282 PRocEEorNOS of the national museum. 



I liave not seen the types of the two figures of CelaMrinites elegans, 

 which are said to be in Princeton University, but it is suspected that 

 figure 10* will be found to belong to Cercis parvifiora. The nervation 

 certainly suggests this reference, the only obstacle in the way being 

 the apparently crenulate margin, which may not have been com- 

 pletely exposed. 



Family STAPHYLEACEAE. 



STAPHYLEA ACUMINATA Lesquereux. 



Sfaphylea acuminata Lesquereux, Ann. Rept. U. S. Geol. and Geogr. Surv., 

 Terr., 1873 [1874], p. 415; Rept. U. S. Geol. Surv. Ten-., vol. 7 (Tert. Fl.), 

 1878, p. 267, pi. 48, figs. 4, 5; vol. 8 (Cret. uud Tert. Fl.). 1888, p. 18.S, pi. 

 36, figs. 1-4. 



Specimens of this species are contahied in all three of the collections 

 under examination. 



Family ACERACEAE. 



ACER FLORISSANTI Kirchner. 



Acer florissanti Kirchner, Trans. St. Louis Acad. Sci., vol. 8. 1898, p. 181, 

 pi. 11, fig. 1. 



Tirpe—Cht. No. 33,673, U.S.N.M. 



This splended species, which is clearly of the ty^e of the eastern 

 silver maple (Acer saccharinum), has been well described and figured 

 by Kii-clmer. Although the leaves of Acer appear to be rather rare at 

 Florissant, Cockerell^ has reported finding this species at two stations, 

 and the United States National Museum has a very fine specimen 

 [Cat. No. 50,346, U.S.N.M.] from the coHection of R. D. Lacoo, which 

 was identified by Lesquereux as Acer trilobatum cuspidatnni . 



ACER KIRCHNERIANUM, new species. 



Leaf of small size, of the type of Acer iio?issanti but only one- 

 fourth the size, three-lobed, the ceJitral lobe large, strongly toothed 

 above; lateral lobes oblong-acute, with several strong teeth; nerva- 

 tion with three ribs arising at the base of the blade, the middle one 

 with about 4 or 5 pairs of secondaries which pass to the sharp margi- 

 nal teeth, lateral ribs passmg to the tips of the lateral lobes, each with 

 5 or 6 pairs of arching secondary branches which enter the teeth. 



Type.—C&t. No. 33,761, U.S.N.M. 



This little leaf, which is nearly perfect, has the blade a little over 

 2.5 cm. long, while the petiole which is complete is slightly over 1 cm. 

 long. Its outline and nervation are well shown in the figure. 



It is possible that this is only a very small leaf of Acer Jioiissanii 

 Kirchner, but as it is only one-fourth its size and moreover is three- 



iCret. and Tert. Fl., pi. 31. 



» Bull. Amer. Mus. Nat. Hist., vol. 24, 1908, p. 101. 



