». floribus luteis, petalis subintegris.
p. floribus fere albis, petalis emarginatis.
H ab. «. About Lac la Pluie, and Rocky Mountains, (not found in the low grounds.) Drummond. ^. North-
West coast of America. Douglas.
25. D. muralis ; pubescens, caule ramoso folioso, foliis late ovatis caulinis cordatis sub-
amplexicaulibus profunde dentatis, siliculis elliptico-oblongis sub 16-spermis pedicello
paulo brevioribus. (floribus albis.)—Linn. Sp. PL p. 897. Engl. Bot. t. 192. De Cand.
Prodr. v. 1. p. 171.
H ab. About Montreal. Mr. Cleghom.— Petals white, entire or sometimes notched upon the same plant.
Such is the 'best account I have been able to draw up of the individuals of this most difficult genus,-
Draba. It is to me most unsatisfactory; and all I can offer in its favour is, that, in general, the species of
which it is composed have a peculiarity of aspect and growth, by which they are better distinguished than by
the characters here laid down. But there are, among the Europsean and Northern Asiatic species existing in
my Herbarium, many of which I am quite at a loss to determine whether or not they are different from the
North American ones.
---- 13. EROPHILA. DC. _
Silicula ovalis aut oblonga, valvis planis. Semina plurima, immarginata. Cal. sequalis.
Petala bipartita. Siam, edentula.—Herbae annua, scapis nudis, floribus albis. DC.
1. E. vulgaris; siliculis ellipticis pedicello brevioribus, scapis 5-15-floris.—De Cand.
Prodr. v. 1. p. 172.-—Draba verna. Linn. ■ Sp. PI. p. 896. Engl. Bot. t. 586. Pursh, FI.
Am. v. 2. p. 433.
H ab. Canada. Pursh.—I have not seen this in any collection from British America, and.am unable to
say whether the plant alluded to by Pursh be the common Europaean state of E. vulgaris, or, as is more probable,
the E. americana of DC., which only differs in its longer siliculse, according to specimens sent to me
from New York, by Dr. Torrey; and which that gentleman has ascertained to be Draba hispidula of
Muhlenberg.
14. COCHLEARIA., Toum.
Silicula sessilis, ovato-globosa aut oblonga, valvis ventricosis. Semina plurima, immarginata.
Cal. sequalis, patens. Pet. integra. Stam. edentula.—Flores albi. Folia sapius
camosa. DC.
1.. C. oblongifolia; siliculis subrotundis pedicello dimidio brevioribus, foliis caulinis
oblongis integris (vel sinuato-dentatis) sessilibus, summis brevissime auriculatis.-r-De Cand.
Prodr. v. 1. p. 363. Cham, et Schlecht. in Linncea, v. 1. p. 26.
« Valde similis Cochlearia officinali ! Differe videtur: foliis caulinis basi magis angus-
tatis, amplexicaulibus quidem, auriculis vero minus productis; floribus minoribus, siliculis
stylo breviori apiculatis. An species? Ut congeneres variat habitu et statura.”—Cham,
et Schlecht
H ab. Islands of St. Lawrence and Unalaschka. Chamisso. Kotzebue’s Sound. Lag and Collie in
Copt. Beechey’s Collection.—I possess authentic specimens of this from Dr. Fischer, which confirm the
observations above given.
2. - C. anglica ; siliculis elliptico-globosis venoso-reticulatis pedicello dimidio brevioribus,
foliis radicalibus petiolatis. ovatis integris, caulinis oblongis. DC.—Linn. Sp. PI. p.
903. Engl. Bot. t- 552.- De Ca/nd. Prodr. v. 1. p. 364.
Hab. Shores of the Arctic Sea and islands adjacent, from east to west; Observatory Inlet. Dr.
Scouler.— It is often difficult, especially in a dried state, to distinguish this from C. officinalis; nor
do I think that the two species, are generally well understood by Botanists. If the Engl. Bot. fig., t.
552, be the true C. anglica, our most frequent Arctic species is certainly that plant. The siliculm ’are
broadly elliptical, the reticulations more or less apparent, the dissepiment sometimes fenestrate, as I find it
to be in British individuals.
3. C. fenestrata; siliculis ellipticis ovalibusye, valvis submenus, dissepimento elliptico-
lanceolato, axi saspius fenestrato, foliis radicalibus cordatis irndgerrimis, caulinis spathulato-
oblongis subdentatis.—Brown in Basis Voyed. 2. v. 2. p. 193, et in Parry’s 1st Voy. App.
p. cclxvi. De Cand. Prodr. v. 1. p. 173.
H ab. Shores of the Arctic Sea; Oapts. Boss and Sir.B. Parry: and it is probably in the other coilec-
tions; but I confess that I cannot satisfactorily distinguish it from C. anglica.
4. C. officinalis; siliculis ovato-globosis pedicello dimidio brevioribus, foliis radicalibus
petiolatis cordatis, caulinis ovatis dentato-angulatis. DC.—Linn. Sp. PI. p 903 Enal
Bot.t. 551..
Hab. Arctic shores. Whale Fish Islands? Capt. Sir E. Parry. Coast to the westward of Mackenzie
River. Capt. Sir John Franklin and Capt. Back.—One specimen in each of the above-mentioned voyagers’
collections, seems to me to correspond in foliage with our Europsean C. officinalis, taking the English
Botany figure as the type of the species; but neither is in fruit.
5. C. danica; siliculis ellipsoideis pedicelli longitudine, foliis omnibus petiolatis deltoi-
deis.. DC.—Linn. Sp. P i p. 903. Engl. Bot. t. 100. Cham, et Schlecht. in Linnaa, v. 1.
^.,26.
H ab. Arctic shores. North Somerset. Capt. Sir E. Parry. Westward of the Mackenzie River.
Capt. Sir John Franklin and Capt. Back.
6. C. trid a c ty lite s siliculis, ovato-globosis, foliis caulinis dente unico utrinque grosse-
subtrilobatis. DC.—Banks’ Herb.—De Cand. Syst. v. 1. p. 174.
Hab. Labrador; Herb. Banks.; according to De Candolle.
7. C. spathulata; stellatim pubescens, siliculis ellipsoideo-globosis, foliis spathulatis
grosse dentatis acutis venosis.—Schlecht. pat. in Herb. WiUd.—De Cand. Prodr. v. 1. p. 174.
Cham, et Schlecht. in Linncea., v. 1. p. 27.—C. septentrionalis. De Cand. Prodr. v. 1. p.
174. (“ excl. syn. Schlecht. pat. in Herb. Willd.”)—Draba grandis. Langsdorff, MSS.—De
Cand. Syst. v. 2. p. 355. De Less. Ic. v. 2. f . 47.
Hab. Aleutian Islands of St. George and St. Paul, lat. 56°, 57°. Chamisso.—Of this interesting plant I
possess beautiful specimens, both from Dr. Fischer and from Chamisso. The latter considers it as the only
plant ^peculiar to the islands just mentioned, and has published an excellent description of it in the Linncea
above quoted. In a dried state, the large siliculce are generally pressed flat, whence arose the mistake of
considering it a Draba. In habit and pubescence it is far removed from the preceding Cochlea-rice.
8. C. siliquosa; siliculis oblongo-lanceolatis stylo apiculatis pedicello dimidio breviori