NO. 2229. FOSSIL PLANTS FROM BOLIVIA— BERRY. 135 



This species, of somewhat doubtful validity, is not represented in 

 the present collection. It was compared by Engelhardt with the exist- 

 ing Brazihan species Calliandra leptopoda Bentham. 



Genus ENTEROLOBIUM Marlius. 



ENTEROLOBIUM GRANDIFOLIUM Engelhardt. 



Plate 15, fig. 30. 



Enlerolohium grandlfolium Engelhardt, Sitz. Natiirw. Gesell. Isis in Dresden, 

 1894, Abli. 1, p. 12, pi. 1, fig, 60. 



Description. — Leaflets sessile, falcate-lanceolate in outline, with a 

 shortly acuminate inequilateral tip and a bluntly pointed very inequi- 

 lateral base. Margins entire. Texture subcoriaceous. Length about 

 1.6 cm. Maximum width, midway between the apex and the base, 

 about 4 mm., one-fourth on one side of the midrib and three-fourths 

 on the opposite side. Midrib mediumly stout, curved. Secondaries 

 mostly obsolete by immersion, a few subparallel with the lower 

 lateral margms and camptodrome are made out with difficulty. 



The present species is not common in the collections. It is very 

 similar to the existing Enterolohium timbouva Martins, a Brazihan 

 species rangmg northward to the West Indies, and recorded by Her- 

 zog 1 from the hiU country of Velasco, m eastern BoUvia. The genus 

 is a small one closely related to Inga and Pithecolohium, with about 

 half a dozen known existing species of trees with even pinnate small 

 leaves, confined to tropical America and found from the West Indies 

 and Central America to Brazil. Except for the two species recorded 

 from Potosi it is unknown in the fossil state. - 



Enterolohium grandifolium is readily distmguished from the associ- 

 ated small, falcate, slightly petiolulate, Enterolohium parvifolium. It 

 is somewhat like the broader forms referred by Engelhardt to Acacia 

 uninervifolia as well as similar to Mimosites engelhardti Berry and 

 MacTiaerium eriocarpoides Engelhardt. It is, however, somewhat 

 larger than these, falcate and much more inequilateral. 



ENTEROLOBroM PARVIFOLIUM Engelhardt. 



Plate 15, fig. 31. 



Enterolohium ■parvifolium Engelhardt, Sitz. Naturw. Gesell. Isis in Dresden, 

 1894, Abh. 1, p. 12, pi. 1, fig. 61. 



Description. — Leaflets slightly petiolulate, linear falcate, inequi- 

 lateral. Apex bluntly pointed to slightly cuspidate, shghtly inequi- 

 lateral. Base inequilateraUy pointed. Margins entire. Texture 

 coriaceous. Length ranging from 1 to 1.5 cm. Maximum width, in. 

 the middle part of the leaflet, about 2.5 mm. Midrib stout, curved. 

 Secondaries obsolete, a few camptodrome ones diverging at wide angles 

 occasionally seen. 



^Herzog, Th., Pflanzenformationen Ost Bolivias, Englers Bot. Jahrb., vol. 44, 1910. 



