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• W2313449309 abstract "During the past year, a population of about 100 plants of Arachniodes simplicior (Mak.) Ohwi was found along nearly 100 m of the bank of a small, unnamed tributary of the Savannah River in North Augusta, South Carolina. The species was identified using Ching's (1934) treatment of Asiatic species of Rumohra Raddi, a genus now correctly designated Arachniodes Blume, as explained by Tindale (1961). The identification was confirmed by the United States National Herbarium. Specimens from the American population are described as follows (see also Figs. 1, 2): Rhizome moderately creeping, commonly 5-8 mm in diameter, densely covered with tan to cinnamon-brown, papery scales, these long triangular with auricularclasping bases, 0.5-2.5 mm wide, 3-8 mm long, the tips one cell wide and 2-4 cells long, the margins entire except for 1-3 trichomes, 3-5 cells long, near scale bases and a few basal teeth formed from outward distensions of two cell end junctures. Stipes commonly 0.5-4 cm apart, 15-46 cm long, 4-6 mm diameter at the base, often equal to or longer than the laminae, sub-terete, flattened on the upper surface and grooved toward the apex, tan at the base, pale green above, aging to a straw-yellow color, somewhat scabrous from small protuberances on which scattered scales are borne, the scales more densely distributed toward the stipe base, 2-12 mm long, and similar to those of the rhizome except more elongate and chocolate-brown, the venation consisting of 2 large and 3 small bundles at the base, reduced to 3 at the apex. Rachis unwinged, pale green, the upper surface grooved, the scales like those of the stipe except smaller. Costae yellow-green, with grooves continuous with those of the rachis, the scales smaller and more abruptly narrowing. Laminae 24-39 cm long, 26-34 cm wide, deltoid-pentagonal, 2-3-pinnate, coriaceous, perennial, the adaxial surfaces glossy dark green with yellow-green streaks along the costae and adjacent bases of pinnules, the abaxial surfaces uniformly pale green and not glossy, the apex gradually acuminate. Pinnae generally 1-pinnate, 3-4 alternate pairs below the terminal pinna, 1-6 cm distant, at 30-45? to the rachis, 8-16 cm long, 2-4 cm wide at the base except the basal pair, 2-pinnate with the base 8-10 cm wide, the petiolules 1-6 mm long, the apices gradually acuminate, the pinnules and venation anadromically arranged on all pinnae. Pinnules, except the lower pairs on the basal pinna pair, 16-22 alternate pairs, asymmetrically ovate-auriculate with an acroscopic basal lobe, 13-22 mm long, 5-10 mm wide, the petiolules narrowly winged, sessile or up to 1 mm long, the apices aristate, the margins with spines up to I mm long, with a few trichomes along the larger veins; basal pinnule pair on the basal pinna pair basiscopically produced with the upper about 1/3-2 the length of the lower, the latter 6-10 cm long, the ultimate segments resembling the pinnules of the 2-pinnate pinnae. Pinnule venation free, semi-dichotomous, not extending to the margins, the first branch arising anadromically. Sori dorsal, globular, arranged in a single row on each side of the pinnule main vein, terminal on smaller lateral veins, somewhat closer to the main vein than the margin. Indusia 0.5-1.0 mm in diameter, orbicular-reniform, attached at a deep sinus with often overlapping lobes, tan to slightly darker brown in the center, glabrous, the margins entire, persisting for about two months before being shed. Sporangia with stalks composed of three rows of" @default.
• W2313449309 created "2016-06-24" @default.
• W2313449309 creator A5034833670 @default.
• W2313449309 date "1981-07-01" @default.
• W2313449309 modified "2023-09-26" @default.
• W2313449309 title "Arachniodes simplicior New to South Carolina and the United States" @default.
• W2313449309 doi "https://doi.org/10.2307/1546727" @default.
• W2313449309 hasPublicationYear "1981" @default.
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