1913]  Blake,— Six Weeks’ Botanizing in Vermont,— I 155 
1. O. CINNAMOMEA L. Sp. ii. 1066 (1753). Pinnules rounded or 
acutish, somewhat crowded to subremote.— Newfoundland to Florida, 
west to Illinois and Louisiana.— Including O. cinnamomea f. angusta 
Clute, Fern Bull. xvii. 12 (1909), which as represented in herb. Bos- 
ton Society of Natural History by an authentic frond collected in a 
cedar swamp, Leicester, Vt., 17 July 1909, by D. L. Dutton, appears 
to bea not uncommon state in which the pinnules are somewhat 
revolute and a little remote, and has the appearance of a teratological 
development rather than a nameworthy variation. 
CC. Pinnules and upper part of rachis glandular-pubescent. 
2. Q. CINNAMOMEA var. GLANDULOSA Waters, Fern Bull. x. 21 
(1902). 0. cinnamomeaf. glandulosa Waters, |. c.— In swampy woods, 
Rhode Island, New Jersey, Maryland. 
BB. Some of the pinnules crenulate, serrate, or lobed. 
D. Pinnules not bearing ascidia. 
E. Pinnules serrate, the teeth sharp; middle pinnules of the pinnae 
usually most deeply cut. 
3. O. CINNAMOMEA f. INCISA (Huntington) Gilbert, N. A. Pterid. 
13, 28 (1901); Clute, Fern Bull. xv. 16, with fig. (1907). O. cinna- 
momea incisa Huntington, Fern Bull. vii. 12 (1899).— Seen from New 
Hampshire, New York, Massachusetts, Minnesota, and VERMONT: 
damp woods, Swanton, 25 Aug. 1911, Blake 3159; Mt. Mansfield, 
Underhill, alt. 3670, 11 Aug. 1911, Blake 2733; common in rather 
exposed places, Jay Peak, 17 July 1908, Winslow; in sphagnum bog, 
alt. 1000, near Rutland, 1 July, 1908, Kirk (see Ruopora xi. 28 (1909)). 
— Including O. cinnamomea var. auriculata Hopkins, Am. Fern Journ. 
i. 100, fig. (1911), a development with enlarged basal pinnules as in 
the next, but with “pinnules of entire frond more or less dentate- 
serrate" (no specimens seen). 
EE. Pinnules lobed, with rounded divisions; lobing most conspieu- 
ous toward base of frond, pinnae, and pinnules, the lowest 
pinnules often elongated. 
*4. ©. CINNAMOMEA f. BIPINNATIFIDA Clute, Fern Bull. xv. 17 
(1907). O. cinnamomea bipinnatifida Clute, Fern. Bull. xiv. 45 (1906). 
— Seen from all the New England states except Rhode Island, and 
from Florida (Nash 274); the following from VERMONT: pasture, 
alt. 620, Williston, 31 July 1911, Blake 2404.— Includes f. trifolia 
Clute, Fern Bull. xvii. 12 (1909). 
EEE. Pinnules thin, deltoid to deltoid-oblong, with crenulate 
margin, the lower ones often faintly lobed. 
*5. O. CINNAMOMEA f. latipinnula n. forma, pinnis alternis plerum- 
que lato-oblongis, pinnulis paucis (ca. 10-jugis) alternis oblongo-del- 
toideis crenulatis, 1.5-2 cm. longis, 1 em. latis.— Specimens examined: 
VERMONT: edge of woods, Swanton, 20 Aug. 1911, Blake 2981; Massa- 
CHUSETTS: Great Swamp, Walpole, 7 Sept. 1906, Churchill; dry woods, 
Canton, 7 Oct. 1908, Blake (TYPE no. 239 in my herbarium). 
