GREENMAN. — CENTRAL AMERICAN SPERMATOPIIYTES. 51 



11 SoptcLubur, 188.">, C. G. PringJe, no. G2o (lib. Gr.), distributed as 

 " Artemisia Ludoviciuna, Nutt., var. ? " ; near Lake Santa Maria, 



7 September, 1899, K W. Nelson, no. G387 (lib. Gr., and hb. U. S. Nat. 

 Mus.). This s[)ecies is amjily distinct from A. Ludoviciana both in the; 

 character of the foliage and the inflorescence. 



Cacalia pkltata, HHK., var. Coulteri, n. var. Lower leaves 

 peltate, 7-lO-lobed with rounded or subcircular sinuses : inflorescence 



8 to 15 cm. ill diameter, deiisrly pubescent with jointed villous hairs: 

 heads 12-1 G-fiowered. — IMkxico. State of Vera Cruz : Real del IMonte, 

 Th. Coidter, no. 420 (hb. Gr.) ; Mt. Orizaba, August, 1891, Henry E. 

 Seaton, without number (hb. Gr,). State of Mexico : Nevado de 

 Toluca, 15 October, 1903, Jiose Sf Painter, no. 7939 (hb. Gr., and hb. 

 U. S. Nat. Mus.). 



CiHSiUM ociiuocENTRUM, Gray, var. durangense, n. var. Leaves 

 pinuatisect ; divisions lance-linear, spine-tipped, at first arachnoid-tomen- 

 tulose above but soon glabrate revealing the dark green surface and 

 yellowish midvein, densely and permanently white-tomentose beneath. — 

 Mexico. State of Duratigo : about the City of Durango, 1 August, 

 1898, E. W. Nelson, no. 4G33 (hb. Gr., and hb. U. S. Nat. Mus.). 



Onoseris silvatica, n. sp. An herbaceous perennial about 1 ra. 

 high : leaves alternate, chiefly basal, runciuate-pinnatifid, short-acuminate, 

 acute, unequally sinuate-dentate, arachnoid-tomentulose above, densely 

 white-tomentose beneath ; terminal segment large, triangular-sagittate, 

 1 to 3 dm. long, nearly or quite as broad, palmately nerved, cordate ; 

 lateral segments smaller, divaricate or somewhat reflexed, often reduced 

 to a more or less continuous wing on the rhachis or petiole : inflorescence 

 a naked loose paniculate cyme : peduncle or scape striate-angled, floccose- 

 tomentose : heads 2 to 2.5 cm. high, 40-45-flowered : involucre sub- 

 campanulate, 2 cm. high, tomentulose ; bracts of the involucre 4-seriate, 

 the outer shorter : outer flowers of the head bilabiate, producing well- 

 developed dark-red or purplish rays : inner or disk-flowers deeply and 

 subequally 5-toothed : achenes appressed - sericeous - pubescent. — O. 

 panicxdata, Klatt, Bull. Soc. Bot. Belg. xxxi. pt. 1, 214, not [Moc. 

 & Sessc] DC. — Costa Rica. " Forets des collines de Nicoya," 

 January, 1900, Ad. Tondnz, no. 13,597 (hb. Gr.) ; " foret de I'Alto 

 del Rodeo," altitude 1100 m., 28 December, 1889, Pittier, no. 1022 

 (hb. Gr.) ; "tallies du Rodeo del Pacaca," altitude 900 m., 12 

 January, 1891, Pittier, no. 3312 (hb. Gr.). From 0. hotypus, 

 Bentli. & Hook. f. (0. fKiniculata, [Moc. «fe Sessc] DC) this species 

 is readily distinguished by having larger more numerously flowered 



