OPHIO GL SSA CE^. 



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, frttiting in autuwn. 



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. decompositum Ma~t. 

 and Gale., Osmunda ternata Thunb., Botrypus 

 lunar ioides Michx.) Very variable ; larger 

 forms (6' 17' high), with more compound fruc- 

 tification and with divisions of sterile segment ob- 



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 

 39' high, fleshy; sterile segment closely 

 sessile at the top of a long common stalk, in 

 the smallest forms three-lobed, in larger ones 

 broadl > r trian gu'ar, twice pinnatifid, the divi- 

 sions lanceolate, entire or toothed, al' set at an 

 ob i ique angle . fertile segment short-stalked. 

 Slightly overtopping the sterile, bi tripinnate. Bud smooth; 



FIG. 34. Vernation 

 (After Davenport.) 



