GREENMAN. — SPERMATOPHYTES FROM MEXICO, ETC. 267 



Sexecio albonervius, Greenrn. Shrub, 2 to 3 m. high : stem in. 

 the younger parts white-tomentose, later becoming glabrous and covered 

 with a grayish bark : leaves petiolate, broadly ovate, cordate, 3 to 12 cm. 

 long, nearly or quite as broad, palmately nerved, 5-9-augulately lobed, 

 at first tomentulose on both surfaces, later more or less glabrate and dis- 

 colorous, persistently white-tomentulose on the nerves especially of the 

 upper surface, short mucrouate-denticulate on the margins ; lobes short- 

 mucronate-acute : inflorescence a terminal many-headed corymbose pan- 

 icle : heads 10 to 12 mm. high, radiate; involucre calyculate with short 

 triangular-lanceolate acute bracteoles ; bracts of the involucre usually 8, 

 lance-linear to oblong, obtuse, about 6 mm. long, thickened along the 

 median line, glabrous or slightly tomentulose-puberulent, the inner with 

 broad scarious margins : ray-flowers commonly 5 ; pappus surpassing the 

 tube; rays 4-nerved : disk-flowers 8 to 10: achenes glabrous. — Monogr. 

 Senecio, 26 (1901) & Engl. Bot. Jahrb. xxxii. 22 (1902).— Mexico. 

 State of Mexico : Tamascaltepec, Schiede, coll. of 1831 (hb. Gr., and hb. 

 Mus. Bot. Berol.) ; Mt. Ixtaccihuatl, altitude 2440-3350 m., 1903, C. A. 

 Purpus, no. 201 (hb. Gr., hb. T. S. Brandegee). State of Michoacan : 

 north slope of Mt. Tancilaro, altitude 2285-3200 m., 24 February, 1903, 

 E. W. Nelson, no. 6904 (hb. U. S. Nat. Mus., and hb. Gr.). State of 

 Morelos : Sierra de Tres Marias, altitude 3050 m., 15 April, 1904, C. G. 

 Pringle, no. 8903 (hb. Gr.). State of Vera Cruz : Mineral del Monte, 

 Ehrenberg, no. 324 (hb. Gr., and hb. Mus. Bot. Berol.). 



Sexecio bracteatus, Klatt. Leopoldina, xxiv. 125 (1888), re- 

 print p. 7. S. leucanthus, Greenm. Monogr. Senecio, 25 (1901) & Engl. 

 Bot. Jahrb. xxxii (1902). Cacalia amplexicaulis, Schz. Bip., ace. to 

 Klatt, 1. c, reprint p. 8. I am indebted to Professor Eug. Warming of 

 Copenhagen for a critical comparison of Mr. Pringle's no. 5713 with 

 Liebmaun's no. 192, the original of S. bracteatus, Klatt (Cacalia amplexi- 

 caulis, Schz. Bip.). There can be no doubt of the identity of the two 

 plants, although the Liebmann specimen is said to be rather incomplete. 

 — Mexico. Between St. Andres and St. Miguel, Liebmann, no. 192 

 (hb. Copenhagen, fragment and drawing ex herb. Klatt in hb. Gr.). 

 State of Oaxaca: Sierra de San Felipe, altitude 3050 m., 19 September 

 1894, Pringle, no. 5713 (hb. Gr.). 



Cirsium pinetorum, n. sp. Stem 1 to 2 m. high with a few widely 

 spreading branches above, striate, tawny arachnoid-tomentose: leaves 

 pinnatifid, lanceolate-oblong in general outline, acuminate, the lower 

 3 to 4 dm. long, 1 to 1.5 dm. broad, the upper gradually smaller and 

 sessile but not decurrent on the stem, spinose-margined, hirsute-hispid 



