194 CHLORTS MELVILLIANA. 



Corymhi 7-10-flori, densi, folio florali sessili ssepe subteiisi, 

 cseternm ebracteati. Cahjx glaber, sepalis sequalibus, ovatis, 

 obtusis, modice concavis, trinerviis, extra medium piirpu- 

 rascentibus, insertione pariim insequalibus. Petala alba, 

 caljce sesquilongiora, ungues breves, lamince obovatae (vel 

 ex ovali obovatse), obtusse, integerrimae, plange, obsolete 

 iininervise, vix manifeste venosae. GlandvlcB receptaculi 

 quatuor, per paria approximatee, latera filamentorum bre- 

 viormii stipaiites, parvge. Stamina tetradynama. Filamenta 

 subiilata, glabra, edentula, duo lateralia paulo breviora basi 

 aversa (acie nee superficie plana ovarium spectanti). AnthercB 

 uniformes, ovato-subrotundse, incumbentes, infra medium 

 affixae, loculis parallelo-contiguis, longitudinaliter dehiscen- 

 tibus. FolleM flavum, sphaericum, simplex quantum 

 observare potui per lentem centies augentem. Ovarium 

 sessile, glabrum, oblongo-ovatum, uniloculare, placentis 

 duabus parietalibus polyspermis. Sfylus brevissimus vix 

 manifestus. Stigma capitatum, indivisura v. simibilobum, 

 stylo vix amplius. Siliqua (siliculosae) racemosae, erectae, 

 lineari-lanceolatae, ancipites, glaberrimae, vix trilineares, 

 stigmate obtuso indiviso subsessili apiculatae. Valvm 

 carinatae, carina manifesta, venis immersis, cortice demum 

 ad margines solubili, in disco arctius adherenti ; replum 

 cortice pariter separabili. Bissepimentum, praeter basin 

 apicemque ubi saepius completum, plerumque margo peran- 

 gustus ad utrumque latus cujus processus membranaceus 

 angustior e quo funiculi umbilicales brevissimi obtusi crassi 

 papillaeformes orti. Semiiia immarginata, fusca, laevia. 

 Cotyledones incumbentes, lineari-oblongae, plano-convexi- 

 usculae, basi attenuata brevi in crure radiculari sita. 



Obs. This species is named in honour of Mr. Edwards, 

 Surgeon of the Hecla, from whose extensive and well-pre- 

 served herbarium I have derived great assistance in drawing 

 up the present list, and in which only perfect speciuieus 

 with ripe sihquae of Eutrema Edwardsii were found. 



