XXX SYNOPSIS OF GENERA, 



Gnaphalium. Receipt, naked. Down rough, or feathery. Cal. imbri- 

 cated ; scales filmy, coloured. Fl. of the circumference awl-shaped, p. 14 h. 



(See Petasites, Aster, and some sp. of Senecio, in the following section.) 



* * Corollas of the circumference or ray ligulate — (Radiate.) 

 Erigeron. Recept. naked. Down simple. Cal. imbricated. Flor. 

 of the radius numerous, linear, very narrow. Anth. simple, p. 144. 



Tussilago. Invol. formed of a simple row of equal, linear scales. Re- 

 cept. naked. Fl. radiant. Cor. of the circumference long, linear, numerous; 

 of the disk few. Pappus simple. Scape single-flowered, p. 148. 



Petasites. Nearly dioecious. Invol. imbricated with 2 rows of lanceo- 

 late scales Fl. not radiant. Pappus simple. Scapes many-flowered. 

 p. 148. 



Senecio. Recept. naked. Down simple. Cal. double; the innermost 

 cylindrical, of numerous equal scales ; outer of several minute ones ; scales all 

 withered at the extremity, p. 146. 



Aster. Recept. naked. Down simple. Cal. imbricated; lowermost 

 scales spreading. Flor. of the radius more than 10. p. 144. 



Solidago. Recept. naked, pitted. Down simple. Cal. imbricated, with 

 close scdes. Flor. of the radius about 5. p. 145. 



Inula. Recept. naked. Down simple. Cal. imbricated. Flor. of the 

 radius very numerous, linear. Anthers with 2 bristles at the base. p. 143. 



Limbaeda. Invol. with imbricated, narrow scales. Anth. with bristles 

 at the base. Recept. naked. Pappus simple, rough, p. 143. 



Pulicaria. Invol. hemispherical, closely imbricated with narrow scales. 

 Anth. with bristles at the base. Pappus double; outer one s-hort, cup- 

 shaped, membranous, toothed ; inner long, rough. Fl. yellow, p. 143. 



Bellis. Recept. naked, conical. Down none. Cal. hemispherical; 

 scales equal. Seed obovate. p. 149. 



Chrysanthemum. Recept. naked, rather convex. Down none. Cal. 

 hemispherical, imbricated ; scales with a dilated membranous border, p. 149. 



Pyre thrum. Recept. naked. Seed crowned with a border. Cal. he- 

 mispherical, imbricated; scales rather acute, membranous at the edges. 

 p. 149. 



Matricaria. Recept. naked, nearly cylindrical. Down none. Cal. 

 nearly flat, imbricated ; scales membranous at the edges, p. 150. 



Anthemis. Recept. chaffy. Seed crowned with a slight border. Cal. 

 hemispherical ; scales nearly equal. Flor. of the radius numerous, oblong. 

 p. 152. 



Achillea. Recept. chaffy. Down none. Cal. ovate; scales imbri- 

 cated, unequal. Flor. of the radius 5 — 10, roundish, somewhat heart-shaped. 

 p. 153. 



Order III. Frustranea. 



Florets of the disk perfect and fertile ; those of the circumference neuter. 

 (Part of Ci.n'arocephal.e, Juss.) 

 Cent aure a. Recept. bristly. Down simple, or feathery, rarely wanting. 

 Flor. of the radius funnel-shaped, dilated, regular, without stamens or style. 

 p. 157. 



