HO BOTANY. 



glabrate : pinnae 3 to 6 pairs, the lowest remote from the stem ; leaflets 8 

 to 25 pairs, oblong-linear, acutish, a line or two long, strongly veined: 

 peduncles solitary, a half to an inch long : corolla purplish, about 3 lines 

 long, at least twice longer than the calyx : stamens about 30 : pods coria- 

 ceous, stipitate, somewhat hairy, 2 or 3 inches long by 3 lines broad, with 

 very thick margins, 4-6-seeded. — Western Texas to Arizona and Mexico ; 

 Canon del Diablo, Arizona, Loew. 



Calliandra eeiophtlla, Benth. (1. c. iii, 105). (C. Chamcedrys, Engelm. 

 I c .) — Shrubby, a foot high or less, appressed-pubescent and more or less 

 villous : pinna? 2 to 7 pairs, the lower not distant from the stem, about half 

 an inch long; leaflets about 10 pairs, oblong, obtuse or acutish, 1 to 2£ 

 lines long, villous beneath or nearly glabrous : peduncles slender, solitary 

 or in pairs, a half to an inch long : flowers purplish, more or less hairy : 

 calyx short: corolla 2£ lines long: stamens very numerous: pods as in the 

 last, 2 to 4 inches long, pubescent, 6-10-seeded. — From Western Texas to 

 Arizona and Mexico ; at Camp Grant and Cottonwood, Ariz., Rothrock 



(352, 455). 



ROSACEA. 



Pkttnus demissa, Walp. — My specimens were obtained doubtless from 

 near where Fendler secured his. In some of its forms too close to P. 

 serotina. No. 400 of the Colorado collection I have doubtfully assigned to 

 this species. — Nevada and Utah. 



Nkillia* pauciflora, Benth. & Hook. (Spircea opulifolia, y. pauciflora, 

 T. & G-. Fl. 1, p. 414.) — Differing from Neillia opulifolia (Benth. & Hook.) in 

 smaller leaves, fewer flowers (5-10) to the corymb, and having usually less 

 than four hairy carpels, and one to two mature ovaries. Still, however, it 

 is quite variable. 402, from Mount Graham, has large leaves, and 53, from 

 Santa Fd, has as high as 1 4 flowers to the corymb. 



Spiraea millefolium, Torr. (Pacific R. R. Report, 4, 83, t. 5). — 

 "Woolly-tomentose; leaves oblong-lanceolate in outline, pinnate, with many 

 pairs of small leaflets, pinnae pinnatisect, or parted, oblong-linear, densely 

 crowded with the very minute oblong divisions ; flowers racemose-panicu- 



* Neillia, Don, differs from Spirasa in inflated carpels, harder testa to the seeds, and copious 

 albnmen. 



