COMPOSITAE (composite FAMILY) 



805 



beneath, all but the lowest truncate or tapering at base. — Throughout the range, 

 the commonest form north \v. Var. skjinctls Burgess. Similar to the pre- 

 ceding variety, but most of the stem-leaves long-petioled, broad and cordate. — 

 Me. to Fa. and Wise. Var. apricensis liurgess. Freeln branching from near 

 the base., bearing innumerable heads. — Me. to Pa. Var. ianthincs (Burgess) 

 Fernald. 6V/a?2f/s m?>i?<^e, rarely stipitate ; leaves thin. {IncXuiWwg A. ianthinus., 

 violaris^ multiformis, and nobilis Burgess.) — Me. to Ont. and W. Va. 



§3. EUASTER Gray, Bracts imbricated in varicms degrees., v;ith herbaceous 

 or leaf-like summits, or the outer entirely foliaceons ; 7'at/s mimcrous ; pap- 

 pus simple, soft and nearly uniform {coarser and more rigid in the first 

 group); achenes flattened. 



* Bracts well imbricated, coriaceous, with short herbaceous mostly obtuse spread- 

 ing tips; pappus of rigid bristles; stem-leaves all sessile, none heart-shaj^ed 

 or clasping ; heads few or when several corymbose, large and showy. 



•t- Lowest leaves ovate or ovate-oblong, on nearly naked petioles, some rounded 



or subcordate at base. 



7. A. Herveyi Gray. Slightly scabrous, 3-9 dm. high, the 

 summit and peduncles glandular-puberulent ; leaves roughish, 

 obscurely serrate, the upper lanceolate ; heads loosely corym- 

 bose, 1 cm. or so high ; involucre nearly hemispherical ; bracts 

 obscurely glandular, all erect, with very short or indistinct 

 green tips; rays violet, 1-1.5 cm. long. — Borders of oak 

 woods, in rather moist soil, e. Mass. to 

 Ct. and L.I. Fig. 924. — An ambigu- 

 ous species, approaching the preceding 

 and the next. 



•*- ■<- Radical leaves (usually absent in 

 no. 11) all tapering into margined 

 petioles; involucres squarrose (hardly 

 so in no. 11) ; rootstocks slender. 



8. A. spectabilis Ait. Stems 3-<3 dm. 

 high, roughish and glandular-puberulent 

 above ; leaves oblong-lanceolate or the 



lower spatulate-oblong, obscurely serrate or the upper en- 

 tire ; heads few, hemispherical; involucre 1-1.5 cm. high; 

 bracts glandular-puherident and viscid, mostly with the 

 upper half herbaceous and spreading ; rays about 20, bright 

 violet, 2 cm. long. — Sandy soil, Mass. to Del., near the 

 coast ; also w. N. C. Aug. -Oct. Fig. 925. 



9. A. surcul5sus Michx. Stems 2.5-4 dm. high, from long 

 filiform rootstocks ; leaves entire or nearly so, rigid, lanceolate 

 or the upper linear ; heads few or solitary, as in the preceding, 

 but generally smaller, the bracts hardly glandular. — Moist 

 ground, coast of N. J., and south w. Aug.-Oct. Fig. 92C. 



10. A. gracilis Nutt. Kootstocks occasion- 

 ally tuberous-thickened ; stems slender. 3-4 dm. 

 high ; leaves oblong-lanceolate, entire or nearly 

 so, small (2-5 cm. long) ; heads few or several ; 

 involucre top-shaped, 6-9 mm. long, glabrous, 

 not glandular nor viscid, the coriaceous whitish 

 bracts with very short deltoid, or ovate tips ; rays 

 9-12, 0.5-1 cm. long. — Pine barrens, N. J. to 

 N. C, Ky., and Tenn. July-Sept. Fig. 927. 



11. A. radula Ait. Stem simple or corym- 

 bose at the summit, smooth or sparsely hairy, 



many-leaved, 3-12 dm. high ; leaves oblong-lanceolate, pointed, 



shaiply serrate in the middle, very rough both sides and rugose- 92T. A. gracilis 



924. A. Herveyi. 



925. A. spectabilis. 



926. A. surculosus. 



