Linnaan Society. 286 



tuheroso, fibrillu numerosis ; caule simpUci, erecto, suhjlexuoso, angu- 

 lato,fere apkyllo ; flore soUtario, terminaU, 2 — \-bracteato ; bracteolis 

 brevibns vel sub fiore vel in caule medio, erectis ; perianthii tubo sub- 

 hyalino, laciniis interioribus ro.ieis, exterioribiis Jiavis, corona luted 

 margine auraniiacd ; fiuctu hyaline. 



I. O. MACAHr.NSis, caule luido, bracteolis 2 v. 3 florem solitarium tcrmi- 



nalem sufFulcientibus. 

 Ifab. ad Macahe, in Prov, Rio de Janeiro. 

 Planta 2 — 3-pollicaris. 



2. O. Iguassuensis, caule subnudo medio bracteolis 3 v. 4 in verticillum 



dispositis instructo. 

 Hab. ad Iguassu, in Prov. Rio de Janeiro. 

 Planta vix pollicaris. 



Mr. Miers compares this Brazilian genus with Thismia, GriflF. 

 (characterized at p. 195, vol, xv. of Annals), of which he has seen 

 specimens in the herbarium of Sir William Hooker, as well as a speci- 

 men probably of the same species collected by Capt. Champion in 

 the island of Ceylon. He regards Thismia and Ophiomeris as consti- 

 tuting a distinct section of the family Burmanniacece, which he pro- 

 poses to subdivide as follows : — 



BURMANNIACE^. 



I. BuRMANNiE*. Perianthium tripteruni. Stamina 3. Ovarium 3-loculare. 



Placenta centralis. 



Capsw/a longitudinaliter dehiscens 1. Burmannia, 1j. 



transverse fenestrata 2. Go7ujanthes,W^um. 



II. ApTERiEiE. Perianthium simplex. Stamina 3, Ovarium 1-loculare, 



PlacenicB 3, parietales. 



CopsM/a ivregulariter 3-valvis 3. Dictyoslega, Miers. 



lateraliter liiaus 4. Cy mbocarpa, Mieis. 



apice 3-valvis. Stamina appen- 1 k j ^ • xt ^^ 



diculata !^^^....} 5. ^^<en«, Nutt. 



irreeulariter dehiscens. Petala ) ^ y-, . , r>i 



,] ° I "• ^y^^ios^phon,a\\im. 



III. Thismie^. Perianthium s\m\Ae\. Stamina G. Ot^arjMW 1-loculare. 



PlacentcE 3, parietales. Pericarpium circumscissum. 



Corolla; tubus sequalis. Stamina mona- ) >, vi • • /^ 'a- 

 , , , ^ > 7. Ihismia, GriW. 



delpha j ' 



gibbu?. Stamina libera ... 8. Ophiotneris, Miers. 



The paper concludes with some observations on the affinities of 

 these plants, and of Triuris, Miers, and Peltophyllwn, Gardn. ; and 

 was illustrated with detailed drawings of Ophiomeris Macahensis, and 

 of the flower of Thismia Brunonis, Griff., for comparison. 



May 4. — E. Forster, Esq., V.P., in the Chair. 



Read a paper " On Jansonia, a new genus of Leguminosce, from 

 estern Australia." By Richard Kippist, Libr. L.S. 



Jansonia. 



Char. Gen. Calyx ebracteatus, bilabiatus ; labio superlorc ferS ad basin 



bifido; inferiore 4-pl<i longiore, 3-j)artito ; segmentis omnibus acutis. 



Corollee papilionaccce petala longe stipitata; vexillum ovato-lanceo- 



lalum, rctlcxum, alis oblongo-eliipticis multo brevius; carinee com- 



