cclxviii 
APPENDIX. 
zantibus inconspicuis, glaberrima : petiolis folio 4-5-ies longioribus, linearibus mcmbranaceis, 
albicantibus, adversus lucem trinerviis ; caulina radicalibus conformia, inferiora brevi pe- 
tiolata, superiora subsessilia. Corymbi 7-10-flori, densi, folio florali sessili saepe subtensi, ca> 
terum ebracteati. Calyx glaber, sepalis aequalibus, ovatis, obtusis, modice concavis, trinerviis, 
extra medium purpurascentibus, insertione parum inaequalibus. Petala alba, calyce sesquilon- 
giora, ungues breves, laminae obovatae, (vel ex ovali obovatae) obtusse, integerrimae, planae, 
obsolete uninervise, vix manifeste venosae. Glandules receptaculi quatuor, per paria approxi- 
mate, latera filamentorum breviorum stipantes, parvse. Stamina tetradynama. Filament a 
subulata, glabra, edentula, duo lateralia paulo breviora basi aversa (acie nec superficie plana 
ovarium spectanti.) Anther as uniformes, ovato-subrotundae, incumbentes, infra medium affixe, 
loculis parallel o-contiguis, longitudinaliter dehiscentibus. Pollen fiavum, 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. Siliqua, (siliculosae) 
racemosae, erectae, linear i-lanceolat;e, ancipites, glaberrimae, vix trilineares, stigmate obtuso 
indiviso subsessili apiculatae. Valves carinatse, carina manifesta/venis immersis, cortice demum 
ad margines solubili, in disco arctius adherenti ; replum cortice pariter separabili. Dissepi- 
mentum, praeter basin apicemque ubi sepius completum, plerumque margo perangustus ad 
utrumque latus cujus processus membranaceus angustior e quo funiculi umbilicales brevissimi 
obtusi crassi papillagformes orti. Semina immarginata, fusca, laevia. Cotyledones incum- 
bentes, lineari-oblongae, plano-convexiusculae, basi attenuate, brevi in crure radiculari sita. 
Obs. This species is named in honour of Mr. Edwards, Surgeon of the Hecla, from 
whose extensive and well-preserved herbarium I have derived great assistance in drawing 
up the present list, and in which only perfect specimens with ripe siliqua? of Eutrema 
Edwardsii "were found. 
EXPLICATE) TABULA— A. 
Eutrema Edwardsii.' — 1. Planta florida, et 17. fructifera ; utraque magnitudine natu- 
rali. Sequentes magnitudine auctae ; 2. flos integer ; 3. petalum ; 4. flos petalis orbatus ; 
5. sepalum (foliolum calycis) ; 6. stamina et pistillum integumentis floralibus avulsis ; 7. 
stamen Iongius ; 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. placenta? 
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. 
PARRYA. 
Char. Gen. Siliqua lato-linearis, valvis venosis, Semina biseriata, testes epidermide 
