56 Plants Collected in Paraguay. 



Sida cordifolia^ L., Sp. PL, 684. 



Asuncion (114). November-March. 



Sida dictyocarpa, Gris., Mart. Fl. Bras., xii, pt. 3, 314. 



Pilcomayo River (956). March. Named by Edmund Baker. 



Sida dictyocarpa, var. Cordobensis, E. Baker, ined. 



Pilcomayo River (953). February. Named by Edmund Baker. 



Sida pandiculata, L., Amoen. Aead., v, 401. 

 Asuncion (194). November. 



Sida rliombifolia, L., Sp. PL, 684. 



Asuncion (51); Pilcomayo River (1055). November-June. 



Sida spinosa, L., Sp. PL, 683. 



Pilcomayo River (953 a). February. 



Sida urens, L., Araosn. Acad., v, 402. 



Pilcomayo River (960). March. 



The species of Sida here enumerated are small shrubs or suffruti- 

 cose plants, one only, perhaps (;S. urens), being herbaceous. As a 

 rule, they have yellow or whitish-yellow flowers, but S. ciliaris has 

 brownish-purple, and S. paniculaia lurid-purple petals. They differ 

 in the most extraordinary manner in regard to the number of styles, 

 the number of carpels, and other fruit characters. S. angustifolia. 

 has 5 styles and 5 carpels, each containing a single seed which is 

 downy and notched at the apex, the ventral summit projecting into 

 one, sometimes two points. S. ciliaris has 8 styles and T carpels, 

 the seeds somewhat irregular in shape, and the backs of the carpels 

 covered with spine-like protuberances. S. carpinifolia has 7 smooth 

 carpels which run up into a combined beak at the summit, each con- 

 taining a single seed, and two flat faces meeting in a sharp ventral 

 edge that terminates in a sort of curved horn at the apex. S. cor- 

 difolia has 13 one-seeded carpels, grooved on the curved back, which, 

 with the faces, is rugose-reticulate-veiny, and beaked at the summit 

 by two long, parallel, hispid awns that are very close together. 

 S. dictyocarpa has 5.7 and 10 styles and 8 carpels, while its so-called 

 var. Cordobensis has only 5 styles and 5 carpels. S. paniculata 

 greatly differs in general appearance from its congeners, having 

 numerous small lurid-purple flowers on long, naked, jointed pedicels in 



