1894. | NEW YORK ACADEMY OF SCIENCES. 31 
PLATANACE. 
Platanus Wrightti S. Wats. Proc. Am. Acad. 10: 349 (1875). 
ROSACE, 
Agrimonia striata Michx. Fl. Bor. Am. 1: 278 (1803). Mrs. Hoyt, Ft. 
Apache. 
Cercocarpus breviflorus A. Gray, Pl. Wright. 2 ; 54 (1853) ? 
CERCOCARPUS PAUCIDENTATUS (S. Wats.) Britton. 
C. parvifolius paucidentatus 8. Wats. Proc. Am. Acad. 17: 353 (1882). 
Straggling shrub, branching from the base, sometimes fifteen feet 
high ; bark dark gray, somewhat glaucous and often reddish when 
young ; leaves clustered at the ends of short branches, which are 
sealy to the base with the scars of fallen leaves and are villous- 
pubescent when young ; petiole short; blade thick, 15 to 20 mm. 
long and from 3 to 4 as wide, obovate, narrowly spatulate or 
elliptic, narrowed from about the middle to the acute or wedge- 
shaped base, usually somewhat narrowed towards the obtuse and 
mucronate or truncate apex, entire or with a few inconspicuous 
teeth towards the apex; margin inrolled, upper surface green, 
impressed above the veins, soft-pubescent, lower surface covered 
with a dense whitish tomentum ; principal veins prominent on the 
under surface, forming a very small angle with the midrib, usually 
deflected upward as they approach the margin, villous with spread- 
ing silky hairs, lesser veins obscure; flowers much as in C. parvi- 
folius ; calyx-tube 5 to 8 mm..long in fruit; tail of achene 3 to 5 
em. long. 
This plant is certainly a distinct species. In C. parvifolius the bark is 
usually of a lighter gray; the leaves thinner, less rigid, broadly 
obovate wedge-shaped, conspicuously serrate from about the 
middle upward, rounded or truneate at the broad apex, the upper 
surface less pubescent and less furroughed by the impression of 
the veins; the veins beneath less villous, much less prominent, 
forming a mucl greater angle with the midrib and not deflected 
upward as they approach the margin; the fruiting calyx-tube is 
about twice as long and proportionally wider, and the tail to the 
acheneistwiceaslongormore. ‘‘ The heartis as hard as ebony—is 
' worked by a file, as it seems too hard for the plane. I have seen 
none more than fifteen feet high and six inches in diameter, 
usually less. Grows in clumps like thealder.’’—Wilcox. -Appears 
to flower twice in the same season, in March—May, and again in 
August. Dr. Wilcox, Ft. Huachuca; Dr, Ebert, Tanner’s Canon. 
The common species in New Mexico and Arizona. 
Cowania Mexicana D. Don, Trans. Linn. Soc. 14: 575 (1825). Mrs. 
Hoyt, Ft. Apache ; Dr. Wilcox, Ft. Huachuca. 
Fallugia paradoxa (Don) Torr. Emory’s Rep. 140 (1848). 
Geum ciliatum Pursh, Fl. Am. Sept. 352 (1814). Mrs. Hoyt, Ft. Apache. 
LUETKEA C4SFPITOSA ELATIOR (8. Wats.) Britton. 
Spirea cespitosa elatior 8S. Wats. Bot. King’s Rep. 81 (1871). Dr. 
Ebert, Tanner’s Cajon. : 
Potentilla glandulosa Lindl. Bot. Reg. 19: ¢ 1583 (1833)? Mrs. Hoyt, 
Ft. Apache. 
Potentilla Thurbert A. Gray, Mem. Am. Acad, (II.) 5: 318 (1855). Dr. 
Wilcox, Ft. Huachuca; Mrs. Hoyt, Ft, Apache. 
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