latis pilosis vel glabriusculis, stipulis semisagittato-dentatis, floribus subgeminis sessilibus,
calycibus cylindraceis, laciniis lanceolato-linearibus subæqualibus parallelis tubi longi-
tudine, stylis apice barbatis, leguminibus compressis subtorulosis oblongis reticulatis
erectiusculis, seminibus subglobosis subvelutinis. De Cand. Prodr. v. 2. p. 360. Engl. Bot.
t. 334. Mich. Am. v. 2. p. 69. Pursh, Fl. Am. v. 2. p. 471. Bigel. Fl. Bost. ed. 2. p. 270.
Hab. Canada. Mrs. Sheppard. About Fort-Vancouver. Douglas.—Probably an introduced plant.
20. ERVUM. Lirai.
Cal. 5-fidus, laciniis linearibus acutis, corollam subæquantibus. Stigma glabrum. Legu-
men oblongum. DC.
1. jE. hirsutum ; foliis cirrhosis, foliolis linearibus obtusis mucronulatis, stipulis semi-
sagittatis angustis, pedunculis 3-6-floris folio brevioribus, laciniis calycinis lanceolato-
linearibus æqualibus tubo longioribus, leguminibus oblongis compressis subtruncatis
hirsutis tenuissime reticulatis dispermis nutantibus, seminibus globosis variegatis. DC.—
Linn. Sp. PI. p. 1039. Engl. Bot. t. 971. De Cand. Prodr. v. 2. p. 366.—Vicia Mitchelli.
Bafin.—Elliott, Carol, v. 2. p. 224. De Cand. Prodr. v. 2. p. 360.
Hab. Cultivated in the garden of the Horticultural Society, from seeds gathered near Fort-Vancouver,
(where it was probably introduced.) Douglas.—My specimens of Vicia Mitchelli from Mr. Elliott himself,
prove it to be merely E. hirsutum.
2. E. tetraspermum ; caulibus cæspitosis ramosis, foliis cirrhosis, foliolis 4-6 oblongis
mucronulatis, stipulis lanceolato-semisagittatis, pedunculis 1-4-floris filiformibus, laciniis
calycinis inæqualibus latiusculis tubo brevioribus, leguminibus oblongis compressis glabris
enerviis subtorulosis, seminibus subglobosis atris.—Linn. Sp. PI. p. 1039. Engl. Bot. t.
1223. De Cand. Prodr. v. 2. p. 367.—Vicia pusilla. MuhL in JVilld. Sp. PI. v. 3. p. 1106.
Pursh, FI. Am. v. 2. p. 471. Bigel. FI. Bost. ed. 2. p. 270.
Hab. Grassy meadows, Upper Canada. Douglas.
21. LATHYRUS. Lirai.
Cal. campanulatus, 5-fidus, lobis duobus superioribus brevioribus. Cor. papilionacea.
Siam, diadelpha. Stylus complanatus, apice dilatatus, antice villosus aut pubescens. Legu-
men oblongum, polyspermum, bivalve, 1-locul. Semina globosa aut angulata.—Herbæ
soepius scandantes. Stipulæ semisagittatoe. Petioli apice in cirrhum ramosum abeuntes.
Foliola 1-3-juga. Pedunculi axillares, DC.
1. L . pisiformis ; glabriusculus, foliolis 3-4-jugis ovalibus, stipulis inæquilateraliter cor-
dato-hastatis angulis acutis foliolo æqualibus, pedunculis multifloris folio subbrevioribus,
(corollis purpureis), laciniis calycinis duabus superioribus abbreviatis, leguminibus lineari-
oblongis compresso-teretibus subfalcatis, apice ad suturam superiorem acuto.—Linn. Sp.
PI. p . 1034. Willd. Sp. PI. v. 3. p. 1093. De Cand. Prodr. v. 2. p. 371.—L. maritimus.
Bigel. Fl. Bost. ed. 2. p. 268. (fide specim. ab amiciss. Boott.)—L. Californicus. Douglas,
in Bot. Beg. t. 1144, (certe.) L. venosus. Sweet, Br. Fl. Gard. 2d. Ser. t. 37. (non Willd.)
Bigel. Fl. Bost. ed. 1. p. 167, (non ed. 2.) Boott in Herb.—Pisum maritimum. Linn. et
aliorum. Engl. Bot. t. 1047. Bich. in Frankl. ls£ Joum. ed. 2. App. p. 28.—Gmel. FI. Sib.
v. 4. p. 7. t. 1.
Hab. Throughout North America, in the plains (beyond lat. 40° ?) from Lake Erie in the south, (Dr.
Todd; Douglas,) about Quebec and Montreal, (Lady Dalhousie ;' Mrs. Perdval,) Saskatchawan, (Dr.
Richardson; Douglas,) to the shores of the Arctic Sea, (Dr. Richardson,) Newfoundland and Labrador on
the east, Mr. Cormack; Mr. Morrison; and Murray Bay, mouth of the St. Lawrence. Mrs. Sheppard.
North-West America, from the coast of California and the mouth of the Columbia, (Dr. Scouler; Douglas,)
to Kotzebue’s Sound in Behring’s Strait. Messrs. Lay and Collie.—Botanists will see with surprise, and, I
fear too, with some suspicion of the correctness of the measure, that I have united the well-known Pisum
maritimum of our shores with a Siberian Lathyrus, and have added to the same the most universally diffused
Leguminose plant in all the temperate and colder parts of North America. I have not done so, however,
without the most cautious scrutiny of numerous specimens. Let any one carefully examine the style of
Pisum maritimum, and compare it with that of Pisum sativum, or any indisputable Pisum, and it will be at
once seen that they are very different; the former wanting altogether the sharp carinated ridge on the superior
side, (caused by the reflection of the margins,) on the upper part of which the down is produced. If, again,
this style be compared with that of the true Lathyri, it will be found to accord in every essential particular,
though it is not so much dilated upwards as in many. It is a stylus compressus sursum dilatatus antice
villosus aut pubescens: and it precisely corresponds with the same part of the flower in the American
Lathyri above quoted. This being determined, it remained for me to see what were the specific differences
between the plants in question. I could find none. Upon the sandy and stony shores, the plant is humble
in its growth, and compact; in the woody districts it becomes larger and more straggling. The stipules I
always find to be cordato-hastate, with their sides, at the base, unequal (sometimes toothed,) rather than semi-
sagittate. The legumes are slightly pubescent in British and American specimens. The leaves and calyx
are mostly somewhat downy or hairy, the latter especially on the teeth; but at other times the whole plant
is perfectly glabrous. My specimens from the West coast of North America are usually more lax, flaccid,
and drawn up, as it were, as if inhabiting woods: others, again, from the same coast, are more compact, and
of a firmer texture, exactly corresponding with cultivated specimens from the Horticultural Society’s
Garden, of which the representation in the Botanical Register is excellent. I acknowledge that in calling
this plant by the name of L. pisiformis, Linn, and Gmelin, I have no other authority than the figure and
description of the latter author: but our plant is so entirely in accordance with them, that I think there
can hardly remain a doubt on the subject.
2. L. ochroleucus; glaberrimus, foliolis 3-4-jugis lato-ovalibus ovatisve, stipulis latis
semi-cordatis subhastatis angulis obtusis nunc obtuse dentatis foliolo vix minoribus,
pedunculis multifloris folium subaequantibus, (Corollis ochroleucis,) laciniis calycinis
duabus superioribus abbreviatis, leguminibus (nondum maturis) lineari-elono-atis
acuminatis compressis glaberrimis.— L. pisiformis, var. Bich. in Frankl. |p f Joum. ed. 2.
App. p. 28.
H ab. Hudson’s Bay. Mr. R . Wright. From the Red River, in lat. 4 9 ° , (Douglas,) through the whole
woody country to Bear Lake, in lat. 66°. Dr. Richardson; Drummond.—This plant is, indeed, very nearly
allied to the preceding; yet in all the specimens I possess, the stipules are rather smaller (often considerably
so) than the leaflets, having at the base only one lobe; the flowers are smaller, ochroleueous, and the whole
plant is more delicate and quite glabrous. In Dr. Richardson’s Z. pisiformis, which, indeed he referred
doubtfully to the Z. pisiformis of Willd., the lower stipules are as small as those of the following species;
while the upper ones are very large.
3. Z. decaphyllus; glaber vel pubescens, foliolis 4-6-jugis ellipticis rarius ovatis vel
suboblongis, stipulis parvis semisagittatis lanceolatis lobo deflexo stipulam subsequante,
pedunculis folii longitudine multifloris, calyce dense pubescente, dentibus duobus