NO. 2229. FOSSIL PLANTS FROM BOLIVIA— BERRY. 161 



Order RUBIALES. 



Family RUBIACEAE. 



Genus RUBIACITES Weber. 



RUBIACITES NUMMULARIOIDES, new species. 



Plate 18, fig. 15. 



Description. ^Le&res small, ovate, or broadly elliptical in outline, 

 relatively long petiolate, widest in the middle, with a somewhat nar- 

 rowed rounded tip and a broadly cuneate base. Margins entire. 

 Texture coriaceous. Length, about 4 mm. Maximum width, about 

 3 mm. Petiole stout, curved, about 1.5 mm. in length. Midrib 

 stout. Secondaries thin, about three subparallel, openly campto- 

 drome pairs. Tertiaries obsolete. 



These small leaves are somewhat suggestive of some species of 

 Celastraceae, but upon the whole their closest affinities appear to be 

 with several existing genera of Rubiaceae, and they are consequently 

 referred to the form genus Ruhiacite's proposed by Weber for Rubia- 

 ceous leaves of uncertain generic affinity. Ignoring the exclusively 

 herbaceous genera comparisons may be made with various existing 

 species of Anisomcris Presl, Palicourea Aublet, and Coprosma Forster. 

 None of these genera are recorded as fossils. Anisomeris comprises 

 about 25 species of shrubs ranging from Venezuela to Paraguay, but 

 chiefly Brazilian. Coprosma comprises about 40 species of shrubs 

 and small trees mostly oriental and extending from Java to New 

 Zealand and in Oceanica to Hawaii but found also on Juan Fernandez 

 and in Chile. Palicourea comprises over 100 species of shrubs con- 

 fined to tropical America and ranging from Mexico and the Antilles to 

 southern Brazil. 



Holotype.— Cat . No. 35117, U.S.N.M. 



Order CAMPANULALES. 



Family COMPOSITAE. 



Genus CYPSELITES Heer. 

 CYPSELITES POTOSIANUS, new species. 



Plate 18, fig. 16. 



Description. — A linear, cylindrical achene with a corona of pappus 

 distad. Surface with about 10 longitudinal ribs. Length, about 3 

 mm. Diameter, 1.5 mm. This undoubtedly represents the fruit of 

 some species of Compositae of uncertain generic relationship. It is 

 represented in the collections by two good specimens and fragments 

 of others and is referred to the form-genus Cypselites to which Heer has 

 referred a variety of similar remains from the Miocene of Switzerland. 



Holotype. —C&t. No. 35118, U.S.N.M. 

 3343— 19— Proc.N. M. vol.54 12 



