OF ARTS AND SCIENCES. 119 



fours, clasping at base : heads few, terminal and axillary, shortly pe- 

 dunculate, oblong, 10 lines long; involucre of 14 or 15 bracts, oblong- 

 linear, sharp pungent, 2 inches or more long, with 3 or 4 pairs of spines 

 or the inner ones sometimes entire ; bractlets blue, pungent, a little 

 longer than the flowers. — In pine woods, Mt. Orizaba, 12,000 ft., 

 August (no. 197). Near E. protcejlorum, but with more scattered 

 stem leaves, narrower radical leaves, fewer bracts, and bearing several 

 heads. Galeotti's no. 2763, which was found on this mountain at 

 exactly this altitude and referred to E. protcejlorum, is in all probabil- 

 ity the above plant. 



Akkacacia nudicaulis, Coulter & Rose, n. sp. Acaulescent, 

 glabrous, with slender peduncle, 3-12 inches high : leaves 4—7, pinnate ; 

 segments linear, entire or the lower ones 3-7-toothed or pinnatifid, 

 the ultimate segment appendiculate : umbel somewhat unequal, 6-12- 

 rayed ; rays 1-2 inches long ; pedicels 2-3 lines long : flowers white : 

 fruit ovate, flattened laterally, IJ lines long : stylopodium conical, 

 becoming inflexed ; styles slender, thickened at tip. — Pine woods, 

 Mt. Orizaba, 12,000 ft, August (no. 199). 



Gnaphalium Popocatepecianum, Seh. Bip. Sandy plains, Mt. 

 Orizaba, 14,000 ft., August (no. 242). This plant is the same as 

 Schaffner's no. 50, Coulter's 451*, and one collected by Galeotti. 

 Also very near G. Liebmanni^ Sch. Bip. (ex char.), 



losTEPHANE HETEROPHYLLA, Benth. Specimens of this plant 

 collected in moist woods near Esperanza, 8,000 ft., August (no. 366), 

 show the stem to be foliaceous to the summit and the rays dark 

 red. 



ViGUiERA PEDDNCULATA. Stem erect, about 3 feet high, smooth- 

 ish, branched only at the summit : leaves opposite, distant, petiolate, 

 coriaceous, undulate-serrulate, 3-nerved from the base, somewhat 

 scabrous above, minutely pubescent on the nerves below ; lower leaves 

 deltoid, acute, about 3 inches long, li-2 inches broad ; the upper ovate, 

 acute, cuneate at the base, 1^-2^ inches in length : peduncles 1-3 at 

 the ends of the branches, 5-11 inches long: heads solitary, l^-lf 

 inches in diameter: involucre 4 lines high ; the bracts lance-linear, 

 apiculate, pubescent: rays 12-15, 6-8 lines long, oblong-elliptic, 

 minutely emarginate : bracts of the convex or subconical receptacle 

 entire, cuspidate, about equalling the disk corollas : achenes oblong, 

 finely pubescent, \h lines in length : pappus awns chaffy-dilated at 

 the base, neai'ly as long as the achene ; the intermediate paleae lacini- 

 ate. — Wooded hills near Esperanza, 8,000 ft., August (no. 368). 

 A species well characterized by its long-pedunculate heads. 



