. Atlas of the rare vascular plants of Ontario. Rare plants; Botany. Allas of the Rare Vascular Plants of Ontarb/Atlas des plantes vasculaires rares de l'Ontario ASPLENIACEAE Thelypterls slmulata (Davenport) Nieuwl. {Dryoptehs simulata Davenport) Massachusetts fern, bog fern Fougère du Massachusetts JJ^_r^ \ (A \ 1" I '" ' ,1 ) }! K^ r\ \}^'Cr^ \ r W \. '^^y '^ J g ^ â â.^^^ ^ â¢> ,^^ P Spodmens/Spéclmons DAO. MICH, OAC, TRTE OPre 1925 CD 1925-1949 31950-1964 ⢠POSM964. HABITAT: Densely shaded, red maple bog-fringe forest, with the herb layer dominated by cinnamon fern {Osm
. Atlas of the rare vascular plants of Ontario. Rare plants; Botany. Allas of the Rare Vascular Plants of Ontarb/Atlas des plantes vasculaires rares de l'Ontario ASPLENIACEAE Thelypterls slmulata (Davenport) Nieuwl. {Dryoptehs simulata Davenport) Massachusetts fern, bog fern Fougère du Massachusetts JJ^_r^ \ (A \ 1" I '" ' ,1 ) }! K^ r\ \}^'Cr^ \ r W \. '^^y '^ J g ^ â â.^^^ ^ â¢> ,^^ P Spodmens/Spéclmons DAO. MICH, OAC, TRTE OPre 1925 CD 1925-1949 31950-1964 ⢠POSM964. HABITAT: Densely shaded, red maple bog-fringe forest, with the herb layer dominated by cinnamon fern {Osmunda cinnamomea L.). STATUS: Rare in New Brunswick and Quebec. Possibly extirpated in Tennessee; threatened in Vermont and Virginia; rare in Delaware, Maryland, West Virginia, and Wisconsin. NOTES: The characters that best distinguish plants of Thelypteris simulata are: lustrous, resinous glands on the undersurface of the fronds; pinnae that are narrowed to the base and long acuminate at the tip; and lateral veins of the pinnules of both the sterile and fertile fronds that do not fork. Fronds of T. palustris Schott (marsh fern) bear a superficial resemblance to T. simulata , but they lack lustrous, resinous glands beneath; the pinnae are broad- based and broadly pointed at the tip; and the lateral veins of the pinnules of the sterile fronds are mostly forking, whereas those of the fertile fronds are simple or forked. Small, sterile fronds of Osmunda cinnamomea L. (cinnamon fern) may also be confused with T. simulata . The former differs in having tufts of reddish-brown hairs below at the bases of the pinnae, a cobwebby rachis, forked veins in the pinnules, and tufted fronds. Fronds of T. noveboracensis (L.) Nieuwl. (New York fern) are strongly narrowed toward the base, with the lowest pinnae being rudimentary, and are not likely to be confused with T. simulata. HABITAT: Forêt densément ombragée d'érables rouges en bordure de tourbière acide, avec couche
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbotany
