48 Plants Collected in Paraguay. 



lie under the thick mass of infertile stamens, and so far as I could 

 judge entirely out of the reach of the pollen by any action of the 

 organs themselves. I found, however, that the pollen was very 

 plentiful, and that a pin thrust through the anthers obliquely would 

 carry its grains to the stigmas. There seemed in the older flowers 

 to be evidence that this operation is performed by insects, and I 

 came to the conclusion that, as in the case of Evpomatia, described 

 by Maout and Decaisne, the plant must always depend for fructifi- 

 cation upon insect agency. The fact that fruit is seldom found upon 

 the shrub confirms the idea. I often obtained flowers both of this 

 and Rollinia, but not one in ten of the flowers formed fruit. In 

 both cases the fruit is a large, irregularly shaped berry containing 

 many seeds imbedded in a pulpy aril, and said by the people to be 

 edible. They are very inferior to the Chirimoya or custard apple, 

 to which they are closely allied. 



MENISPERMACE^. 



Cissampelos Pareira, L., Sp. PL, 1473. 



Between Trinidad and Lympio (729); Pilcomayo River (815). 

 November-June. 



The ''Pareira hrava''"' of the druggists, the roots of which are in 

 high repute, medicinally, in urinary diseases. A dioecious vine 

 twining around shrubs and trees. It has many broad cordate-ovate 

 leaves, 5-10 cm. long, and nearly as wide at the base. Stems fus- 

 cous hairy. Roots exceedingly large and rather woody. 



Cissainpelos Pareira^ L., var. Caapeba (L.), Eichl., Mart. Fl. Bras., 

 xiii, pt. 1, 190. 



Asuncion (829). November. 



The variety with leaves only 1 cm. long and 2 cm. broad, bearing, 

 when in fruit, many small red berries. This looks different enough 

 to be almost regarded as a distinct species. 



Castalia Oibertii, Morong, n. sp. 



Leaves oval in outline, entire, rounded at the apex, the lobes moderately 

 spreading and obtuse, the under surface covered with short branching fuscous 

 lines interspersed here and there with elevated raphioidal striae, the upper 

 surface having these striae mingled with minute tubercles, especially near the 

 sinus. Flowers white, turning yellowish in drying, inodorous, 6-7 cm. in 

 diameter. Sepals oblong-ovate, 3-3^ cm. long, somewhat acute, with numer- 



