cclxviii 
appendix. 
zantibus inconspicuis, glaberrima : petiolis folio 4-5-ies longiorlbus, linearibus membranaceis^ 
albicantibus, adversus lucem trinerviis ; caulina radicalibus conformia, inferiora brevi pe- 
tiolata, superiora subsessilia. Corymbi 7-10-flori, densi, folio florali sessili saepe subtensi, cse- 
terum ebracteati. Calyx glaber, sepalis jEqualibus, ovatis, obtusis, modice concavis, trinerviis, 
extra medium purpurascentibus, insertione parum inasqualibus. Petala alba, calyce sesquilon- 
giora, ungues breves, lamince obovatae, (vel ex ovali obovat^) obtusae, integerrim®, plana?, 
obsolete uninervise, vix manifeste venosae. Glandules receptaculi quatuor, per paria approxi- 
matae, latera filamentorum breviorum stipantes, parvje. Stamina tetradynama. Filamenta 
subulata, glabra, edentula, duo lateralia paulo breviora basi aversa (acie nec superficie plana 
ovarium spectanti.) Anther (R unifornies, ovato-subrotundae, incumbentes, infra medium affixae, 
loculis parallelo-contiguis, longitudinaliter dehiscentibus. Pollen flavum, sphaericum, simplex 
quantum observare potui per lentem centies augentem. Ovarium sessile, glabrum oblongo- 
ovatum, uniloculare, placentis duabus parietalibus polyspermis. Stylus brevissimis vix mani- 
festus. Stigma capitatum, indivisum v. semibilobum, stylo vix amplius. Siliqux (siliculosa?) 
racemoste, erecta?, lineari-lanceolatae, ancipites, giaberrimae, vix trUineares, stigmate obtuso 
indiviso subsessili apiculatae. Valvce carinatae, carina manifesta, venis immersis, cortice demum 
ad margines solubili, in disco arctius adherenti ; replum cortice pariter separabdi. Dissepi- 
mentum, praeter basin apicemque ubi saepius completum, plerumque margo perangustus ad 
utrumque latus cujus processus membranaceus angustior e quo funiculi umbdicales brevissimi 
obtusi crassi papdlaeformes orti. Semina immarginata, fusca, lasvia. Cotyledones incum- 
bentes, lineari-oblongae, plano-convexiusculae, basi attenuata brevi in crure radiculari sita. 
Ous. This species is named in honour of Mr. Edwards, Surgeon of the Hecla, from 
whose extensive and well-preserved hei’barium I have derived great assistance in drawing 
up the present list, and in which only perfect specimens with ripe sdiquae of Eutrema 
Edwardsii were found. 
EXPLICATIO TABULdS— A. 
Eutrema Edwardsii. — 1. Planta florida, et 17. fructifera ; utraque magnitudine natu- 
rali. Sequentes magnitudine auct^ ; 2. flos integer ; 3. petalum ; 4. flos petalis orbatus ; 
5, sepalum (foliolum calycis) ; 6. stamina et pistillum integumentis floralibus avulsis; 7. 
stamen longius ; 8. stamen brevius ; 9- pollen ad augmentum 200 ; 10. pistillum receptaculo 
insidens a facie visum ; 11. idem duplo auctius ; 12, ejusdem portio transverse secta ; 13. 
idem valvis avulsis; 14. pistillum a latere visum; 15. idem valvis avulsis; 16. placentie 
parietalis portio cum ovulis ; 18. siliqua matura dehiscens a facie visa; 19. siliqua matura 
clausa a latere visa ; 20. eadem valvis orbata; 21. eadem duplo auctius; 22. semen; 23. 
idem transverse sectum ; 24. idem longitudinaliter sectum ; 25. embryo. 
PARllYA. 
Chau. Gen. Siliqua lato-linearis, valvis venosis, Semina biseriata, testae epidermide 
