Schleohtendal should be referred hither, as I rather suspect, I do not possess sufficient materials to decide:—
it is said to have a biennial root.
Tab. XXI. Plant:—natural size. Fig. 1, Flower; Jig. 2, Petal; Jig. 3, Stamen; Jig. 4, Pod; Jig. 5,
Seed; Jig. 6, Embryo; Jig. 7, Section of the seed:—magnified.
20. ERYSIMUM. Linn.
Siliqua tetragona. Calyx clausus. Cotyledonesplanse, oblongse. DC.
* Erysimastrum. Stylus brevis vix ullus. Siliqua tetragona. Calyx deciduus. Folia nec
cordata, nec amplexicaulia. Flores distincte pedicellati.
1. E. cheiranthoides ; scabriusculum, pube minutissima tripartita, foliis lanceolatis sub-
denticulatis viridibus, siliquis erecto-patulis pedicello duplo longioribus, stigmate parvo.—
Linn. Sp. PI. p. 923. Jacq. Austr. v. 1. t. 23. Pursh, FI. Am. v. 2. p. 436. De Cand.
Prodr. v. 1. p. 198. Rich, in Frankl. ls£ Joum. ed. 2. p. 27.
/3. ramis elongatis folia multo minora gerentibus.
caulibus simplicibus.
Hab. Throughout Canada, and in all the plains westward of the Rocky Mountains, to lat. 67° on . the
Mackenzie. North-West Coast, lat. 47°, 48°. Douglas. Scouler.—This plant is liable to much variation
in its general appearance, depending probably mainly on age and situation. The first year’s plant, for it appears
to be-biennial, would seem to have quite simple stems. In the more usual state, it is much branched,
the branches rather short, and bearing leaves not much smaller than those of the stem: whereas, in my var.
the branches are virgate, and clothed with small narrow leaves.
2. E. lanceolatum; pube bipartita appressa ubique incanum asperum, caule subsimplici,
foliis lineari-lanceolatis inferioribus plerumque dentatis, unguibus calyce longioribus, siliquis
longis erectis, stigmate emarginato.—Br. in Hort. Kew. ed. 2. v. 4. p. 116. De Cand.
Prodr. v. 1. p. 199. Cham, et Schlecht. in Linncea, v. 1. p. 29.—Cheiranthus erysimoides.
Linn.—Jacq. Austr. v. 1 .1. 74.—an E. virgatum? Roth.—De Cand.
Hab. From Canada to the shores of the Arctic Sea, and to the Pacific.—This entirely agrees with my
European specimens of E. lanceolatum, and also with the figure above quoted in Jacquin; but the leaves
are not generally so hoary, nor are the flowers quite so large. Its narrow, more pubescent leaves, shorter
pods, and large flowers distinguish this from the simple stemmed varieties of the preceding; its smaller flowers,
less hoary foliage, and upright and shorter pods from the following. Cotyledons certainly incumbent.
3. E. (potius Cheiranthus) asperum; pube bipartita appressa ubique incanum asperum,
caule simplici, foliis lineari-lanceolatis integris, radicalibus runcinato-dentatis, unguibus
calyce longioribus, siliquis longis patentibus, stigmate bilobo. (Tab. XXII.)—De Cand.
Prodr. v. 1. p. 199.— Cheiranthus asper. Nutt. Gen. Am. v. 2. p. 69. (non Cham.) Torrey
in PI. o f R. M. Ann. o f Lyc. o fN . Y. p. 166.
Hab. About Carlton House on the Saskatchawan, lat. 65°* Dr. Richardson. Barren grounds of the
Columbia, from the Great Falls upwards. Douglas.^-This is a very handsome species, with flowers, as Mr.
Nuttall observes, of a bright yellow colour; resembling those of Cheiranthus Cheiriand almost equally fra-
oTant. The pods are three inches long, patent, wavy before they are quite ripe. The great size of the
petals, and longer and spreading pods distinguish this from E. lanceolatum, to which, in other respects, it is
very similar. It seems to have been originally detected by Mr. Bradbury on the banks of the Missouri, at a
distance of 1100 miles from its mouth.—I possess that traveller’s original specimens, named by Mr. Nuttall,
which precisely accord with these from Carlton House and the Columbia. Dr. Torrey says that the plant
is very bitter, particularly the root, and is used as a medicine by the Indians of the Platte. Of the present
plant I regret not to have perfect fruit. The seeds in the fully formed, but yet unripe pods, have the embryo
not conduplicate, but ourved, and the curvature is directed towards the margins of the cotyledons, hence
the latter are accumbmt. Thus will this plant, together with many others, have to be removed from the
division of the order in which they are placed, on account of the supposed structure of the embryo.
Daily experience proves that primary divisions taken from this character, are neither convenient in practice
nor do they guide us to a natural arrangement.
21. CAMELINA. Grantz. .
Silicula obovata aut subglobosa, valvulis ventricosis cum styli parte dehiscentibus, locu-
lis polyspermis. Stylus filiformis. Semina oblonga, immarginata. DC.
1. C. barbareafolia; siliculis globosis, foliis oblongis pinnatifidis basi obtuse auriculatis,
caule basi villoso.—De Cand. Syst. Veget. v. 2. p. 517, Prodr. v. l. p. 201. De Less. Ic.
Sel. v. 2. t. 70. Cham, et Schlecht. in Linnoea, v. 1. p. 29.
Hab. In the Bay of Eschscholtz. Chamisso.
22. BRAYA. Stemb. et Hoppe.
Siliqua brevis, teres, torulosa, stylo terminate, valvis subsemicylindraceis. Stigma plani-
usculum. Dissepimentum medio fissum. Semina quoque ioculo subsex. Calyx basi
asqualis, sepalis erectis.—Perennes, radice crassa longe descendentc. Folia pleraque radi-
calia, angusta. Scapi breves nunc Jbliosi. Flores parvi, corynibosi, purpureo-albi.
1. B.alpina; foliis glabris, scapo parce folioso, racemis fructiferis capitatis.
«. europaa; stylo brevissimo.—B. alpina. Stemb. et Hoppe in Bot. Geselsch. Beg. v. I.
p. 66. t. I. Hook. Ex. FI. v. 1 .1. 121. De Less. Ic. v. 2. t. 22.
/3. americana; stylo longiusculo gracili.
Hab. fi. Alpine rivulets among the Rocky Mountains, between lat. 52® and 57°.—The few specimens of
this in Mr. Drummond’s collection are in an excellent state of fructification, and they differ in no respect
from the European plant in my possession from the Carinthian Alps, except in the greater length of the
style, which, indeed, is very striking. I have already noticed, in the Exotic Flora, that the genus°had been
hitherto referred to the Pleurorhizeai, whereas, its cotyledons are decidedly incumbent. So short, too, is
the seed-vessel, that it has almost as great a claim to be ranged with the Siliculosce as the Siliquosas. In
habit, it accords with Parrya, Eutrema, and especially with the following genus, Platypetalum of Brown.
2. B. glabella; foliis glabris, scapo plerumque folioso, racemis fructiferis laxis elongatis.
—Rich, in Frankl. ls£ Joum. ed. 2. App. p. 25. De Cand. Prodr. v. 1. p . 141.
Hab. Arctic America; on the Copper Mountains; and principally on the shores of the sea between
the Mackenzie and Coppermine Rivers. Dr. Richardson.—Excellent specimens of this, brought home by
Dr. Richardson from the Second Arctic Land Expedition, quite confirm the distinguishing characters given
by that gentleman in his Botanical Appendix. He adds, in the margin of his own copy, from notes taken
on the spot, that the “ scape is sometimes hairy, with bifurcated pubescence, and that the flowers are white
with a slight and partial tinge of purple.”
3. B. ? pilosa; foliis pilosis, scapo aphyllo, racemis demum elongatis. (Tab. XVII.)
Radix perennis, fusiformis, lignosa, longe in terrain descendens, et versus apicem ramosa, superne ad
collum divisa, et plurimas rosulas foliorum sustinens. Folia omnia radicalia, patentia, densa, lineari-lanceo