BO Linnaan Society, 



PROCEEDINGS OF LEARNED SOCIETIES. 



LINN^AN SOCIETY. 



June 3, 1845.— Edward Forster, Esq., V.P., in the Chair. 



Read a paper entitled " Descriptions of some unpublished species 

 of Plants from North- Western India." By M. Pakenham Edgeworth, 

 Esq., F.L.S., Bengal Civil Service. 



Thi§ paper contains characters and descriptions of 142 species of 

 Phsenogamous plants presumed to be new to science. Several are 

 described as forming new genera, which are characterized as fol- 

 lows : — 



Ord. UMBELLIFERiE. 



Trib. AMMiNEiE. 



Gen. Acronema, Falc. MSS. 



Calycis margo obsoletus. Petala lanceolata, in apiculum filiformem rec- 

 tum acuminata. Stylopodium bifidum, dilatatum. Styli divergentes, 

 apice deflexi. Fructus subovatus, a latere compressus, subdidymus ; 

 me7'icarpia basi gibba, apice angustata, jugis 5 aequalibus tenuiter fiU- 

 formibus, omnino evittata ; carpophorum liberum, integrum, apice bi- 

 dentatum. Semen teres convexum, antice planiusculum. 



A. tenerum. — Sison?tener, Wall. List \ Helosciadium ? tenerum, DeC. 

 Prodr, iv. p. 106. 



Gen. Peirosciadium. 



Calycis limbus obsoletus. Petala ovata, Integra ; lacinulji inflexii. Fruc- 

 tus a latere compressus, oblongus, stylopodio pulyinato stylisque diver- 

 gentibus reflexis coronatus; mericarpia 5-juga, jugis filiformibus aequa- 

 libus, valleculis 1-vittatis, commissma bivittata; carpophorum biparti- 

 tum, adnatum. Semen planum, oblongum, basi angustatum. 



P. c(Bspitosum. 



Trib. Angelice^e. 



Gen. Oreocome. 



Calycis limbus 5-fidus, laciniis subulatis. Petala ovata, apiculo inflexo 

 plus minus emarginato. Fructus a dorso compressus, stylopodio sty- 

 Usque reflexis coronatus ; mericarpia 5-juga, jugis alatis marginantibus 

 amplis, valleculis univittatis, margin alibus quandoque bivittatis, com- 

 missura 2 — 4-vittat^. Semen antice planum, vel subconcavum, dorso 

 sub valleculis sulcatum. Carpophorum liberum, bipartitum. 



1. 0. elata, foliis 4 — 5-pinnatisectis; caulinis superioribus 3-pinnatisectis : 

 pinnis primariis ad vaginas apicem sessilibus : laciniis inciso-dentatis 

 acutis, involucelli foliolis linearibus, valleculis dorsalibus 1 — margina- 

 libus 1 — 2-vittatis ; commissura 4-vittata, semine antice piano. 



2. O.Jilicifolia, foliis inferioribus 4 — 5-pinnatisectis ; superioribus 3-pin- 

 natisectis : pinnis omnibus petiolatis : segmentis pinnatifidis : lobis an- 

 gustis lanceolatis acutis mucronatis, involucelli foliolis biformibus lan- 

 ceolatis pinnatifidisque, valleculis dorsalibus 1 — marginalibus 1 — 2- 

 vittatis ; commissura 4-vittata, semine antice subconvexo. 



To this genus are referable Selinum Candollii, DeC. Prodr. iv. p. 1 65, 

 Peucedanum Wallichianum, DeC, Prodr. iv. p. 181, and Pleurosper- 

 mum cicutarium of Royle's Illustrations. 



