GENUS 2. 



ADDER'S TONGUE FAMILY. 



or decompound free-veined sterile blade and a single long-stalked fertile spike or i-4-pinnate 

 panicle, the sporophyl, with numerous globular distinct sporanges in two rows, sessile or 

 nearly so; spores copious, sulphur yellow. Bud for the following season at the apex of the 

 rootstock, enclosed within the base of the common stalk, either wholly concealed or visible 

 along one side. [Name in allusion to the grape-like arrangement of the sporanges.] 



About 20 species, largely natives of the temperate regions of both hemispheres. Type species : 

 Botrychium Lunaria (L.) Sw. 



Buds of the following season wholly concealed within the base of the common stalk; sterile blade 



more or less fleshy ; cells of the epidermis straight. 



Sporophyl and sterile blade both erect in the bud. i. B. siniple.r. 



Sporophyl or sterile blade, or both, at least slightly bent over in bud. 



Buds glabrous ; sterile blade pinnate (or, in no. 10, sometimes subternate) ; spores maturing 



in early summer. 

 Sterile blade slightly bent over in bud. clasping the nearly erect sporophyl. 



Leaves usually stout, the sterile blade nearly sessile, oblong, with close (often 



imbricate) segments. 2. B. Lunaria. 



Leaves slender, the sterile blade usually stalked, oblong to deltoid, with cuneate 



mostly distant segments. 

 Sterile blade distinctly bent over at the tip in the bud, always pinnately divided ; 



segments 3-4 pairs. 



3. B. onondagense. 



5. B. neglectum, 

 10. B. lanceolatnm. 



Sterile blade with the tip slightly inclined in bud, entire, or with 1-3 pairs of 



smaller segments. 4. B. tenebrosttm* 



Sterile blade and sporophyl bent over in bud. 

 Sterile blade distinctly stalked. 

 Sterile blade closely sessile. 



Buds pilose ; sterile blades subternately divided ; spores maturing in late summer or autumn. 

 Sterile blades membranous in drying ; segments mostly acutish, serrulate to laciniate. 

 Segments mostly acute or acutish, serrulate-dentate. 6. B. obliqunin. 



Segments laciniate, often deeply so. 7. B. dissectum. 



Sterile blades thick, leathery in drying ; segments obtuse, crenate to sinuate. 



Leaves z'-f long ; sterile blade at most 2' broad ; segments few. 8. B. Matricariae. 

 Leaves S'-iS' long; sterile blade 4'-8' broad; segments numerous. 9. B. silaifolinin. 

 Bud of the following season exposed along one side ; sterile blade very thin ; cells of the epi- 

 dermis flexuous. ii. B. z'irgitiiannin. 



_ ---X 



i. Botrychium simplex E. Hitchcock. Hitch- 

 cock's or Little Grape-fern. Fig. 4. 



B, simplex E. Hitchcock, Amer. Journ. Sci. 6: 310. 1823. 



Leaves 2 '-6' long, slender and variable, the common stalk 

 usually about half under ground; sterile blade and sporo- 

 phyl straight in the bud. Sterile blade usually short- 

 stalked, thickish, ovate, obovate or oblong, simple and 

 roundish, or pinnately 3~7-lobed (rarely binate or ternate, 

 the divisions pinnately lobed), the segments cuneate to 

 somewhat lunulate, usually apart, the veins forking from 

 the base; sporophyl long-stalked (often one-half or more 

 the height of the plant), simple or i-2-pinnate. 



In meadows and pastures, Prince Edward Island to Mary- 

 land, California and Oregon. Europe and Asia. May-June. 



2. Botrychium Lunaria (L.) Sw. Moonwort. 

 Moon-fern. Fig. 5. 



Osnniniia Lunaria L. Sp. PI. 1064. 1753. 



B. Lunaria Sw. Schrad. Journ. Bot. 1800- : no. 1801. 



Leaves very fleshy, usually stout, 2'-i2' long, variable, 

 the common stalk nearly all above ground and consti- 

 tuting about one-half the length of the plant, the sterile- 

 blade bent over in the bud only at the apex, clasping 

 the nearly erect sporophyl. Sterile blade nearly sessile, 

 broadly oblong, once pinnately divided into 2 to 8 pairs 

 of lunate subentire, crenate or somewhat incised, often 

 close or imbricate segments, the radiating veins several 

 times forked; sporophyl 2-3-pinnate, paniculate. 



Newfoundland to Alaska, Connecticut, New York, Michi- 

 gan. British Columbia and in the Rocky Mountains to 

 Colorado. Europe and Asia. June-July. 



