. 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. Asplenium montanum Willd. Sp. PI. 5: 342. 1810. Rootstock short, creeping, dark-chaffy at the apex. Stipes tufted, slender, naked, dark brown at the base, green above, 2'~4l' long; blades deltoid-ovate to deltoid- lanceolate, acuminate, rather firm, evergreen, 1-2-pin- nate; lower pinnae largest, deltoid, pinnate or pinnatifid, the lobes of segments ovate or rh
. 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. Asplenium montanum Willd. Sp. PI. 5: 342. 1810. Rootstock short, creeping, dark-chaffy at the apex. Stipes tufted, slender, naked, dark brown at the base, green above, 2'~4l' long; blades deltoid-ovate to deltoid- lanceolate, acuminate, rather firm, evergreen, 1-2-pin- nate; lower pinnae largest, deltoid, pinnate or pinnatifid, the lobes of segments ovate or rhombic-oblong, dentate, often narrowly cuneate; upper pinnae less divided, merely toothed or incised; rachis green, winged toward the apex; veins obscure; sori linear-oblong, short, the lower ones sometimes double, usually abundant, often confluent at maturity and concealing the narrow mem- branous indusia. On dry and moist rocks, Connecticut and New York to Ohio, south to Georgia, Alabama and Arkansas. Ascends to 4500 ft. in North Carolina. June-Aug. 10. Asplenium fontanum (L.) Bernh. Rock Spleenwort. Fig. 67. Polypodium fontanum L. Sp. PI. 1089. 1753. Asplenium fontanum Bernh. Schrad. Journ. Bot. 17991: 314. 1799. ' Rootstock short, ascending, clothed with narrow dark scales at the apex. Stipes tufted, i'-3' long, somewhat blackish at the base, especially on the inner side, usually glabrous; blades linear-lanceolate, broadest above the middle, 2-3-pinnate, 3'-6' long, 6"-i4' wide, acuminate, gradually narrowed at the base, the lower pinnae often greatly reduced; rachis narrowly winged; pinnae 10-15 pairs, deltoid-lanceo- late to ovate, or the lower, ones fan-shaped and flabellately divided, the segments deeply dentate with spinulose teeth; sori short, only 1 to 4 on each segment, rarely confluent; indusia membranous, sub- entire. On rocks, Lycoming Co., Pa., and Springfield, Ohio. One of the rarest ferns of the United States; common in Europe. Summer. Called Smooth Rock-s
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
