3. A. hypericifolium; foliis cordato-oblongis glabris sessilibus mucronatis, cymis folio
brevioribus, calyce tubum coroll® sequante.— (Tab. CXL.)—Ait. Hort. Kew. v. l.p . 304.
Pursh, FI. Am. v. 1. p. 179. Torrey, FI. Am. v. 1. p. 276.—A. Sibiricum. Jacq. Hort. v.
3. p. 66. ( non Pall.)■ —/3, foliis latioribus.
H ab. Throughout Canada to the Saskatchawan. Dr. Richardson, Drummond. Lake Huron. Dr.
Todd.—/3. West side of the Rocky Mountains. Douglas.—This is a stouter and more upright-growing
plant, and less branched, than the preceding; but the upper leaves are sometimes acute at the base, and
slightly stalked, and then it is with difficulty distinguished from A. cannabinum. Of the var. /3. Mr. Douglas
observes that the flax is used by the tribes residing on the west side of the Rocky Mountains to make
their fishing-nets. They are strong, buoyant, and answer the purpose extremely well.
Tab. CXL.—Fig. 1, Flower ;fig. 2, Stamens ;fig. 8, Pistil -.—magnified.
Ord. LVIII. ASC L EPIA D E® . Br.
ASCLEPIAS. Br. Aset. sp. L.
Corolla 5-partita, reflexa. Corona summo tubo filamentorum imposita, 5-phylla, foliolis
cucullatis, e fundo exerentibus processum aversum corniformem. Antherce membrana ter-
minatse. Masses pollinis compress®, apice attenuato affix®, pendul®. Stigma depressum
muticum. Folliculi (plerumque) l®ves. Semina comosa.—Herb® Americanee erectce.
Folia opposita nunc altema! vel verticillata. Umbell® interpetiolares. Br.
* Folia semper opposita.
1. A. Syriaca; caule subsimplieij foliis oblongo-ovalibus ovatisve acutis subtus tomento-
sis, umbellis multifloris, coron® foliolis ovatis obtusis cornu longioribus intus bidentatis,
folliculis muricatis.—Linn.—Pursh, FI. Am. v. l.p . 181. Torrey, FI. v. l.p . 279.—/3.
Mich. Am. v. l.p . 114.
H ab. Canada {Mrs. Percival, Mrs. Shepperd) to the Saskatchawan. Dr. Richardson, Drummond.
Lake Huron. Dr. Todd.
2. A. variegata; caule erecto simplici, foliis ovatis brevi-petiolatis, umbellis terminalibus,
coron® foliolis obovatis subcucullatis patentibus cornu acuminato brevioribus intus basin versus
bidentatis.—«. major ; foliis utrinque glabris, umbellis densifloris, coron® foliolis late obovatis
cornu latissimo rostrato.— A. variegata. L.—Bot. Mag. t. 1182. Pursh, FI. Am. v. 1.
p. 181. Elliott, Carol, v. 1. p. 317. Torrey, FI. v. l.p . 281.—A. hybrida. Mich.—13. minor;
umbellis laxis paucifloris, foliis subtus pr®cipue pubescenti-tomentosis, coron® foliolis
obovatis cornu angustiore minus evidenter rostrato. (Tab. CXLI.)
Hab. /3. Carlton House Fort. Dr. Richardson. Plains of the Red River and banks of the Assinaboine.
Douglas.—The usual state of this plant I have not seen from British America; nor am I sure that I am
correct in considering this a variety of that species. It is smaller in every part; the leaves very downy
beneath, and more obtuse at the base ; and there are the differences mentioned above in the inflorescence
and flowers. The shape of the horn, however, in the solitary specimen I have from Mr. Douglas, is
much broader, and more like that of the true A. variegata, than it is in Mr. Drummond’s plants.
3. A. Douglasii; caule subsimplici, foliis cordato-ovatis acutis subtus umbellis multifloris
calyce corollisque dense tomentosis, coron® foliolis ovatis longe acuminatis cornu longioribus
intus bidentatis. (T ab. CXLIL>)>
Hab. On low points of land on the banks of streams, west side of the Rocky Mountains; rare.
Douglas.—Leaves somewhat resembling the last species, but broader and more coriaceous. The flowers
thrice as large, and also remarkable for the great length of the coronal leaflet.
Tab. CXLIL— Fig. 1, Flower ; fig. 2, Leaflet of the corona with its horn.
4. A. nivea; caule erecto simplici, foliis lato-lanceolatis acuminatis membranaceis glabris
subtus pallidioribus, umbellis multifloris laxis, coron® foliolis truncatis dentatis cornu brevioribus,
folliculis Iffivibus.—Linn.—Bot. Mag. t. 1187. Pursh, Ft. Am. v. l.p . 181.—
P. phytolaccoides. Lyon.—Pursh, FI. Am. v.l. p. 180. Elliott, Carol, v. 1. p. 319. Torrey,
FI. v. 1. p. 280.
Hab. Canada. Dr. Holmes.—I have received the fruit, which is very rare and had not been seen by
Dr. Torrey, from Dr. Darlington. The figure in the Bot. Magazine is excellent; and I think I am correct
in uniting Pursh’s A. phytolaccoides with A. nivea.
5. A. viridiflora; caule simplici pubescente, foliis ovalibus oblongis lanceolatisve subses-
silibus apiculatis subtus pr®cipue pubescentibus, umbellis lateralibus densissime multifloris
subsessilibus, coron® foliolis oblongis retusis erectis appressis dorso canaliculate longitudine
column® cornu nullo. (T ab. CXLIII. A.)—Raf.—Pursh, FI. Am. v. 1. p . 181. Torrey,
FI. v. 1. p . 264.—A. obovata. Ell.—/3. lanceolata; foliis elongato-lanceolatis crispatis.
(Tab. CXLIII. B.)—A. longifolia. Mich. ?—A. lanceolata. Ives, in Sillim. Journ.
Hab. Head of Lake Erie. Mr. Goldie. About Carlton House Fort, both «. and /3. Dr. Richardson. /3.
Banks of the Red River. Douglas.—Exceedingly variable in the form and length of its leaves. The species
agrees with Gomphocarpus in the absence of the horn to the leaflets of the corona, but differs in the
smooth follicles. The leaflets of the corona are singularly erect, oblong, retuse, channelled down the back ;
the margins incurved and united by their lower half with the neck of the column, each having a small
auricle on either side, at the top of the juncture.
Tab. CXLIII.—Fig. 1, Flow er;^. 2, Portion of the corona, seen from within -.—magnified.
6. A. incarnata; pubescens vel glabra erecta ramosa, foliis oblongis lanceolatisve, umbellis
terminalibus plurimis s®pe geminis, columna elongata, coron® foliolis erectis ovalibus
obtusis cornu subulate incurvo brevioribus.—L .—Mich. Am. v. l.p. 115. Elliott,
Carol, v. 1. p. 320. Bot. Reg. t. 250. Torrey, FI. v. l. p. 281.
Hab. Throughout Canada to the Saskatchawan. Dr. Richardson, Drummond.—Extremely variable
in the length, and breadth, and downiness of the foliage; generally quite glabrous. Frequently, when the
stem is otherwise glabrous, a hairy line runs along one side of it. The figure in Bot. Register is excellent.
All that I have received from the American Botanists as A. amtena, I cannot distinguish specifically from
the present; indeed, the species of this genus have been very ill defined, and require careful revision. The
leaflets of the corona and the horn appear to afford some of the best marks of distinction. The A. amcena
of Sweet’s FI. Garden, t. 82, seems to me referable to a deep-coloured state of A. Syriaca.