330 Linnean Society. [May 4, 



May 4. 



E. Forster, Esq., V.P., in the Chair. 



Henry Cadogan Rothery, Esq., M.A., was elected a Fellow. 



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-])artito ; segmentis omnibus acutis. 

 Corollce papilionacece petala longe stipitata ; vexillum ovato-lanceo- 

 latum, reflexum, alls oblongo-ellipticis multo brevius ; car'mcB com- 

 pressjB (alis tertia parte longioris) petala oblonga, basi auriculata, 

 dorso coiinata. Stamina 10, libera, vel ima basi cohaerentia, insequi- 

 longa, persistentia. Ovarimn villosissimum, substipitatum, stipitulo 

 basi vaginula cincto, pauci- (4 — 6) ovulatum, suturis non inflexis. 

 Stylus filiformis, elongatus, apice incurvus, glaber. Stigma parvum. 



Legumen — Suffrutex Novae Hollandiae Austro-Occidentalis, 



Brachysemati, R. Br. proximus ; ramis erectis vel adscendentibus ; foliis 

 oppositis, oblongo-ovafis, emarginatis, mucro7iatis, utrinque reticulatis, 

 margine revolutis, subtmdulatis, minute denticulatis ; stipulis lanceolato- 

 subulatis, demum deciduis ; floribus sessilibus, congestis in capitula cer- 

 nua, A flora, bracteis 4 ovatis decussatis, coriaceis,fuscis, exfus sericeis 

 suffulta, ramulos breves axillares terminantia. 

 Jansonia Formosa. 



Hab. in Novae Hollandiae Ora Austro-Occidentali, ad " Scott's River " 

 (1842), Gilbert (v. s.). 



Obs. Specimen habitu debiliore, et foliis ramulisque pubescentibus pauld 

 diversum a D. Jac. Drutnmoud ad " Swan River " lectum (v. s. in Herb. 

 D. Lemann). 



The nearest affinity of Jansonia is with Brachysema, R. Br., with 

 which genus Mr. Kippist states that it agrees in its unguiculate 

 petals, in the form and unusual length of the keel, in the extreme 

 shortness of the standard, in its elongated filiform style, and in its 

 shortly stalked villous germen, surrounded at the base by a minute 

 fleshy ring ; but it is abundantly distinguished by its capitate inflo- 

 rescence, by the remarkable inequality of its calycine segments, by 

 the much greater length of the claws of its petals, and by the pau- 

 city of its ovules, which do not appear to exceed six in number. 

 Mr. Kippist also compares it with Leptosema, Benth., which is clearly 

 distinguished by its bibracteolate calyx, composed of two nearly equal 



