Cl. III. ACOTYLEDONE®.
Okd. I. FILICES..
T rib. I. Polypodiace®•
1. POLYPODIUM. L.
1. P. vulgare, L .—23. Pot. t. 1149.—Ph.—Rich, App. p. 39.—/3. Americanum; minus,
fronde angustiore, laciniis remotioribus. P. Virginianum, Linn. Sp. PI. p. 1345 (excl.
Syn. Plum. $'c.). Ph.—y. occidentale; frondis laciniis acutis acute serratis. P. vulgare,
Virginianum. Bong. Veg. Sitcha, p. 57.
H a b . p. Canada. Pursh, Mrs Perceval, Mrs Sheppard; to the Saskatchewan and Slave River. Dr
Richardson. Drummond.—y. N. W. Am. On rocks and decayed wood, common near the confluence of
the Columbia with the sea. Douglas. Sitcha. Mertens. [in Herb, nostr.)—The common state of this plant
throughout the United States and in British N. America, is to be smaller than the' European form, with
narrower and more oblong fronds, with lacinite more distant, and the sori nearer the margin. This is no
doubt the P. Virginianum of Linnmus and authors, as far as regards the Virginia plant, on which Linnseus
founded his character :—the synonyms which he has adduced, or at least that of Plumier, belong I think
rather to the following. The Columbian and Sitcha variety is different from any I have seen; yet cannot in
my opinion be distinguished as a species from this, which we know is a very variable Fern. Mertens’ plant
from Sitcha described by Bongard, is identical with the Columbian one.
2. P. intermedium; fronde ovali-lanceolata membranacea pellucida fere ad rachin pin-?
natifida, laciniis oblongis acutiusculis serratis glabris, venulis (3-4) distinctis liberis vel
rarissime sub margine anastomosantibus, soris ovalibus solitaris. Hook, et Arn.Bot. of
Beech. Voy. p. 405. Plum. F il.p. 60. t. 77.
H a b . ^Columbia. Dr Scouler.— On referring to Plumier’s figure above quoted (a. W . Indian Plant), to see
how far it agreed with any N. American Fem-(Linnaeus having referred to it as his P. Virginianum), I find
it agrees so well with this plant, that I have little hesitation in, considering it the same ; and the more so
from observing that the species is also-a native of St Vincent, whence I have received specimens from the
late Mr Guilding.
8. P . (Marginaria) Californicum, Kaulf.—Hook, et Grev. Ic. Fil. t. 56. Hook, et Am.
Bot. of-Beechey’s Voy. p. 161 and 405.
H a b . N. W. America. Moist Rocks, Columbia river. Dr Scouler.
4. P . Phegopteris, L.-^-a. minus; subrigidum, pinnarum infimarum lacinps omnibus sub-
integerrimis, venulis fere omnibus simplicibus, soris densis marginatis, E. Bot. t. 224.
Schkukr, Fil. Tab. 20.—/3. intermedium; tenuius, pinnarum inferiarum laciniis crenato-
lobatis venulisque furcatis, soris submarginalibus.—P. connectile? Mx.— Willd.—Ph.—y.
majus ; tenue, pinnis distantibus inferiarum plurium laciniis remotiusculis elongatis pin-
natifidis, venulis plurimis furcatis.—P. Phegopteris, y. Schkuhr, Fil. t. 20. b.—P. hexa-
gonopterum, Mx. Am. 2. p. 271. Ph.— P. cruciatum, Kaulf. (fide Presl.)
H ab . as. Canada. Lady Dalhousie. Mrs Perceval.— /3. Canada. M rs Perceval; and thence to the
Saskatchewan. Dr Richardson. Drummond. N. W. Am. Columbia River. Douglas. Portage, and near
the sources of the Columbia river. Drummond.—y. Canada. Goldie,—Of the two first varieties that I have
here noticed, I have not the slightest doubt of their belonging to one and the same species j arid with regard
to the third (var. y.), among the larger specimens of /3. which Ihave seen, are some which appear to constitute
quite a connecting link between ». and y. This latter seems to be rare in British America ; more frequent
in the United States, where it is sometimes called P. connectile and sometimes P. hexagonopterum. The
larger the plant, and the more remote the pinnae, the greater the disposition in the fronds’ to becoirie compound,
and the more the veinlets become branched or forked :—then too the decurrent triangular lobe of the
rachis is more developed and more remarkable.
b.P.Dryopteris, L .—23. Bot. #.616. Rich. App. p. 39.—Nephrodium,Mx.—P. calcareum,
Ph.—(3. rigidius. P. calcareum, Sm. E. Bot. t. 1525. Bong. Veg. Sitcha, p. 57.
H a b . Canada. Mrs Perceval, to the Rocky Mountains and to Bear Lake. Dr Richardson, Drummond.—/
3. High Mountains of the Rapids of the Columbia. Douglas.
2. GYMNOGRAMMA. Desv.
1. G. triangularis, Kaulf.—Hook, et Grev. Ic. Fil. #.315. Hook, et Am . Bot. of Beech.
Voy. p. 161 e# 405.
H ab. Columbia. Douglas.—A single specimen-only of this is in the Herbarium of Mr Douglas, mixed up
with other Ferns of the Columbia. It was probably found to the south of that river towards California, a
country which the species is known to inhabit.
3. WOODSIA. Br.
1. W. Ilvensis,-Br. in Linn. Trans, v. 11. p . 173.—-23. Bot. t. 2616. Sw.—Ph. Am. 2.
p. 600. Rich. App. p. 39.—Polypodium, Sw.—Nephrodium rufidulum, Ph. (certe.)
H ab. Canada to Hudson’s Bay, Bear Lake and the Rocky Mountains. Pursh. Goldie. Lady Dalhousie.
Dr Richardson. Douglas. Drummond.
2. W. hyperborea, Br. 1. c. p. 173, cum Ic.—Ph. Am .2.p.600.—Polypodium, Sw.Presl,
E . Bot. t. 2023.
H a b . Canada to the Saskatchewan. Pursh. Dr Richardson. Drummond.
3. W. glabella (B r.); frondibus (lanceolato-linearibus) pinnatis glaberrimis, pinnis
triangularibus pinnatifidis imis dilatatis laciniis euneiformibus, rachi nuda stipite aqua-
mato. (T ab. CCXXXVII.) Br. in Rich. App. p. 39.
H a b . Great Bear Lake. Dr Richardson.—A very distinct species, always retaining the character above
given by Mr Brown.
T ab . CCXXXVII. Fig. 1. Pinna ; ƒ 2. Sorus ; f 3, 4. Capsules ; f. 5. Seeds :—magnified.
4. PHYSEMATIUM. Kaulf.
1. P . obtusum.—Aspidium obtusum, Willd.'—^Schkuhr, Fil. t. 21. and #. 43. b. p.—Ph.