376 COMPOSITiE. Petasites. 



radical leaves on strong petioles, cottony-tomentose or glabrate ; the flowers 

 whitish or purplish, in spring. — Ga;rtn. Fruct. ii. 40C, t. 166; Grenier & Godr. 

 Fl. Fr. ii. 89; Reichenb. Ic. Fl. Germ. t. 896-901; Benth. & Hook. Gen. ii. 

 438. Nardosmia (Cass.) & Petasites, DC. Prodr. v. 205, 206. 



§ 1. No ligule to female flowers: an introduced plant. — Petasites, DC. 



P. VULGARIS, Desf. Eootstock very stout: leaves at maturity very large, round-cordate, an- 

 gulate-dentate and denticulate : heads racemosely disposed : flowers purplish. — Tussilago 

 Petasites, L. — In cult, and waste grounds, spreading in the vicinity of Philadelphia, C. E. 

 Smith. (Nat. from Eu.) 



§ 2. Female flowers with distinct ligules : rootstocks in ours slender and creep- 

 ing : leaves developing with or soon following the whitish blossoms, in spring. — 

 Nardosmia, C^ass. ; so named from the fragrant flowers of the original species. 



-P. sagittata, Geay. Leaves from deltoid-oblong- to reniform-hastate, from acute to 

 rounded-obtuse, repand-dentate, very white-tomentose beneath, when full grown 7 to 10 

 inches long : heads short-racemose becoming corymbose : ligules equalling or shorter than 

 the disk. — Bot. Calif, i. 407. Tussilago sagittata, Pursh, Fl. ii. 332. Nardosmia sagittata, 

 Hook. PL i 307, and apparently a part of N. frigidn, Hook. — 'Wet ground, Hudson's Bay 

 to Fort Franklin, west to the Eocky Mountains in Brit. Columbia, and south to those of 

 Colorado. 

 P. frigida, Fries. Leaves small (1 to 3 or 4 inches long), rounded- or oblong-cordate to 

 reniform-hastate, sometimes even truncate at base, angulately or more deeply and sinuately 

 lobed, the lobes entire: heads few, corymbose. — " ^yll. 20," & Sum. Veg. Scand. 182. 

 Tussilago frigida, L. ; Fl. Dan. t. 61, not of Pursh, whose plant from Canada and New 

 England is either fictitious or the succeeding sjiecies. T. corijmhosa, 11. Br. in Parry Voy. 

 & Pichards. App. Frankl. Journ. Nardosmia angulosa, Cass. Diet, xxxiv 188. N. frigida 

 & N. corijmbosa., Hook. 1. c, at least mainly. — Arctic coast and west to Kotzebue Sound, the 

 Aleutian Islands, &c. (N. Eu. & Asia.) 



'P. palmata, Gray. Leaves (7 to 10 or even 18 inches broad) rouud-reniform in outline, 

 palmately 7-11-cleft to beyond the middle or deeper; the lobes oblong-lanceolate to oblong- 

 cuneate, laciniate-dentate : scape multibraeteate, bearing rather numerous heads. — Bot. 

 Calif, i. 407. Tussilago palmata, Ait. Kew. ii. 188, t. 2; Pursh, 1., c. Nardosmia jxiimata, 

 Hook. I.e.; Torr. & Gray, I.e. — "Wet woodlands, jSTewfoundland and Labrador, Canada, 

 j;\ew England, and Wisconsin to Brit. Columbia and California. (E. Asia.) 



181. GACALIOPSIS, Gray. (Ka^aAia, ancient Greek name of Colts- 

 foot ? and oi/ft-, likeness ; from resemblance, if not to the ancient Cacalia, at 

 least to that of Tournefort.) — Proc. Am. Acad. xix. 50. — Single known species. 



-C. Nardosmia, Gray, 1. c. Robust perenniiil, a foot or two high, floccose-woolly, at length 

 glabrate : leaves considerably resembling those of I'ltusites palmcda, alterniite, long-petioled, 

 all but 2 or 3 radical, orbicular-cordate or flabellate, 5-9-cleft or rarely parted ; the lobes or 

 divisions rather broad, iucisely lobed or dentate : heads (au inch high) few or several, pe- 

 dunculate, corymbosely or racemosely disposed at the naked summit of the stem ; corolla 

 honey-yellow: flowers honey-scented. — i'aralia Nardusuiia, Gray, Proc. Am. Acad. vii. 361. 

 Adeiiostijles Nurduxmia, Cniy, 1. c. viii. G31, & Bot. Calif, i. 301, following Benth. & Hook. 

 — Open pine woods, California from Mendocino Co. northward {Dulander, Kellogg, Greene) 

 to Oregon and Wasliington Terr., Suksdorf, IJou-ell. 



182. LtJINA, Benth. (Anagram of Itnila. which this genus approaches.) 

 — Hook. Ic. PI. t. 1139; Benth. & Hook. (Jen. ii. A;\H. — Single species. 



L. hypoleuoa, Bknth. 1. c. Herbaceous .and simple-stemmed from a stout woody root- 

 stock, while with .appressed tomentum : stems hardly a foot high, equably leafv up to the 

 corymbiform cyme of siweral small heads: leaves ovate or oval, alternate, sessile, entire, 

 inch or less long, nervose-veiny and reticulated, the ujijjcr face soon glabrate and green. 



