110 ENGLISH BOTANY. 



soon simple and with a solitary anthode. Lower leaves attenuated 

 into a rather lonii; winged petiole with the wing extending ncarly 

 to the base. Anthodcs broader than long. Pericline about ^ ineh 

 long, the phyllaries with slender crimson points. Florets of the 

 disk yellow, those of the ray bright-purple, very numerous. Achenes 

 pubescent, yellowish, about as long as the pappus. Plant green, 

 rather thickly clothed with articulated hairs in British specimens, 

 but on the Continent the leaves are sometimes nearly glabrous 

 with ciliated edges. 



E. unifiorum (Sm. not Linn.) is undistinguishable ; the true 

 E. uniflorus of continental botanists has the pericline glandular and 

 the tubular flowers all perfect. 



Alpine Fleabane. 



French, Vergerette des Alpes. 



GENUS XXIII.—A. S T E R. Linn. 



Anthodcs heterogamous and radiant, or rarely discoid and 

 homogamous, many-Howered. Pericline hemispherical or cam- 

 panulate, consisting of numerous rows of imbricated herbaceous 

 phyllaries. Clinanth flat, pitted ; pits more or less distinctly 

 surrounded by a denticulated membrane. Florets of the disk 

 perfect, with a tubular corolla ; those of the ray in a single row, 

 female or neuter, ligulate, more rarely absent. Achenes more or 

 less compressed, without ribs. Pappus of several rows of shortly- 

 ciliated nearly equal hairs. 



Perennial (rarely annual) herbs with alternate leaves and 

 corymbose or paniculate or racemose anthodcs, with the florets 

 of the disk yellow, sometimes changing to purple ; those of the 

 ray white, purple, or blue. 



The name of this genus of plants conies from aernjo {ustcr), a star, tlie flowers 

 assuming the stellate or radiate form. 



Section I. — AMELLUS. Adam. 



Florets of the disk tubuhir and perl'ect ; those of the ray ligulate 

 and female, more rarely absent. 



SPECIES I.— ASTER TRIPOLIUM. Linn. 

 Plate DCCLXXVI. 

 Reich. Ic. Fl. Germ, ct Helv. Vol. XVI. Tab. CMVII. 

 Tri|)uliuiii viilgare, Xecs. D. C. I'rod. Vol. V. ji. 2j3. 



