distinguished from the species already described by its much larger size, stouter habit, darker colour, its
narrower leaves, especially the upper ones, and the more acute and fewer lobes. The structure of the
Stigma is, I think, different from its congeners: it is longer than the Style, with the sides or margins
dilated into a brown membrane; the upper surface minutely papillose, as in its affinities. Linnteus seems
to have established this species upon the figure and description of T. Comuti, and to have had no specimen
in his herbarium; it is impossible, therefore, to say, with his very imperfect description alone to guide us,
what particular plant is intended by that author; but the present seems to be what Pursh had in view for
T. Comuti, and it is as well to retain this as a specific name as to reduce it to a doubtful synonym, as De
Candolle has done. I have been aided in the other synonyms by specimens from various American Botanists,
and there cannot be a question that the North American Thalictra will bear to be still farther reduced.
T. carolinianum, for example, of Bose and De Candolle, is but a variety, with dioecious flowers, of T.
rugosum of Ait. and Pursh, or rather is the genuine state of that plant. Let it be remarked, that with the
exception of the very doubtful T. ranunculmum of Muhl. in Willd. Enum. and of that plant of dubious genus
T. anemonoides, all the hitherto described species of N. American Thalictra are dioecious; or if otherwise,
in all that have come under my observation, the stamens appear to be abortive. It is singular, too, that in
another genus, Saxifraga, there is a species in N. America, (hereafter to be described,) which varies with
perfect and polygamous flowers, and in which some of the states have clavate filaments to the stamens.
Tab. II. T. Comuti,». Fig. 1 , Portion of a male plant; fig. 2, Portion of a female; fig. 3, Lower leaf;
fig. 4, Pistil; fig. 5, Stamen; fig. 6, Head of pericarps; fig. 7, Single pericarp :—figs. 4, 5, 6, 7, magnified.
5. T. anemonoides ; radice tuberosa, floribus umbellatis, foliis biternatis foliolis cordato-
rotundatis trilobis, floralibus oppositis vel terms, singulo trifoliolato.— Mich. Am. v. 1 . p.
322. Juss. in Ann. du Mus. v. 8. p. 249. t. 21. f . 2. De Cand. Prodr. v. 1. p . 15.—Anemone
thalictroides. Linn. Sp. PI. p. 763. Pursh, FI. Am. v. 2. p. 387. Bigel. FI. Bost.
ed. 2. p. 223. Curtis, in Bot. Mag. t. 866.
fl. Thalictrum caule unifloro, ex eodem puncto foliis quatuor simplicibus instructis.
Gronov. Virg. 62. (Linn.)
Habitus inter Thalictrum et Anemonem. Folia floralia plerumque opposita (nunc terna quaternave ver-
ticillata,) non simplicia, ut dicunt Linnaeus et Cl. Bigelow, sed, ut bene habet De Candolle, “ petiolo ab ipsa
basi tripartito et ideo segmentis petiolulatis, subverticillatis, ovatis, tridentatis (nunc integerrimis, H.) invo-
lucrura constituentibus.” Sepala petaloidea, alba. Stamina pauca. Pericardia 7-11, lineari-oblonga
breviter stipitata, sulcata: Stylus vix ullus: Stigma subsessile, capitatum.
H ab. Canada. Linnceus. Michaux. (/3.) Kahn: but I have never myself received specimens from any
of the British Possessions in North America.—A plant of doubtful genus, agreeing, however, with T. tuberosum
in general habit and fructification.
3. ANEMONE.
Involucrum 3-phyllum a flore distans, foliolis incisis. Calyx petaloideus, 5-15 sepalus.
Petala nulla. DC.
1. A. patens ; molliter sericea, foliis serotinis tripartitis ternatisve, segmentis cuneatis
trifidis incisis, lobis lineari-lanceolatis, involucro lineari-multifido, flore erecto, sepalis
5-6, aristis longis barbatis.—Linn. Sp. PI. p. 759. Gmel. Siber. v. 4. p . 195. De Cand.
Prodr. v. 1. p . 16.—(ß. ochroleuca.) Sims, in Bot. Mag. t. 1994.—Clematis hirsutissima.
Pursh, FI. Am. v. 2. p . 285.—Anemone ludoviciana. Nutt. N. Am. FI. v. 2. p. 26.—
A. Nuttalliana. De Cand. Prodr. v. 1. p. 17. Nutt, in Jaum. o f Acad, o f Nat. Sc. o f
Philad. i 5. p. 158. t. 8. (A. NuttaUii,) excellent Rich, in FranU. 1st. Jmm. ed. 2
App. p. 21.
‘l10 f l l P™™ distric‘ .- -o re S to r e d , in the central limestone tracts from 1st.
There isno°dff 7?'°' 1 I III Mountains. Drummond. Douglas!
There is no difference whatever between this American plant and the A. patens which I possess from the
Russian Empire gathered by Dr. Goldbacb, and from Silesia on the bordersof Poland, by Professor Trevi-
ranns Both are liable to vary in the breadth of the segments of their leaves, and in the colour of their Jw e rs
Mostly, however, these are purple. The pale yellbw-ilowered variety from Siberia, is cultivated in E n Z d !
and the fresh j uice of that kind, Gmelm tells us, is employed by the inhabitants of Irkutsck to cure deLess’
and newly gathered leaves for pain in the head, as vesicatories. The plant affects sandy soils, and its bios!
soms appear among the earliest of the season. The young buds are eaten by the Marmots, inhabitants of
the plains of N. America.-A. HaUeri comes too near to this species. Its flowers I have often gathered in
Switzerland before the leaves have appeared; but since, in both, the flowers continue a long time, they and
form! T , lmes Sllllcred.'n perfection together. I possess specimens from Moscow, in which the
anTshap! k “" * PrGS™t Temal 4oweri «uite dead. -deed, and brown, but perfect in form
B B .A: alPma.[ subsericeo-villosa, foliis longe petiolatis biternatim pinnatifidis, foliolis
laciniatis lacinns lineanbus acutis involucralibus conformibus, flore erecto, sepalis 6
patentibus, aristis longis, barbatis— iiim . Sp. PI. p. 760. Bot. Mag. t. 2007.-1« maior)
A. sulphurea, Linn Mant. p. 78.—A. apiifolia. Willd. Sp. PI. v. 2. p. 9. ‘
H*b. Eastern declivity of the Rocky Mountains, lat. 52« to 55«. Drummond.—Hitherto unnoticed as
a native of America. Mr. Drummond’s specimens have the flowers white, with a purplish tinge at the base
and accord with he var. «. major of De Cand. Stems from six inches to a foot and a half hi «h
ofpencarps very huge. Atom long, very silky. V aeaas
W M Mils tripartitis, lobis cuneatis trifidis crenatisque obtusis, involucrali- 2 ■ B B H H B hH angustioribusque, sepalis 6 ovalibus.-.11 Am. v. I p. 319 De Cand Prodr. v. 1. p. 19. Rich, in FranU, 1st Joum. ed. 2. App.
p. 21.—A. cuneifolia. Juss. Ann. du Mus, v. 3. t. 21. f . 3. Pursh, FI. Am. v. 2. p 386 —
A m ap. 22 {WM H S h b0realiS' ■ I S 3 \stJourn. ed. 2.
w B M m B H | ■ " » * - 1 Rooky Mountains, from Ut.
^ t h e ^
chief d i a r o n « ^ « ^ “^ ^ ^ These, indeed, seem to be the
petaU, especially in a — l °Tof I g P B ” ” 11 11 * « « «ngc at the base of the
i . A. Baldemis; foliis glabratis subcarnosis ternatim partitis segmentis tripartito
laciniatis, lacinns hneanbus obtusis, involucralibus breviter petiolatis confo J b n " pefiofe