OF ARTS AND SCIENCES. 363 



Csetera species, omnes Tndiese, sunt B. Courtallensis, Arn., et B. scopa- 

 ria, poIypogo)wides, et adscendens, Munro. 

 Hong Kong. 



3. Aristida (ChuEtaria) Chinensis (sp. nov.) : panicula 10- 

 12-pollicari patula exserta, radiis solitariis geminisve usque ad basin 

 bipartitis 1 - 6-uncialibus nutantibus ad axillas barbatis supra bis di- 

 chotomis quandoque axillulis barbatis ; ligula ciliata. — Glumse inae- 

 quales, inferiori acuminata 5 lin. superiori sub 3 lin. longa. Flosculus 

 apice non torto nee articulate. 



Whampoa and Cum-sing-moon. 



4. Apocopis Wrightii (sp. nov.) : spica bifida ; spiculsE inferi- 

 oris sessilis gluma externa 8-nervi truncata obtusissima basi flava apice 

 rubro-marginata fimbriata, nervis apice obsoletis ; flosculis hermaphro- 

 ditis omnibus nisi intima aristatis, arista 9-liueali ; paleis fl. inf. masc. 

 glumas superantibus. — Aff. A. Royleance. 



Cum-sing-moon. 



5. IsCHiEMUM LEERSIOIDES (sp. nov.) : hirsuta ; culmo gracili; foliis 

 anguste linearibus ; spica simplici unilaterali curvata ; gluma spiculae 

 sessilis inferiori oblonga pectinata {nee alatd) apice obtusiuscula ; spi- 

 culis pedicellatis tabescentibus. — Aff. I. pectinato. 



Whampoa, Lemma Island, and Hong-Kong. 



6. IsCH^MUM OPHiouROiDES (sp. nov.) : spica simplici semicylin- 

 drica ; gluma spiculae sessilis quadrato-oblonga scariosa alata retusa 

 margine exteriore ciliis perpaucis abscouditis pectinato ; spiculis pedi- 

 cellatis tabescentibus ; foliis planis brevibus obtusis basi contractis et 

 ciliatis. 



Whampoa. 



Professor Gray read a paper, entitled, 



A Revision of the Genus Forestiera. By Asa Gray. 



FORESTIERA, Poir., Genus Oleacearum. 



Adelia, Michx., non P. Browne. Borya, Willd., non Labill. Bigelowia, Smith, 



non aliorum. Piptolepis, Benth. 



* Folia membranacea, nunquam porulosa vel punctata. 



1. F. ACUMINATA (Poir.) : glabra ; foliis ovato-lanceolatis ovatisve 

 utrinque acuminatis longiuscule petiolatis serrulatis vel subintegerri- 



