■S' 



102 



PLANT.i: WRIGIITIAN.E 



VI 



Lially monocepl 



Tlie whole plant 



and more arachnoid than in C. undulatum 



ed with a white wool, which 

 id the unner surface is found 



be smooth when the woolly covering is rubbed ofF. The involucre, also loosely 



wooUy, is about 



and a half in diameter, not bracteate ; the scales with a 

 and appressed base ; and all but the innermost with a 



chartaceous or coriaceous 

 foliaceous-acuminate and spine-tipped entire appendage, which is widely sp 



compared with Cirsiun 



or the exterior scales reflexed. This should be coi 

 canumj DC. (but it is wholly unlike C. lanceolatum) and t 

 The involucre most resembles that of C. heterolepis, Benth 

 belicve. 



Mexi 



C. cernuam, ia^. 

 which belbngs, I 



ramis mono- 



No. 467 of Coultefs Mexican coUection), but it is smaller and less 

 foliaceous. 



C. Grahami (sp. nov.) : caule 3-5-pedah apice parce ramoso; 

 cephalis ; foliis subtus cano-lanuginosis supra leviter arachnoideis mox nudis minute 

 viscoso-hirtellis lanceolatis sinuatis vel subpinnatiiidis spinuloso-ciliatis lobis denti- 

 busve breviter spinosis, caulinis semiamplexicaulibus haud decurrentibus ; involucro 



- 3 parvis instructo, squamis coriaceis appressis gla- 



sub^loboso basi bracteolis 2 



bratis lanccolatis spinula brcvissima apiculatis ; corollis intense purpureis. — Low 

 grounds, in vallcys betwccn the Sonoita and the San Pedro, Sonora; Sept. (1296.) 

 Eadical leaves over a foot in lensrth and three inches wade ; those of the elonfrated 



and a half in length. 



ground. 



flovvering branches one to three inches long ; the uppermost linear. Head an inch 



Scales of the involucre barely spinulose-mucronate or cus- 

 pidate, Flowers very bright and deep purple. The neaiiy muticous involucre, the 

 deep purple flowers, and the leaves bare and green above, principally distinguish 

 this from some forms of C. undulatum, which moreover grows in high and dry 



It is named in honor of Col. J. D. Graham, under whose auspices the 

 collcction was made. 



Perezia runcinata, Lagasca ; Grai/, Pl Wright. p. 125. Stony hills of tlie 

 Pecos and San Felipe Creek, Texas; May, July. (1297.) 



P. ^AXA, Gray^ Pl. Fendl. p. 111, §* Pl. Wright. l. c. Along branches of the San 



Pedro, Sonora ; Sept. Stony hills, hear El Paso ; March. (14:18.) — "Plantvery 

 swcet-scented in drying." 



P. Wrightii, Grag^ Pl. IVright. p. 127. Prairies along the Rio Frio, Western 

 Texas; May. (1298.) 



Trixis angustifolia, DC. Prodr. 1. p. 69; GraT/, Pl. Wright. p. 128; var, 

 foliis lato-lanceolatis saepe dcnticulatis. — Ravines, at Santa Cruz, Sonora ; Sept. 

 Mountains near El Paso ; May. (1299.) — The leaves are very much wider than 

 in Gregg s specimens ; those of "Wrighfs former collcction are intermediate in their 

 form. 



Leria nutans, DC. Prodr. 7. p. 42. Comanche Creek, Western Texas ; May. 



Calais linearifolia, DC. ; 2'orr. ^ Gray, Fl. 2.p. 471. Shore of Lake Gusman, 

 Chihuahua. Also sandy hills, Camp Fillmore, and on the adjacent Organ Moun- 



New Mexico ; April 



fo 



(1419.) 



The 



specim 



d well Avith the Cali 



except tliat the 



of the invokicre are scarcelv so much 



and the ach 



beaked 



difFer 



which do not appear to 







! 





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