NO. 2229. FOSSIL PLANTS FROM BOLIVIA— BERRY. 125 



Genus MYRICOPHYLLUM Saporta. 



MYRICOPHYLLUM. species, Engelhardt. 



MyricopTiyllum, species, Engelhardt, Sitz. Naturw. Gesell. Isisin Dresden, 1894, 

 Abh. 1, p. 6, pi. 1, fig. 24. 



Description. — Incomplete material of a linear leaf, with a stout 

 midrib, prominently toothed margin, and stout secondaries diverging 

 from the midrib at wide angles, every second or third one ending in 

 a marginal tooth; the balance camptodrome. 



The only knowTi specimen is the small fragment figured by Engel- 

 hardt. It is clearly distinct from the other members of the Potosi 

 flora, and apparently represents a striking Comptonia-like Myrica. 



Order P0LYG0NALE3. 



Family POLYGONACEAE. 



Genus RUPRECHTIA C. A. Meyer. 



RUPRECHTIA BRAUNII Engelhardt. 



Plate 15, fig. 8. 

 Ruprechtia ftraumi Engelhardt, Sitz. Naturw. Gesell. Isisin Dresden, 1894, Abh. 

 1, p. 6, pi. 1, fig. 19. 



Description. — Leaves linear lanceolate in outline. Apex gradually 

 narrowed, acuminate. Base acuminate, inequilateral. Margins en- 

 tire, more or loss undulate. Texture coriaceous. Length, about 6.25 

 cm. Maximum width, at or below the middle, about 9 mm. Petiole 

 not preserved. Midrib thin but prominent on the lower surface of 

 the leaf, inclined to be flexuous. Secondaries numerous, thin but 

 prominent, ascending, somewhat irregularly spaced; they diverge 

 from the midrib at angles of about 40° and are camptodrome. 



The present species may be compared with the leaves of the existing 

 Triplaris salicifolia from southern Brazil which C. A. Meyer refers to 

 Ruprechtia and with Rupreclitia laurifnlia Martins of eastern Brazil. 

 Ruprechtia is a genus, not otherwise known in the fossil state, with 

 about 20 existing species of shrubs and trees of tropical and sub- 

 tropical regions of South America. 



Plesiotypes.— Cat. No. 35125, U.S.N.M. 



Order RANALES. 



Family RANUNCULACEAE. 



Genus CARPOLITHUS Allioni. 



CARPOLITHUS VIORNAFORMIS, new species. 



Plate 15, fig. 9. 



Description. — A fruit referable of the Ranunculaceae and appar- 

 ently representing a one-seeded ovate acheno with a long slender 

 curved naked style. Achene about 1 mm. long, rounded at the base 

 and pointed distad. Style about 7 mm. long. 



