COMPOSITAE (composite FAMILY) 



805 



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

 the commonest form northw. Var. skjunctls Burgess. Similar to tne pre- 

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

 Me. to Pa. and Wise. Var. apricensis Burgess. Freehj branching from near 

 the base, bearing innumerable heads. — Me. to Pa. Var. iantiiinl's (Burgess) 

 Fernald. Glands minute, rarely slipitate ; leaves thin. (Including^, ianthinus 

 violaris, multiformis, and nobilis Burgess.) — Me. to Ont. and VV. Va. ' 



§ 3. EUAS'I'ER Gray?. Bracts imbricated in various degrees, with herbaceous 

 or leaf-like summits, or the outer entirely foliaceous ; rays numerous; pap- 

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

 group) ; achenes flattened. 



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

 ing tips; pappus of rigid bristles; stem-leaves all sessile, none heart-shaped 

 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. Herv^yi 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. — Bordei-s ol 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. 



•*- I- Badical 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 8-6 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-puberulent 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 southw\ Aug.-Oct. Fig. 920. 



10. A. gracilis Nutt. Rootstocks occasion- 

 ally tuberous-thickened ; stems slender, 8-4 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, 



sharply serrate in the middle, very rough both sides and rugose- 927. A. gracilis 



924. A. Herveyi. 



925. A. spectabilis. 



926. A., sarculosus. 



