48 TRANSACTIONS AND PKOCEEDINGS OF THE [Sess. lviii. 



Hab. — Uruguay; Montevideo, Gibert, 126! 351! Eio 

 Pilcomayo, Kerr, 66 ! 



Pelioli |-1 poll, longi. Pedicelli i-J poll, longi. 

 Involucri bractea} i-§ poll, longie, 24-iV P^H- ^ata.'. 

 Corolla i poll, longa. 



This plant much resembles P. hastata, but may be at 

 once distinguished by the pedicels being shorter than, or 

 about equalling, the petioles, and by the involucral bracts 

 distinctly exceeding the calyx. The articulation of the 

 pedicels, too, appears to be much closer to the flower, and 

 the leaves are less hastate, and their toothing more rounded. 

 In P. hastata the pedicels are much longer than the 

 petioles, and the involucral bracts are spathulate-ovate 

 and shorter than the calyx. Although the corolla in all 

 the specimens of P. consobrina that I have seen is small, 

 and scarcely exceeds the calyx, yet the flowers are certainly 

 not cleistogamous, though possibly a cleistogamous form 

 may exist, as in the case of P. hastata (N. E. Brown). 



In shady spots by river side near Fortin Page. Fl. 1st 

 Nov. 



Hibiscus cisplatinus, St. Hil. 



Hab. — Marshy spots — Parana Delta, Piio Paranti, Eio 

 Paraguay, liio Pilcomayo. Fl. (Pilcomayo) 11th Dec. 



FUGOSIA SULPHUREA, JuSS. 



Hab. — Open campo near Fortin Page. Fl. 15th Oct. 

 Corolla yellow, with crimson centre. 



Melochia pykamidata, L. var. Hieronymi, Schum. 

 Hab. — Piio Pilcomayo. 



Melochia tomentosa, L. 

 Hab. — Piio Pilcomayo. 



Buettneria filipes. Mart. 

 Hab. — Eio Paraguay. 



Stigmaphyllon calcaratum, X. E. Br. (n. sp.). — Foliis 

 oppositis, breviter petiolatis, oblongis vel lanceolato- 

 oblongis obtusis, mucronatis, basi breviter mucronato- 

 sagittatis, marginibus subintegris absque glandulis supra 

 subtusque glabris, vel subtus sparse pubescentibus petiolis 

 dense adpresse pubescentibus apice biglandulosis : pedun- 



