235 
Lmnatan Society. 
tuber oso, fibrillis numerosis ; caule simpUci, erecto, subjlcxuoso, angii- 
lato,fere apkyllo ; flore solitario, terminali, 2 — \-bracteato ; bracteolis 
brevibus vel sub jiore vel in caule medio, ereciir, ; perianthii sub- 
hyalino, lacmiis interioribus roseis, exlerioribus Jlavis, corona luteci 
margine auruntiacd ; fmctu liyalino. 
1. O. Macaiiknsis, caule iiudo, bracteolis 2 v. 3 florem solitarium tcrmi- 
nalem sufFulcientibus. 
Hab. ad Macalie, in Prov. Rio de Janeiro. 
Planta 2 — 3-pollicaris. 
2, O. Iguassuensis, caule subnudo medio bracteolis 3 v. 1 in verticillum 
dispositis instructo. 
Hab. ad Iguassii, in Prov. Rio de Janeiro. 
Planta vix pollicaris. 
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 sj^ecies 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 crianthium Stamina o. 3-loculare. 
Placenta centralis. 
Capsula longitudinaliter dehisccns 1. Burmannia, L. 
transverse fenestrata 2. Gonyanthes, Blum. 
II. APTERiEAi:. Perianthium simplex. Stamina^. Ovarium 1-loculare. 
Placentae 3, parietales. 
irregulariter 3-valvis 3. hictyostega, Miers. 
lateraliter hians 4. Cymbocarpa,'b/l\cx^. 
aplce 3-valvis. Stamina appen- ) ^ , . xt 
diculata 
irregulariter dehiscens. Petala 1 
* > G. Gym7iosiphon,\i\\\m. 
HI. T HisMiE/E. Perianthium simplex. Stamina 6. Ovarium 1-locularc. 
Placentce 3, parietales. Pericarpium circumscissum. 
Corolla tubus agqualis. Stamina mona- ) rr-, • • -cr- 
delpha ) Timm, a, Guff. 
gibbus. 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 Leguminosce, 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. 
Corolla papilionacea petala longe stipitata ; vexillum ovato-lanceo- 
latum, reflexum, alis oblongo-ellipticis multo brevius ; carina com- 
