OPHIOGLOSSA CEyE. 



71 



Fig. 33.— Vernation of 

 B. lanceolaiuin Angs. 

 (After Davenport.) 



6. B. lanceolatum (S. G. Gmel.) Angs. Plant 3'— 12' high, 

 somewhat fleshy. Leaf closely sessile near the summit of the 

 stem, i' — 2' wide, 3-lobed or broadly trian- 

 gular and 2-pinnatifid, the ultimate segments 

 lanceolate, acute, oblique, entire or dentate ; 

 midvein continuous, with forking veinlets ; 

 sporophyll slightly overtopping the leaf, 

 short-stalked, 2 — 3-pinnate, recurved its 

 whole length with the shorter leaf reclined 

 upon it in vernation. Nova Scotia to Alaska, 

 south to New Jersey, Ohio, Colorado, and 

 Washington. Also in Europe and Asia. 

 June-July. 



* * Leaf rising from near the rootstock. 

 t Vernation wholly straight ; bud smooth ; 

 leaf entire or 2 — d-lobed. 



7. B. simplex E. Hitchcock. Plant 2' — 

 5' high, slender, very variable. Leaf ovate, 

 obovate, or oblong, entire, lobed, or pinnately 

 parted, borne near the base of the stem ; 

 sporophyll a simple or slightly compound 

 spike, sometimes reduced to only a few spo- 

 ranges ; spores large for the genus, minutely 

 tuberculate ; apex of leaf and sporophyll 



FiG.34.— Vernation of erect in vernation. Nova Scotia to Maryland, 



B, simplex Hitchcoclc. ^ ^ ,,, . j y^ t-r . ,-,^ 



(After Davenport.) west to Wyommg and California (?). 



tt Vernation i}iclined ; leaf ample, ternately compound. 

 X Spores maturing in early spring ; leaf sessile or nearly so. 



8. B. biternatum (Lam.) Underw. — Plant 3' — 6' high, bear- 

 ing a nearly sessile, broadly triangular ternately compound leaf, 

 3' — 4' wide, 2' high; middle division slightly larger than the 

 lateral ones and like them nearly bipinnate ; ultimate divisions 

 rather lunate, usually not exceeding 2" — 3" in width, the outer 

 margin crenulate, the lateral margins decurrent into the short 

 branches of the rachis ; sporophyll on a rather stout stalk, 

 bipinnate, with a rather broad rachis ; bud smooth or slightly 

 hairy, the segments nearly erect. {B. lunar ioides Swz., B. 

 fumarioides Willd., B. fuinaria Spreng., Osmunda biternata 

 Lam.) South Carolina to Louisiana, apparently not common. 



