366 COMPOSIT.E. Soliva. 



S. NASTUETiipdLiA, DC. 1. c. Much depressed, spreading, small: leaves glabrate, pinnately 

 parted into 5 to 9 oblong divisions of about a line in lengtli; these entire or the lower few- 

 toothed : heads globular : akeiies small, very numerous, villous at apex, cuneate, the margins 

 much thickened and tuberculate-rugose : style short and slender. — Torr. & Gray, 1. c. 

 Gymnostyks nastartiifoUa, Juss. Ann. Mus. iv. 2(12, t. 61, f. 2. G. stoloni/era, Nutt. Gen. ii. 

 185; Ell. Sk. ii. 473. — A humble weed, near dwellings, coast of N. Carolina to Georgia. 

 (Nat. from Buenos Ayres.) 



1 76. C6TUL A, L. (KotijA.7;, a small cup or disk.) — Low herb.3 of the 

 southern hemisphere, one or two naturalized in the northern, strong-scented ; 

 leaves alternate, lobed or dissected ; flowers yellow : ours more or less perennial 

 by creeping base, or annual. — Benth. & Ilook. Gen. ii. 428. 



""""C. coEONOPir6LiA, L. Somewhat succulent, nearly glabrous: ascending stems often a foot 

 high : leaves lingulate-linear, laciuiate-piunatiiid, or uppermost eutire, the base clasping or 

 sheathing : head much depressed, a third to half inch broad : female flowers a single row, on 

 flattened pedicels which lengthen in fruit, their akenes bordered with a thick spongy wing 

 and notched at both ends : disk-akenes with wing reduced to a thickened border. — Lam. 111. 

 t. 700; Dill. Elth. t. 2.3; DC. Prodr. vi. 28. — Wet ground, thoroughly established on the 

 coast of California, and on some water-courses in the interior : a rare ballast-weed on the 

 Atlantic coast. (Nat. from S. Afr. ) 



— ■ — . C. austrAlis, Hook. f. Slender, diffusely branched, somewhat pubescent: leaves 2-pinnately 

 dissected into linear lobes : heads small ; female flowers in 2 or 3 rows, their akenes dis- 

 tinctly pedicelled ; those of the disk less so. — I"l. N. Zeal. i. 128 ; Gray, Bot. Calif, i. 405. 

 Strontpjlosperma austrah, Less. ; DC. 1. c. 82. — Waste ground, coast of California. Kellogrj, 

 Cleveland. Oregon, E. Hall. (Sparingly nat. from Australia.) 



177. TANACfiTUM, Tourn. Tansy. (Name of the old herbalists, of 

 quite uncertain derivation.) — Chiefly perennials, of the northern hemisphere, 

 strong-scented, alternate-leaved, yellow-flowered. Disk-flowers 5-toothed. — Torr. 

 & Gray, Fl. ii. 414. 



§ 1. Eobust erect perennials, leafy to the summit: leaves 2-3-pinnately dis- 

 sected into very numerous divisions and lobes ; also with interposed small ones 

 on the main rhachis : pappus coroniform-deutate : receptacle flat,(|uite naked. — 

 § Eutanaeetiiin & Omalotes. DC. Prodr. vi. 128. 83. 



••=*T. vulgAke, L. (CojrMON Tan-sy.) Acrid-aromatic, glabrous or somewhat pubescent, 2 or 

 3 feet high : divisions and lobes of the lea\-e.s decurrent-coufluent, the teeth cuspidate-acumi- 

 nate : heads numerous and crowded in the corymbiform cymes, 3 to 5 lines broad, depressed- 

 hemispherical : ray-corollas terete, inconspicuous, with oblique 3-toothed limli. — Escaped 

 from gardens to roadsides, &c., in Atlantic States and Canada. (Xat. from Eu.) 



»=""Jr. Huronense, Ndtt. Comparatively sweet-aromatic, villous when young, sometimes glar 

 brate, commonly a foot liigh : leaves with fewer interposed segments on the rhachis ; lobes 

 and teeth narrowly oblong to linear, mucronate nr acuminate: lieads much fewer (1 to 5) 

 and larger ; tlie disk convex, half-iucli broad : corollas of female flowers with a flattisli tube 

 and a 3-5-lobed limb, which not rarely expands into a cuneate rather obvious ligule (thus 

 making a transition to C/irysanthemum and showing relationsliip to C. bijiiimaUim). — Gen. 

 ii. UI ; Torr. & Gray, Fl. ii. 414. T. Douglas!!, DC. Prodr. vi. 128. T. pauciflorum, 

 Richards. App. Frankl. .Tourn. ed. 2, 30 : Hook. Fl. i. 327, not DC. T. boreale, Nutt.' Trans. 

 Am. Phil. Soc. n. ser. vii. 401, not Fischer in DC, which is rather a form of T. vulgare.— 

 Banks of streams, Sc, N. Maine ( Gnndale), New Brunswick, and Lake Superior to Hudson's 

 Bay, west to Washington Terr, and (Oregon on the coast. 

 T. camphoratum, Less. Pleasantly camplioric-aromatic, villous-tomentose, at least when 

 young, glandular, robust, 1 or 2 feet high : piim* and segments of the leaves much crowded ; 

 the latter oval or short-oblong, entire or crejiately few-lobed, rounded-obtuse, at most callose- 

 apiculate, usually with rovolute margins : heads several in a corvmblform cluster, short- 



