50 _ Linnean Society. 
PROCEEDINGS OF LEARNED SOCIETIES. 
LINNAAN SOCIETY. 
June 8, 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Read a paper entitled ‘‘ Descriptions of some unpublished species 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. 
This paper contains characters and descriptions of 142 species of 
Phenogamous plants presumed to be new to science. Several are 
described as forming new genera, which are characterized as fol- 
lows :— 
Ord. UMBELLIFERZ. 
Trib. AMMINEZ. 
Gen. Acronema, Fale. MSS. 
Calycis margo obsoletus. Petala lanceolata, in apiculum filiformem ree- 
tum acuminata. Stylopodium bifidum, dilatatum, Styli divergertes, 
apice deflexi. Fructus subovatus, a latere compressus, subdidymus ; 
mericarpia basi gibba, apice angustata, jugis 5 eequalibus tenuiter fili- 
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. Petrosciadium. 
Calycis limbus obsoletus. Petala ovata, integra; lacinulaé inflexd. Fruc- 
tus a latere compressus, oblongus, stylopodio pulvinato stylisque diver- 
gentibus reflexis coronatus ; mericarpia 5-juga, jugis filiformibus eequa- 
libus, valleculis 1-vittatis, commissura bivittaté; carpophorum biparti- 
tum, adnatum. Semen planum, oblongum, basi angustatum. 
P. cespitosum. 
Trib. ANGELICER. 
Gen. Oreocome. 
Calycis limbus 5-fidus, laciniis subulatis. Petala ovata, apiculo inflexo 
plus minus emarginato. Fructus a dorso compressus, stylopodio sty- 
lisque reflexis coronatus ; mericarpia 5-juga, jugis alatis marginantibus 
amplis, valleculis univittatis, marginalibus quandoque bivittatis, com- ° 
missurad 2—4-vittata. Semen anticé planum, vel subconcavum, dorso 
sub valleculis suleatum. Carpophorum \iberum, bipartitum. 
1. O. elata, foliis 4—5-pinnatisectis; caulinis superioribus 3-pinnatisectis : 
pinnis primariis ad vaginz apicem sessilibus: Jaciniis inciso-dentatis 
acutis, involucelli foliolis linearibus, valleculis dorsalibus 1— margina- 
libus 1—2-vittatis ; commissura 4-vittata, semine anticé plano. 
2. O. filicifolia, 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-vittaté, semine anticé subconvexo. 
To this genus are referable Selinum Candollii, DeC. Prodr. iv. p.165, 
Peucedanum Wallichianum, DeC, Prodr. iv. p, 181, and Pleurosper-. 
mum cicutarium of Royle’s Illustrations. 
