ba an, амалда жа, ре, 
[Vor. 5 
92 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
ling or exceeding the blade, at first white-tomentose on both 
surfaces, more or less glabrate especially on the upper sur- 
face, margins often revolute; upper stem-leaves few, remote, 
linear or linear-lanceolate, bracteiform; inflorescence a termi- 
nal few-headed (1-5) cyme; heads 10 to 14 mm. high, sessile 
or pedunculate, radiate; involucre campanulate, sparingly 
calyculate, tomentulose; bracts of the involucre 13 to 21, 
linear-lanceolate, 7 to 8 mm. long; ray-flowers about 10, rays 
yellow; disk-flowers 45 to 60; achenes glabrous. 
Distribution: Mexico. 
Specimens examined: 
Chihuahua: vicinity of Madera, alt. about 2250 m., 27 May- 
3 June, 1908, Dr. Ed. Palmer 277 (U. S. Nat. Herb., Field Mus. 
Herb., and Mo. Bot. Gard. Herb.). 
State of Mexico: Nevada de Toluca, alt. 3960 m., 2 Sept., 
1892, Pringle 5332 (Gray Herb. and Mo. Bot. Gard. Herb.) ; 
meadows, Mt. Ixtaccihuatl, alt. 3350-3655 m., March-July, 
1903, Purpus 267 (Mo. Bot. Gard. Herb.). 
Federal District: grassy slopes, Serrania de Ajusco, alt. 
2985 m., 16 April, 1898, Pringle 6797 (Gray Herb., Phil. Acad. 
Nat. Sci. Herb., and Mo. Bot. Gard. Herb.). 
Hidalgo: open spaces, Sierra de Pachuca, alt. 3050 m., 23 
Aug., 1902, Pringle 9960 (Gray Herb. and Mo. Bot. Gard. 
Herb.). 
Southern Mexico: near Huajalote Rancho, March, 1837, 
Ehrenberg 847 (Berlin Herb. and Gray Herb.) ; Jorullo, Hum- 
boldt & Bonpland (Berlin Herb., fragment and tracing in 
Gray Herb.), түре; Mt. Orizaba, Schiede 359 (Berlin Herb., 
tracing іп Gray Herb.) ; peak of Orizaba, alt. 3500 m., June- 
Oct., 1840, Galeotti 2184 (Gray Herb.); Province of Vera 
Cruz, alt. 3050-3655 m., April, 1856, Sartorius (Gray Herb.) ; 
peak of Orizaba, Liebmann 141 (Copenhagen Herb., fragment 
and tracing in Gray Herb.) ; near Moran and Regla, Humboldt 
£ Bonpland (Paris Herb., tracing in Gray Herb.), type of 5. 
cheiranthifolius; Mt. Orizaba, alt. 4265 m., 7 Aug., 1891, Sea- 
ton 239 (Gray Herb.) ; slope of Mt. Orizaba, alt. 4420 m., 25 
Feb., 1892, J. G. Smith (Mo. Bot. Gard. Herb.). 
