. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. i. Ophioglossum vulgatum L. Adder's-tongue. Fig. i. Ophioglossum vulgatum L. Sp. PI. 1062. 1753. Rootstock short, oblique or erect; leaves usually soli- tary, 3'-i6' long, the common stalk usually one-half or more above ground and constituting one-third to two- thirds the length of the plant; sterile blade lanceolate, oblanceolate or spatulate, elliptical, oblo
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. i. Ophioglossum vulgatum L. Adder's-tongue. Fig. i. Ophioglossum vulgatum L. Sp. PI. 1062. 1753. Rootstock short, oblique or erect; leaves usually soli- tary, 3'-i6' long, the common stalk usually one-half or more above ground and constituting one-third to two- thirds the length of the plant; sterile blade lanceolate, oblanceolate or spatulate, elliptical, oblong or ovate, i'-s' long, ¥-2' broad, sessile, obtuse or acutish, the middle areoles long and narrow, the outer ones shorter and hexagonal, with included veins; sporophyl I'-a' long, borne on a stalk 4'-lo' long, solitary, apiculate from the prolongation of the axis. In moist meadows and boggy thickets, Prince Edward Island to Ontario, south to Florida. Also in Europe and Asia. The genus is also called Adder's-fern or -spear. Snake's-tongue. Serpent's-tongue. 2. Ophioglossum Engelmanni Prantl. Engelmann's Adder's-tongue. Fig. 2. Ophioglossum Engelmanni Prantl, Ber. Deuts. Bot. Ges. 1: 351. 1883. Rootstock cylindric, with long brown roots; leaves com- monly 2-5, mostly fertile, z'-g' long, the common stalk often mostly below the ground and usually sheathed by the more or less persistent bases of old leaves; sterile blade elliptic or rarely ovate, i'-3i' long, \'-i' broad, sessile, usually acute, apiculate, with wide oblique areoles containing numerous anastomosing or free veins; sporophyl 6"-i2" long borne on a stalk l'-tf long, apiculate; sporanges 12-27 pairs. In damp, sterile places or on rocks in cedar woods, mainly in the Central States, from Indiana and Virginia to Louisiana, Texas and Arizona. April-Oct. 3. Ophioglossum arenarium E. G. Britton. Sand Adder's-tongue. Fig. 3. O. arenarium E. G. Britton, Bull. Torr. Club, 24: 555. pi j/8. 1897. Rootstock s
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
