Plants Collected in Paraguay. 249 



£chinoclorils grandiflorus (C. and S.), Mich, in D.C. Monog. Plian., 

 iii, 57. 



Caballero (508); Pilcomayo River (853). December-January. 



A bog plant with scapes 7-9 dm. high, striate, rough with glan- 

 dular tubercles. Leaves ovate or oval, cordate, obtuse at the apex, 

 prominently 9- or lO-nerved, glabrous, largest about 15 cm. long 

 and 13 broad, on petioles similar to the scapes, 20-30 cm. long. 

 Flowers white, in 8-10 remote whorls, 5-7 in the whorl ; the 3 ex- 

 terior bracts separate, many and strongly nerved, ending in a long 

 subulate summit, as long as or longer than the pedicels. Pedicels 

 10-15 cm. long. Kootstock creeping; roots fibrous. A very vari- 

 able plant as to size, smoothness, and number of verticils. 



No. 508 was collected in dry and rather dusty ground near the 

 railway track at Caballero, and 853 in pools between Paragua and 

 Luque. 



Echinodorus subalatus (Mart.), Griseb., Cat. PI. Cub., 218. Ex 

 descr. 



Pilcomayo River (1039). May. 



Growing in water in the great laguna on the Pilcomayo River. 

 Scapes 6 dm. to 1 m. or more high, striate and with 3 sharp angles, 

 which become subulate among the inflorescence. Inflorescence sim- 

 ple or branching below. Flowers 4-7 in a verticil ; the 3 exterior 

 bracts slightly coalescent below, lanceolate, ending in a long subu- 

 late point, longer than the pedicels. Pedicels 5-10 cm. long. Sepals 

 with a broad membranous margin. Petals white, obtuse at the 

 apex, 2-3 cm. in diameter when expanded. Stamens about 20, at 

 length contorted. Leaves elliptical, glabrous, attenuated at either 

 end, 3-7 nerved, 10-25 cm. long and 4-8 cm. broad, marked by 

 pellucid lineolse, which are often obscure or obsolete. Petioles 

 angled like the scapes, and nearly as long, the striae when young 

 sometimes minutely glandular pubescent. Rootstock thick and 

 hard, with many long fibrous roots, the rootlets often bearing 

 many small white tubers. 



L.iiniiocharis nymphoides (Willd.), Mich., 1. c, 91. 



Trinidad (266). December-February. 



An aquatic with very beautiful light yellow flowers, but so deli- 

 cate are the petals that I never succeeded in preserving any in the 

 dried specimens. Flowers solitary, on a long scape rising from a 



