>o. 2229. FOSSIL PLANTS FROM BOLIVIA— BERRY. 155 



Primaries three, stout, diverging from the extreme base at angles of 

 about 40°, the central nearly straight and the laterals slightly 

 curving outward, each terminating at the summit of the obtuse 

 lobes. Tertiaries obsolete by immersion, from the character of the 

 margin, presumably camptodrome as in the recent species. 



This species is not represented in the present collection and the 

 accompanying illustrations are reproduced from Britton's report. 

 The latter author is doubtful of the reference of these leaves to 

 Passifiora, but I see nothing to criticise in this determination. The 

 marginal character and the peculiar aspect of the leaves, with their 

 broadly "roimded base, obtuse lobes, and extended oblong central 

 lobe, and with the basal primaries stamp them clearly as referable, to 

 the Passifloriaceae, a family abundantl}' represented in the existing 

 flora of vSouth Alnerica. A number of fossil species of Passijioria are 

 known, but none of these is especially close to the present species. 

 The existing species number upward of 300 climbing slu'ubs or rank 

 annuals, mostly American and tropical in their distribution, but found 

 also in Madagascar (one species), Asia, and Australia. The present 

 species appears to be referable to the section Granadilla De Candalle, 

 which has over 80 existmg species, more than half of wliich are Brazil- 

 ian. I do not know whether or not Passiflora occurs at the present 

 time in Bolivia to the west of the front range of the Andes, but it 

 is not uncommon in eastern Bolivia, and according to Herzog ' a 

 species occurs in the Andean outliers of Santa Cruz and Cochabamba 

 up to elevations of 2,600 meters. 



Order MYRTALES. 



Family MYRTACEAE. 



Genus MYRTEOLA Berg. 



MYRTEOLA POTOSIANA, new species. 



Plate 18, fig. 6. 



Descnftion. — Leaves small, ovate in outline, petiolate, with entire 

 margins and coriaceous texture. Apex acute. Base about equally 

 acute. Length, about 13 mm. Maximum width, midway between 

 the apex and the base, about 5 mm. Petiole stout, about 2.25 mm. 

 in length. Midrib stout. Secondaries thin, about 1 mm. apart, 

 diverging from the midrib at angles of between 40° and 50°, generally 

 straightly ascending and subparallel, occasionally slightly curved, 

 their tips joined close to the margin by a slightly arched aerodrome 

 vein formmg a marginal hem along each margin. Tertiaries indis- 

 tinct, occasional fine percurrent tertiaries and acutely diverging 

 branches from the secondaries can be discerned. 



* Herzog, Th., Pflanzenformatlonen Ost BoUvias, 1910. 



