Parrj/a.] CRUCIFERiE. 



47 



1. P, macrocarpa ; siliquis lato-Iinearibusj aatheris linearibus, foliis lato-Ianceolatis in- 

 ciso-dentatis. (Tab. XV,) — Br. in Parry's 1st Voy. App, p. cclxx, Cham, et Schlecht in 

 Linncea, v. 1. p, 18. — Neuroloma arabidiflorum. De Cand, Prodr, v, I. p. 156; et Hesperis 

 arabidiflora. De Cand. Syst Veget v. 2, p. 454. — Neuroloma nudicaule. De Cand. Prodr. 

 V, 1. p. 156; et Arabis nudicauiis, De Cand, Syst. Veget. v. 2. p. 240, — -Neuroloma scapi- 

 gerum? De Cand. Prodr. v,l. p. 156; et Hesperis scapigera? De Cand. Syst Veget. v. 2. 

 pu 454. — Cheiranthus scapiger? Adams, " Mem. Soc. Nat. Scrut. p. 112. n, 18," — Carda- 

 mine articulata. Pursh, Fl. Am* v. 2. p. 439. 



«. aspera, piloso-glandulosa. — Arabis, caule nudo. Linn, Amcen. Acad, v. 2, p. 358. t* 4, 

 Jl 20. — Arabis grandiflora. Willd. Sp, PL — Neuroloma arabidiflorum. ^. De Cand. 



^. glabra, tota glaberrima. — Neuroloma arabidiflorum. ». De Cand. (excluding tlie syn., 

 which belongs to var. «.) 



Herba pubescenti-glaudulosa in «,, ia )3. glabra. Radix fusiformis, descendens, radiculosa. Folia 

 fere omuiuo radicalia, crassluscula, digitalis et ultra, erecta, lato-lauceolata, acuta, in pctiolum lougum 

 basi attenuata, raargine sinuato-vel inciso-dentata, rarissime sabintegra. Scapus florescens foliis pauIo 

 longior, fructiferus duplo longior, erectus, teres. Flores itiagni, speciosi, corymbosi. Pedicelli glabri 

 in «., in (l. gland uloso-pubescentes, graciles, calycem excedentes. Calyx ; sepalis oblongis, erectis, 

 concavis, duobus basi gibbosis. Petala puloberrime purpureo-rosea, oalyce duplo longiora, limbo patente 

 late obovato, venoso, retuso, basi in unguera attenuato. Stamina wnguibus petalorum sublongiora; 

 Filamenta subulata: Antherm oblongo-lineares. Glandut<B ad basin filaraentonim 4. Pistillum: Germen 

 lineari-lanceolatum, in stylum perbrevem attenuatum : Stigma lobis brevibus erectis approximatis. Siliguce 

 fere 2 uncias longae, 2 liueas lafce, sublonge racemosse, erecta*, subcurvatae, lato-Iiueares, inter semina 

 subconstrictie, paululum torulosse, plano-corapressBe, in «. scabrse, in /J. glabrae. ValvcB planse, marginatfe, 

 dorso medio uninerves, venosae, venis nonnunquam obscune, Semina plurima, vix biserialia, hie illic abor- 

 tientia, pendentia, compressa, testae epidermide laxo, vix comigato, ala lata, membranacea, alba formante. 

 Cotyledones acciunbentes. Funiculus umbilicalis subulatus, in partem, septo aduatus. 



Hab. Found during the Second Land Arctic Expedition, and then only by Copt. Sir J. Franklin and 

 Capt Backj to the west of the Mackenzie River. Frequent on the shores of Kotzebue's Sound, and the 

 adjacent coast. Lay and Collie in Capt. Beeckey's Collection. Island of St. Lawrence. Chamisso. — This is 

 a noble species of a beautiful and well marked genus, worthy of bearing the name which Mr. Brown lias 

 applied to it, in compliment to an officer of the most distinguished merit, who has, in every voyage, particu- 

 larly to the Arctic regions, by his own exertions, and by those of his officers, contributed mainly to our 

 present accurate knowledge of the botany of those countries ; and whose friendship to myself I am here 

 proud to acknowledge. Capt. Sir John Franklin only met with the plant in flower. Capt Beechey's col- 

 lection contains many fine specimens in fruit, from which the figure of that state is represented in this work. 



Tab. XV. A. Flowering state of the var. /3. glabra; B. Fructified state of the var. «. scabra: natural size. 

 Fig. 1, Sepal of the calyx; Jig. 2, Petal; ^^. 3, Stamen; 7?*/. 4, Pistil; Jig. 5, Style and stigma; j^^. C, 

 Siliqua ; Jig. 7, Seed ; Jig. 8, Seed deprived of the epidermis of the testa ; Jig. 9, Embryo '.—more or less 



riiagnijied. 



2. P.arctica; siliquis lineari-oblongis, antheris ovalibus, fohis (fere omnibus) integer- 

 rimis, pedunculis glaberrimis. — Br. in Parvus \&t Voy, App. p. cclxix. t. B. Hook, in 

 Parry's 2d Voy. App, p, 388. 



Hab. On the eastern Arctic islands. Captain Sir EdiJoard Parry. Captain Sabine. Captain Ross. Shores 

 of the continent of Arctic America, eastward of the Mackenzie River. Dr. Richardson.— As the P, macro- 



