﻿16-20, simply \ign\ate. Pur sh ! Jl. 2. p. 577 ; BoL mag. t. 2257 ; EIL sh 

 2. p. 459 ; DC. '. prodr. 7. p. 41. Perdiciutn semiflosculare, IValt. ! Car. 

 p. 204. Tussilago integrifolia, Willd. ! spec. 3. p. 1964; Michx.! Jl. 2. 

 p. 121. 



Damp pine barrens, &c. North Carolina! to Florida! and Louisiana! 

 March-May. Scape a span to a foot high. 



Tribe VII. NASSAUVIACE^. Less. 



Heads horaogamous, radiatiform ; the flowers all similar and per- 

 feet. Style nearly as in the Senecionese. 



176. ACOURTIA. Bon, in trans. Linn. soc. 16. p. 203 ; DC. prodr. p. 65. 



Heads 10-30-iiowered, discoid, horaogamous; the flower* perfect. Invo- 

 liicre turbinate ; the scales imbricated in several series, lanceolate, appressed, 

 dilated at the base, articulated with the rachis, deciduous! Receptacle 

 naked. Corolla of all the flowers bilabiate; the outer lip ligulate and 3- 

 toothed; the inner 2-parted, with the revolute lobes linear and obtuse. An- 

 thers tipped with a linear-lanceolate cartilaginous appendage ; the tails sim- 



Achenia nearly terete, elongated, papillose-scabrous. Pappus a single se- 

 ries of bristles, penicillate at the apex, deciduous.— Shrubby (Mexican and 



cordate-clasping, with the auricles free, apinulose-serrate. Heads 3-10, fas- 

 ciculate-corymbose : scales of the involucre often reddish, ciliate. Corolla 

 purple or rose-color ; pappus white. DC. 



1. A. microcephala (DC.) : stem herbaceous? branching; the branches 

 angular, somewhat velvety with a glandular pubescence ; leaves cordate- 

 clasping, ovate, acute, sharply toothed, glandular, somewhat pu^^rulent 



m^cTonate-ac^minatTglandufar^^W ba?k!^ Dal T"" . 



California, Douglas.— Th\% and the Chaptalia are the only North Ameri- 

 can representatives of a suborder, which is eminently characteristic of the 

 western portion of South America. 



SuboederIII. LIGULIFLORvE. DC. 



1 ligulate and perfect, disposed in a homoga 

 Pollen scabrous and many-sided, usually doc 



