272 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



Family GROSSULARIACEAE. 



RIBES? FLORISSANTI, new species. 



Myrica diversifolia Lesquereux, Rept. U. S. Geol. 8urv. Terr., vol. 8 (Cret. and 

 Tert. Fl.), 1883, p. 148, pi. 25, fig. 13. [Not other figures.] 



Leaf of small size, about 4 cm. long and 2,5 cm. broad, broadly del- 

 toid in general outline, deeply 3-lobed, lateral lobes obovate, obtuse, 

 decurront; central lobe ovate, all lobes few toothed; nervation thin, 

 pinuate. 



This species, so far as now known, is represented only by the leaf 

 referred by Lesquereux to his Myrica diversifolia.^ This specimen 

 should be in the United States National Museum collections, but 

 it can not now be located, in fact it is not recorded in the catalogue 

 as ever having been present. 



Although this leaf was included by Lesquereux in his Myrica 

 diversifolia, it does not seem to me that it can possibly be referred to 

 either of the two forms into which that species is now separated (i. e. 

 Sorbus diversifolia and S. nwpta). Its deeply three-lobed outline 

 with the basal portion decurrent are features that can not be made to 

 fit into either of its companion leaves as shown in Lesquereux s plate. 



In some respects this leaf suggests species of Rhus in the Floris- 

 sant flora. Thus, it has the same size and much the appearance of 

 Rhus vexans Lesquereux,^ but the latter is distinctly trifoliolate 

 instead of three-lobed. It is also quite like some of the leaves re- 

 ferred to Rhus hilliae Lesquereux,^ but this is an odd-piimate leaf. 



On the whole it appears to agree best with the genus Rihes, being, 

 for example, not greatly unlike R. aureum Pursh. 



Family ROSACEAE. 



ROSA SCUDDERI, new species. 



Plate 22, fig. 4. 



Leaves of small size, with seven leaflets, the terminal (odd) leaflet 

 narrowly elliptical, equally narrowed to both base and apex, short 

 petioled, length 20 mm., width 6 mm.; upper pair of leaflets oval, 

 sessile, 12 mm. and 15 mm. long and 4 and 6 mm. wide respectively; 

 middle pair of leaflets much smaller, about 8 mm. long and 3 or 4 mm. 

 wide; lowest pair of leaflets minute, 5 or 6 mm. long, about 2 mm. 

 wide; aU leaflets entire at base, then coarsely toothed; nervation 

 obscure with apparently about 5 or 6 pairs of secondaries; stipules 

 obscure, apparently minute and narrow. 



Type.— C&t. No. 34,765, U.S.N.M. 



1 Rept. U. S. Geol. Surv. Terr., vol. 8, 1883, pi. 25, fig. 13. 



2 Idem, p. 195, pi. 41, flg. 20. 



8 Idem, p. 194, pi. 41, figs. 12-15. 



