Linnaan Society, 235 



tuheroso, fibrillis numerosis ; caule stmplici, erecto, suhflexuoso, angu- 

 lato,fere aphyllo ; flore solitario, terminal}, 2 — ^-hracteato ; bracteolis 

 brevibiis vel sub Jlore vel in caule medio, ercctis ; perianthii tubo sub- 

 hynlino^ laciniis interioribiis roseis, exterioribus jlavis, corona luted 

 margine atiraniiacd ; fructu hyalino. 



1. O. Macaiii:nsis, caule nudo, bracteolis 2 v. 3 florcni solitarium ttrnii- 

 nalem suffulcientibus. 



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

 Planta 2 — 3-pollicaris. 



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

 dispositis instructo. 



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

 Planta vix poUicaris. 



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

 (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 : — 



BuRMANNIACEiE. 



I. BuRMANNiEiE. P evianthium in^\.QY\i\Xi. Stamina 3. Oyari«w» 3-loculare. 

 Placenta centralis. 



Capsula longitudinaliter dehiscens 1. Burmannia, L. 



transverse fenestrata 2. GonyantheSf'QXwm. 



II* Apterie^.. Perianthium simplex. Stamina 3> Ovarium 1-loculare. 

 PlacentcB 3, parietales. 



Copstt/a irregulariter 3-valvis 3. Dictyostega, Miers. 



lateraliter liians 4. Cymbocarpa, Miers. 



' aplce 3-valvis. Stamina appen- ) ^ J < • -ki .l 



diculata _...) 5. ^/^<m«, Nutt. 



irregulariter dehiscens. Petala \ ^ ^ - , n^ 



11 ° > 6. ijymnosiphon,)5\\vcn, 



III. TnisMiEiE. Perianthium simplex. Stamina 6. Ovarium 1-loculare. 

 Placenta 3, parietales. Pericarpium circumscissum. 



Corollce tubus sequalis. Stamina mona- ^ h rr^t • • r^ -iv 



delpha ) ^' Thismta, Gxi&. 



— — . gibbu?. Stamina libera ... 8. Ophiomeris, Miers. 



The paper concludes with some observations on the affinities of 

 these plants, and of Triuris, Miers, and Peltophyllum, 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 Leguminosa, from 

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



Jansonia. 



Char. Gen. Calyx ebracteatus, bilabiatus ; labio superiore fere ad basin 



bifido ; inferiore 4-pl6 longiore, 3-partito ; segmentis omnibus acutis. 



CorollcB papilionacece petala long^ stipitata ; vexillum ovato-lanceo- 



latum, reflexum, alis oblongo-ellipticis multo brevius; carina; com- 



