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54 FERNS OF NORTH AMERICA.
Polypodiuvi montanum, L am a r c k , “ FL Fr. i., p. 2 3 . ”
Cyathea montana. S m it h , in “ M em . Acad. T u r in , v ., p. 4 1 7 . ”
Aspidium montamcm, S w a r t z , in “ Schraders journ. Bot., 18 0 0 , ii., p.
4 2 ;” Syn. Fil., p. 61. — S c i t k u i t r , Krypt. Gew., p. 6 1, t. 63.—
W e d e r & M o h r , Deutschlands Krypt. Gew., p. 38. — VVill-
DENOW, Sp. PL, V ., p. 286.
Cystopteris myrrhidifoiia, N ew m an , Hist. Brit. Ferns, eel. iii., p. 97 .
Polypodium myrrhidifolium, V il l a r s , “ Hist. PL Dauph., iii., p. 851, t. 53.”
Hab. — By streams in shady alpine woods in the Rocky Mountains
o f British America, D rum m o n d , N o . 685. North shore of Lake Su perior,
J. M a c o u n , 1869. Forteau, Labrador, Rev. S. R. B u t l e r , in
1870.— Mountains of Europe, from Scotland and Scandinavia to the
,\ppenines and Carpathians. Very doubtfully North Asiatic.
D e sc r ip t io n : — The long and slender root-stock is very
unlike what we find in the other species of this genus.
The slender stalks are sparingly chaffy with entire ovate
scales, and dark brown at the base, but green and herbaceous
towards the frond. They contain two oval fibro-vascular
bundles. The fronds are very tender and delicate, and are
fully thrice pinnate, — almost quadri-pinnate. The veinlets
generally end at the indentation between two teeth, much
as in C. alpina. The spores are finely muriculate.
This is certainly one of the very rarest of North. American
Ferns.
Mr. Faxon has drawn the fronds from the Labrador specimens, but
supplied the root-stock from a plant from Lake Superior. The details
are a magnified pinnule, a sorus with indusium and a spore.
FERNS OF north AMERICA. 55
P l a t e L I IL— F ig . 13 - 1 7 .
C Y S T O P T E R IS B U L B IF E R A , B ern h a rd i .
Bulblet Cystopteris.
Cysto p t er is b u l b i f e r a :^Root-sto ck short, covered with
fleshy stalk-bases, sparingly chaffy at the apex; stalks clustered,
slender, six to ten inches long; fronds membranaceous,
excessively elongated, tapering from the base to the slender
apex, commonly one to two feet long and three to five
inches broad at the base, bipinnate, often bearing bulblets at
the base of the pinnæ and elsewhere; main rachis wingless;
pinnæ very numerous, ovate-oblong; pinnules oblong, obtuse,
pinnately lobed or toothed, the lower ones distinct, the rest
adnate to the secondary rachis ; sori abundant, placed on the
back of the veinlets near the midveins of the segments ;
indusium very delicate, roundish-truncate, convex, somewhat
glandular.
Cystopteris bulbifera, B e r n h a r d i , in Schraders Neues Journ. f. d. Bot-
anik, i., part i., p. lo, 27. — L in k , "Hort. Berol., ¡¡., p. 129;”
Fil. Hort. Berol., p. 45. — P r e s l , Tent. ' Pterid., p. 9 3 . _ T o r -
E E ¥ , FI. New York, ii., p . 501. — H o o k e r , Sp. Fil., !., p . 199.—
G r a y , Manual, ed. i., p. 62S. — M e t t e n iu s , Fil, Hort. Tips.,
p. 96. — E .a to n , in Chapman’s Flora, p . 594. — M o o r e , Ind.
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