COMPOSITE. (CO-UPOSITE FAMILY.) 201 



simple, of equal capillary bristles. — Perennial herbs, with mostly wand-like 

 stems and nearly sessile stem-leaves, never heart-shaped. Heads small, racemed 

 or clustered : flowers both of the disk and ray (except No. 2) yellow. (Name 

 from solido, to join, or make whole, in allusion to its reputed vulnerary quali- 

 ties.) Flowering Aug. - Oct. See Addend. 



$ I. CHRYSASTRUM, Torr. & Gr. — Scales of the much imbricated rigid in- 

 volucre with abruptly spreading herbaceous tips : heads in clusters or glomerate ra- 

 cemes disposed in a dense somewhat leafy and interrupted wand-likc compound spike. 



1. S. sqiiarrosa, Muhl. Stem stout (2° -5° high), hairy above; leaves 

 large, oblong, or the lower spatulate-oval and tapering into a margined petiole, 

 serrate, veiny; disk-flowers 16-24, the rays 12-16. — Rocky wooded hills, 

 Maine and W. Vermont to Penn., and the mountains of Virginia. 



§2. VTRGAtTREA, Toum. Scales of the involucre destitute of herbaceous tips : 

 rays mostly fewer than the disk-jlowers : heads all more or less pedicelled. 



* Heads in close clusters or short clustered racemes in the axils of the feather-veined 



leaves. (Rays 3-6.) 



2. S. bicolor, L. Hoary or grayish with soft hairs ; stem mostly simple ; 

 leaves oblong or elliptical-lanceolate, acute at both ends, or the lower oval and 

 tapering into a petiole, slightly serrate ; clusters or short racemes from the axils of 

 the upper leaves, forming an interrupted spike or crowded panicle ; rays small, 

 cream-color or nearly white. — Var. concolor has the rays yellow. — Dry copses 

 and banks, common : the var. in Pennsylvania and westward. 



3. S. lafif olia, L. Smooth or nearly so, stem angled, zigzag, simple or 

 paniculate-branched (l°-3° high) ; leaves broadly ovale or oval, very strongly and 

 sharj/ly serrate, conspicuously pointed at both ends (thin, 3' -6' long); heads in 

 very short axillary sessile clusters, or somewhat prolonged at the end of the 

 branches. — Moist shaded banks, in rich soil; common northward, and along 

 the mountains. 



4. S. C««Sia, L. Smooth; stem terete, mostly glaucous, at length much 

 branched and diffuse; leaves lanceolate or oblong-lanceolate, serrate, pointed, 

 sessile ; heads in very short axillary clusters, or somewhat raccmosc-paniclcd 

 on the branches. — Moist rich woodlands ; common. Heads rather smaller than 

 in the last. 



* * Racemes terminal, erect, eithei- somewhat simple and ivand-like, or compound and 



panicled, not one-sided: leaves feather-veined. (Not maritime.) 

 ■*- Heads small: leaves marly entire, except the lowermost. 



5. S. virgata, Michx. Very smooth throughout; stem strict and simple, 

 wand-like (2° -4° high), slender, beset with small and entire appressed lanceo- 

 late-oblong leaves, which are gradually reduced upwards to mere bracts ; the 

 lowest oblong-spatulate, all thickish and smooth ; heads crowded in a very nurrow 

 compound spicate raceme ; rays 5-7. — Damp pine barrens, New Jersey to Vir- 

 ginia and southward. 



6. S. pilberula, Nutt. Stem (l°-3° high, simple or branched) and 

 panicle very minutely hoary ; stem-leaves lanceolate, ac tte. tapering to the base, 

 smoothish; the lowe» wedge-lanceolate and sparingly toothed; heads very nu- 



