OPHIOGLOSSA C^. 



down in vernation ; sterile segment clasping the fertile with its 

 apex overlapping the whole. (Fig. 33.) (B.neglec- 

 tum Wood.) New England, New York, Ohio, and 

 Mt. Peddo, Washington (Suksdorf). 



ft Buds pilose ; sterile segments usually long- 

 stalked ; plant larger .fruiting in autumn. 



5. B. ternatum(Thunb.)Swz. Frond fleshy, 

 common stalk very short ; sterile segment 

 broadly pentagonal or triangular, ternate ; the 

 three primary divisions also stalked, as broad 

 as long, pinnately decompound ; ultimate divi- 

 sions varying from round-reniform to triangu- 

 lar-lanceolate, entire or variously toothed and 

 incised ; fertile segment long-stalked, bi quad- 

 ripinnate. Apex of both segments bent down, 

 with a slight curve inward in vernation. (Fig. 

 34.) (B. australe R. Br., B. lunar ioides Swz., 

 B. fumarioides Willd., B. decomposition Man. 

 and Gale., Osmunda ternata Thunb., Botrypus 

 lunar ioides Michx.) Very variable ; larger 



IG 33 _ er na- 

 forms (6' 17' high), with more compound fruc- tion of B. matri- 



cana-folium A. Br. 



tmcation and with divisions of sterile segment ob- (After Davenport.) 

 long or lanceolate and obtuse or oblique at base, 

 are the var. obliquum Milde ; forms with divi- 

 sions of the sterile segment laciniately cut into 

 narrow teeth are var. dissectum Milde. New 

 England and Canada, westward to California, 

 Washington, British Columbia, and southward 

 to Florida. 



*** Vernation wholly inclined, in the fertile 



segment recurved. 



6. B. lanceolatum (Gmel.) Angs. Plant 

 3' 9' high, fleshy; sterile segment closely 

 sessile at the top of a long common stalk, in 

 the sma nest forms three-lobed, in larger ones 

 broadly triangular, twice pinnatifid, the divi- 



FIG. 34. Vernation , , . . , ., 



oiB.ternatumSwz. sions lanceolate, entire or toothed, all set at an 

 (After Davenport.) ob i ique angle; fertile segment short-stalked, 

 slightly overtopping the sterile, bi tripinnate. Bud smooth; 



