376 COMPOSITE. Petasites. 



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

 whitish or purplish, in spring. — Gsertn. Fruct. ii. 406, 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. Rootstock 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, Cass. ; so named from the fragrant flowers of the original species. 



P. sagittata, Gray. 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. Fl. i 307, and apparently a part of N. frigida, Hook. — Wet ground, Hudson's Bay 

 to Fort Franklin, west to the Rocky 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. — " Syll. 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 species. T. corymbosa, It. Br. in Parry Voy. 

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

 & N. corymbosa, 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) round-reniform in outline, 

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

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

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

 Hook. 1. c. ; Torr. & Gray, 1. c. — Wet woodlands, Newfoundland and Labrador, Canada, 

 New England, and Wisconsin to Brit. Columbia and California. (E. Asia.) 



181. CACALlOPSIS, Gray. (KaKaXia, ancient Greek name of Colts- 

 foot ? and oi/z-i-, 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 perennial, a foot or two high, floccose-woolly, at length 

 glabrate : leaves considerably resembling those of Petasites palmata, alternate, long-petioled, 

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

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

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

 pure yellow : flowers honey-scented. ■ — Cacalia Nardosmia, Gray, Proc. Am. Acad. vii. 361. 

 Adenostyles Nardosmia, Gray, 1. c. viii. 631, & Bot Calif, i. 301, following Benth. & Hook. 

 — Open pine woods, California from Mendocino Co. northward (Bolander, Kellogg, Greene) 

 to Oregon and Washington Terr., Suhsdorf, Howell. 



182. LtJlNA, Benth. (Anagram of Inula, which this genus approaches.) 

 — Hook. Ic. PI. t. 1139; Benth. & Hook. Gen. ii. 438. — Single species. 



L. hypoletica, Benth. 1. c. Herbaceous and simple-stemmed from a stout woody root- 

 stock, white with appressed tomentum : stems hardly a foot high, equably leafy up to the 

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

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



