* t
6. W . Oregana, Eaton. Very much like tlie last, but with smooth fronds, the fertile
taller than the sterile, and the. indusium reduced to a few moniliform hairs.— Vol. II., t. kxi.,
p. 185. — British Columbia to Lake Superior, Colorado and Arizona.,
2 3 . DIC KSO NIA , L 'H e r i t i e r .
I. D. pilo s iu scu la , Willd. Fronds i to 3 feet long, lanceolate from a broad base, long-
acuminate, delicately herbaceous, hairy and minutely glandular, nearly or quite bi-pinnate with
pinnatifid and cut-toothed rhomboid-ovate segments ; involucres marginal, minute, cuplike. —
Vol. I., t. xliv., p. 339. — New Bnmswick to Alabama, and westward at least to Indiana.
2 4 . C ER A TO P T ER IS , B ro n g n ia r t .
I. C. th a lic tro id e s , Brongn. Plant floating, succulent; sterile fronds from simple to tripinnate
with large deltoid-ovate segments, having finely reticulated veins ; fertile fronds taller,
more compound, the segments long and narrow. — Vol. IL , t. Ixxx., p. 255.
2 5 . TR ICHOMANES , L ., S m ith .
1, T. P e te r s ii, Gray. Fronds 2 to 6 lines long, cuneate-obovate or oblong-lanceolate,
entire or somewhat lobed, narrowed into a slender stalk as long as the frond ; veins forked, arising
from a midvein; involucre solitary, terminal, funnel-form.— Vol. L, t. xxiv., p. 18 3 .— Alabama.
2. T. rad ic ans , Swartz. Frond 4 to 8 inches long, lanceolate or ovate-lanceolate, bi-pin-
natifidwith toothed or lobed divisions; involucres terminal on the lobes, tubular-funnel-form,
slightly two-lipped. — Vol. I., t. xxiv., p. 17 9 .— Kentucky to Alabama.
26. LYCODIUM, S wa rt z .
I. L . pa lma tum, Swartz. Fronds climbing from 2 to 4 feet high, the stalk and rachis
very slender ; pinnæ in pairs on short common petioles ; sterile ones palmately 4-7-lobed, i to 2
inches broad; fertile ones decompound, the ultimate divisions very narrow. — Vol. I., t. i., p. i.
— Massachusetts to Tennessee and Florida.
27. SCH IZÆA , S mith.
I. S . pu siBa , Pursh. Sterile fronds linear, very slender, tortuous, i inch long, i of a line
wide ; fertile ones i to 4 inches high, consisting o f a slender stalk bearing a minute pinnate fertile
appendage at the top. — Vol. I., t. xxiv., p. 185 and IL , p. 275. — New Jersey, Nova Scotia, and
Newfoundland.
2 8 . AN EIMIA, S w a r t z .
1. A . Me x icana , Klotzsch. Sterile fronds 4 to 9 inches long, deltoid-ovate, simply
pinnate with a few large ovate-acuminate pinnæ ; fertile fronds having the two lowest pinnæ converted
into long-stalked panicles of fructification, otherwise like the sterile.— Vol. L, t. xlv.,
p. 99. — Western Texas.
2. A . ad ian tifo lia , Swartz. Sterile fronds 6 to 12 inches long, deltoid-ovate, 2-4-pinnate
with obovate or cuneate often lobed segments; fertile fronds having the two lowest pinnæ
converted into long-stalked panicles, as in the last. — Vol. L, t. xiv., p. 103. — Florida.
29. OSMUNDA, L.
* SteriU.fronds fully bi-pinnale with separate pinnules.
1. O. re g a lis , L. Fronds i to several feet long; the sterile ones bi-pinnate with oval or
oblong-lanceolate pinnules, the fertile like the others, but having the upper pinnæ converted
into a panicle of fructification. — Vol. L, t. xxviii., p. 209. — Newfoundland to Louisiana.
* * Sterile fronds pinnate with deeply pinnatifid pinnæ.
2. O. C layto niaua, L. Fronds 2 to 4 feet long; sterile ones oblong-lanceolate, short-
pointed; pinnæ with numerous ovate-oblong obtuse segments; fertile fronds taller than the
others, and having several of the middle pinnæ contracted and bi-pinnate, devoid of leaf-green
and covered with blackish-green sporangia. — Vol. L , t. xxix., p. 219. — Newfoundland to Lake
Winnipeg, and southward to North Carolina.
3. O. cinnamomea, L. Fronds i to 4 -feet long; sterile ones oblong-lanceolate, long-
pointed; pinnæ with numerous ovate-oblong obtuse segments; fertile fronds usually with no
green tissue, but all the pinnæ contracted and bi-pinnate, and covered with cinnamon-brown
sporangia. — Vol. L, t. xxix., p. 227. — Newfoundland to Wisconsin, and southward to Louisiana
and Florida.
OPHIOGLOSSACExE.
I . BOTRYCHIUM, S w a r t z .
§ I. Eubotrychium. Base o f stalk which encloses the bud closed 0
division more or less fleshy, the cells o f the epidermis straight.
a ll sides. Sterile
* Sterile division o f the fro n d usually placed a t 0
never hairy.
above the middle o f the plant. Fron d
-K- Sterile division once pinnate or pinnatifid, the pinnce never pinnately lobed.
• j j i ' L, Plant 4 to 10 inches high, very fleshy ; sterile division sessile near the
middle o f the plant, oblong or ovate, pinnæ or lobes semilunar from a broadly cuneate base,
the sides concave, the outer margin crenate or even incised. — Vol. L, t. v., p. 29. — From
Colorado and New England northward.
, U ® - Milde. Plant 2 to 7 inches high, very fleshy; sterile division sessile above
the middle of the plant, cordate-ovate, pinnately cleft ; divisions few, often somewhat imbricated
rounded-ovate from a narrow base, entire or slightly lobed. — Vol. L, t. v., p. 37. — Unalaska.
•*- Sterile division in fully developedfronds mostly bi-pinnatifid.
, .,3' m a trio ariæfo lium, Al. Braun. Plant 2 to 12 inches high, moderately fleshy;
sterile division placed high up on the plant, usually distinctly stalked, oblong, ovate or even
de toid, m small forms pinnate with roundish-ovate lobes, in larger plants bi-pinnatifid, the lobes
oblong-ovate and obtuse. — Vol. L, t. xvii., p. i^p. — New England to Lake Superior.
4. B . lan ceo la tum , Angstr. Plant 2 to 10 inches high, scarcely fleshy ; sterile division
mgn up on the plant, sessile, deltoid, once or twice pinnatifid with oblique oblong-lanceolate
acute segments, — Vol. I., t. v., p. 33. — New Brunswick to Colorado ; also in Unalaska.