 unnatural, as they are perfectly homogenous. 



14. iiitegrifolius. Ci7ieraria integnfolia. Common also 

 to Europe. /3. heterophylla. A variety of the preceding? 

 C. heterophylla. Ph. 2. p. 523. The stem leaves of the 

 American S. integrifuUus are always more or less toothed 

 at the base. 



15. * integerrirnis. Smooth; stem simple and attenuated; 

 leaves perfectly entire; radical ones long petiolate, lanceo- 

 late, acute, cauline sessile, acuminate, uppermost minute; 

 corymb simple, 8 to iS-nowered? peduncles 1-flowered, 

 rays shorter than the hemispherical caliculate calix. Hab. 

 In'depressed and moist situations on the plains of the 

 Missouri, near the Great Bend. Flowering in June. Flow- 

 er large and ycliov.-. Stem 12 to 18 inches high. Lower 

 leaves thickisli and somewhat carnose, very smooth, up^- 

 permost minute, slightly tomentose; corymb coarctatc. 

 Seeds smooth. Nearly allied to S. aquaticus. 



A genus of more than 140 species principally indigenous 

 to Europe and the Cape of Good Hope. 



o65. TUSSILAGO. L. (Colt's-foot, Riitter-biir.) 



Crt^j^u simple, scales equal, even witii tlie disk 



and submembranaceous* Feminine Horcts ligii- 



