FILICES 399 



1. H.^luiiarioldes, Sw. Sterile division of the frond near the 

 base of the stipe, biternately dissected, stipitate. 



B. fumarioides. Willd. Also, B. dissectum, Muhl. $ Fl. Cestr. ed. 



2. p. 587. 



LtJNARIA-LIKE BOTRYCHIUM. Moon-WOrt. 



Sterile portion of the frond about 3 inches long, and 4 inches wide, triangular in 

 the outline, sub-divisions, or leaflets, varying from obliquely lance-ovate to cun- 

 eate-oblong and linear, finely crenate, or incised-dentate, connected with the base 

 of the upright fertile portion by a partial stipe, or petiole, 2 to 3 inches in length . 

 Fertile portion on a scape-like ere ct stipe 6 to 9 in ches high, in a tawny compound 

 ppike 2 to 4 inches in length. 

 Hub. Moist low grounds : frequent. Fr. July, Aug. 



2. B. Tirafiiiicwin, Sw. Sterile division of the frond about 

 the middle of the stipe, ternately divided to the base, sessile. 

 VIRGINIAN BOTRYCHIUM. Rattlesake Fern. 



Somewhat hairy. Sterile portion of the frond 3-parted ; the divisions 4 to 6 

 inches long, broad-ovate, or somewhat deltoid, in their outline, bipinnatifid, green ; 

 pinnae 1 to 3 inches long, deeply pinnatifid, the lobes cuneate-oblong, incised- 

 dentate at apex. Fertile portion on an erect stipe 9 to 18 inches high, in a reddish- 

 tawny compound spike 2 to 5 inches in length. 

 Hob. Rich hilly woodlands : frequent. Fr. June, July. 



524. opmoGL-oss'irui, L. 



[Or. Ophis, a serpent, and Glossa, a tongue; from the form of the spike.] 

 Frond erect and scape-like, bearing a lateral sterile portion in the 

 form of an oblong-ovate entire leaf with finely reticulated immersed 

 veins, and a terminal, simple spike, on which the sporanges are closely 

 packed, and more or less coherent together. 



1. O. vulffiitmii, L. Sterile division sessile near the middle of 

 the stipe, obtuse, shorter than the spike. 

 COMMON OPHIOGLOSSUM. Adder' s-tongue. 



Sterile portion of the frond 1% to 3 inches long, and 1 to 2 inches wide, some- 

 what clasping at base, smooth, light green. Fertile portion on a scape-like erect 

 stipe, 4 to 10 inches hi.jh, in a compressed lance-linear 2-rowed spike 1 to 1% inches 

 in length. Sporanges partially imbedded in the rachis, at first connate, finally 

 distinct, pale tawny. 

 Hab. Moist low grounds ; woods, and thickets : frequent. Fr. Jun e. 



ORDER CXXI. LYCOPODIACEAE. 



Jlum'ilf, evergreens, usually of Moss-like aspect ; stems solid, and often woody, 

 thickly clothed with simple sessile lanceolate or subulate leaves, and bearing the 

 2- to 4-valved sporanges sessile in their axils. 



525. I/rCOPO v DIUM:, L. 



[Gr. Li/\-ox, a Wolf, and P.iux, a foot; from some fancied resemblance.] 

 Sporanges of only one kind, resembling those of Ophioglossum, 

 coriaceous, flattened and usually reniform, 1 -celled, opening by a 

 tran sverse line round the margin, thus 2-valved, discharging the 

 minu te spores in the form of a copious sulphur-colored inflammable 

 powder. Leaves 1-nerved, imbricated or crowded in several ranks. 



