Osmunda cinnamomea L.

  • Authority

    Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.

  • Family

    Osmundaceae

  • Scientific Name

    Osmunda cinnamomea L.

  • Description

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    Species Description - Rhizome growing chiefly on surface of ground, often forming tussock-like clumps. Fronds 0.6- 1.5 m long, long-stipitate; sterile blades oblong to lance-elliptic, up to 1 m long, mostly 8-15 cm broad, acuminate at apex, slightly reduced or truncate at base, pinnate-pinnatifid; rhachis woolly-tomentose at first, becoming nearly glabrous at maturity, but a tuft of tomentum persisting at the base of each pinna. Pinnae spreading or obhque, distant or more usually close or somewhat imbricate, narrowly oblong, mostly 1- 2 cm broad, deeply pinnatifid; segments oblong, 3-6 mm broad, more or less rounded at apex and essentially entire, glabrous or minutely and sparsely tomentose and glandular; veins mostly 1-forked near base. Fertile blades normally without chlorophyll, soon withering, 2-pinnate with densely agglomerated linear divisions completely covered by sporangia.

  • Discussion

    Type. Kalm, from Maryland, U.S.A. {LINN 1244.12).

    Syn, Osmunda bipinnata Linnaeus, Sp. pl. 2: 1065. 1753. (Type. Plumier, Tr. Foug., t. 155, based on material from Hispaniola.)

    Anemia bipinnata (Linnaeus) Swartz, Syn. fil. 157, 1806.

    Osmunda imbricata Kunze, Famkrauter 2: 29, /. 772. 1849. (Type. Funck & Schlim 1221, from Merida, Venezuela, LZ, destroyed; Kunze's plate is very good.)

    Osmunda cinnamomea var. imbricata (Kunze) Milde, Monogr. Osmund. 95. 1868.

  • Distribution

    General Distribution. Eastem North America,

    North America| Bermuda South America| Mexico North America| Central America| Paraguay South America| Brazil South America| Bolivia South America| Peru South America| Ecuador South America| Colombia South America| Venezuela South America| Guyana South America| Suriname South America| French Guiana South America|