TERTIARY PLANTS FROM VENEZUELA BERRY 351 



LEGUMINOSAE INCERTAE SEDIS 



LEGUMINOUS POD 



In the collection from locality 2 there is a specimen of a large 

 pod obviously belonging to the leguminous alliance but not complete 

 enough for identification. It is about 7 cm long, the proximal part 

 missing, and about 3.5 cm in maximum width. The distal end is 

 broadly rounded. The pod is compressed, shows no distinct outline 

 of the contained seeds, and has a thickened margin and a faintly 

 reticulate surface. 



Occurrence. — Stream bank below the crossing of the Zapayari-El 

 Plan Road, about li/^ kilometers south of Rio Grande, District of 

 Bolivar, State of Zulia. 



Order Geraniales 



Family TRIGONIACEAE 



Genus TRIGONIA Aublet 



TRIGONIA VARIANS Engelhardt 



Figure 30, a, b 



TrUjoniavarians Enget^hardt, Abh. Senek. Naturf. Ges. vol. 19, p. 35, pi. 7, figs. 

 4-6; pi. 9, fig. 9, 1895.— ?Be(rry, Proc. U. S. Nat. Mus., vol. 55, p. 290, 1919; 

 vol. 59, p. 575, pi. 107, fig. 8, 1921. 



This species was described by Engelhardt from several different- 

 f-ized specimens collected from tuffs near Santa Ana in the Magda- 

 iena Valley, Colombia. Rather poor material from the lower Mio- 

 cene of northern Peru was tentatively identified as this species by 

 me in 1919. 



Leaves of variable size, ovate to obovate in general outline. Apex 

 and base usually about equally pointed; sometimes apex is acuminate. 

 Margins entire, slightly undulate. Texture subcoriaceous. Length 

 to 13 cm. Maximum width, at or slightly above middle, 3 to 5.25 

 em. A maximum-sized specimen from Betijoque is shown in figure 

 30. Petiole stout, its length unknown. Mid vein stout, prominent on 

 under surface of leaf, usually curved. Secondaries stout, prominent 

 on under surface; 9 to 12 opposite to alternate pairs diverge from 

 mid vein at fairly regular intervals and at angles of 55° or less, 

 ascending subparallelly, becoming camptodrome in marginal region. 

 Tertiaries thin but well marked on under side of leaf, consisting of 

 rather closely spaced percurrent nervilles, which may be all that can 

 be made out if the preservation is not good; these are connected by 

 anastomosis, so that their course is usually not straight, the whole 

 forming a relatively open, isodiametric areolation. 



The genus Trigonia., not otherwise known in the fossil state, com- 

 prises about 30 existing species of reclined or climbing shrubs, which 



