tiuUdago. COMPOSITE. 155 



who followed a wrong cletermination. .S'. verrucosa, Sclirad. llort. Gnett. 12, t. 6 ? ,S'. Muhlcn- 

 hergii, Tovr. & Gray, Fl. ii. 214. — Moist woodlands, New England and Cana.lu to Ohio, 

 through Pennsylvania to the mountains of \'irginia. 



Var. Caroliniana. Leaves of firmer texture, simply serrate as in ,S'. Boollii, but 

 larger; lieads thieker, ^itli 4 or 5 short rays ami 10 to 14 disk-flowers; involueral bracts 

 firmer, oblong: akeucs pubescent. — Mountains of X. Carolina and of adjacent S. Carolina 

 and Georgia, G. R. Vaseij, J. Donnell Snu'lh. Pevliaijs distinct both from this and the pre- 

 cediug species. 

 d. Stems not strict, simple or corymbosely branched at summit": infloi-escence an open spreading 



panicle, usually as broad as high, composed of recurving naked and minutely subulate-bracteate 



secund-racemiform clusters of crowded small heads, the rliachis and pedicels slender: rays 



numerous and small. 

 S. juncea, Ait. ilostly smooth and nearly glabrous: stem 1 to 3 feet high, rigid, com- 

 monly simple up to the mostly crowded branches of the wide panicle : leaves of rather firm 

 texture ; radical oral to oblong-spatnlate, tapering into a winged petiole, usually large and 

 sharply serrate ; cauliue from narrowly oblong to lanceolate (larger 3 or 4 inches long), not 

 rarely almost entire or sjjarsely serrulate, the small upper not much narrowed at base : panic- 

 ulate racemes slender: heads .seldom over 2 lines long : Ijracts of the involucre .small and 

 " pale: rays 7 to 12, hardly surpassing and little fewer than the disk-flowers: akeues gla- 

 brous or slightly pubescent. — Kcw. iii. 213 ; Pursh, 1. l. ; Hook. Fl. ii. 3 ; Gray, Proc. 1. c. 

 .S'. ciliaris. ilulil. in ^Villd. Spec. iii. 2056 : Darlingt. 1. c. ; DC. 1. c. 331 (excl. syn. S. glabra). 

 S. ari/ula, Torr. & Gray, Fl. ii. 214, not Ait., &c., as was wrongly supposed. — Common in 

 dry or rocky ground, Hudson's Bay and Saskatchewan to Wisconsin, and through the 

 Northern States to the upper country of Carolina and Tennessee. — The original type by 

 Solander is a small form from Hudson's Bay. The specific name alludes to the infloresceuce, 

 remotely resembling that of some species of Juncus. S. ciliaris is a common broad leaved 

 form, the larger leaves a little ciliate. — "\'ar. sCAnnELL.v (S. araula, \ai\ scahrella, Torr. 

 & Gra)', 1. c.)*is a form with rigid and ronghish leaves, growing in arid soil. \\'isconsiu 

 and Illinois to Keutuclvy ; in which district the leaves become more or less triple-ribbed 

 and rigid, and seemingly pass into .">'. Missvuriensis. 



H— -f— -i— Ni)t maritime: leaves more or less triple-ribbed, or with a pair of lateral veins con- 

 tinued by inosculation parallel to the midrib, yet these sometimes obscure or evanescent. — 

 TrljAinervicB. « 



++ Smooth aud glabrous, at least as to the stem and bright green leaves (the latter sometimes a 

 little pilose-pubescent in S. serotinn), not cinereous or canescent: inflorescence wlien well de- 

 veloped of naked and secund commonly recurving racemiform clusters, collected in a terminal 

 compound panicle: akeues more or less pubescent. 

 = Leaves of firm texture, rather rigid, lanceolate, acute or acuminate, the slender lateral ribs not 

 rareb- evanescent in the upper leaves : bracts of the involucre rather firm : the short outermost 

 ovate or oval aud the inner oblung-linear, all obtuse. A form of the first species connects with 

 the last preceding. 

 «. Rays rather small: stems leafy to the summit: leaves commonly with scabrous margins, the 

 larger mostly with some scattered teeth or denticulations. 

 S. MisSOUriensis Xutt. Low or middle-sized, smooth : leaves thickish, mostly tapering 

 to both ends, and the serratures when present sharp and rigid, somewhat nervose ; lower 

 spatulate-lanceolate (larger 4 to 6 inches long) ; upper mostly linear and entire, acute ; some- 

 times all entire: racemiform clusters approximated in a short and broad panicle (like those 

 of S. juncea, but usually shorter), recurving in age: rays 6 to 13, small. — Jour. Acad. 

 Philad. v'ii. 32, & Trans. Am. Phil. Soc. vii. 327 (excl. hab. N. Carol.) ; Torr. & Gray, Fl. 

 Ii. 322. S. serotinn, Hook. Comp. Bot. ^lag. i. 97, not Ait. S. glaberriina, Martens in Bull. 

 Acad. Brux. viii. (1841), 68. — Dry prairies, Indiana and Tennessee to Texas, and westward 

 to the Kocky Mountains; in the more eastward stations passing into or else hybridizing 

 with .5. juncea. 

 ^=~" Var. montana, Gray. Dwarf, 6 to l.T inches high: leaves entire or with few small 

 serratures; cauline obscurely triplinerved, an inch or two long : panicle small and compact 

 (at most 2 or 3 inches long) ; its clusters sliort, crowded, seldom recurved or much secund. — 

 Proc. Am. Acad. xvii. 195. .S'. Missonriensis, Xutt. Jour. Acad. Philad. 1. c, as to the 

 original from "upper branches of the Missouri, Wi/eth." — Dakota to the Saskatchewan and 

 west to Idaho. 



