Meniscium arcanum (Maxon & C.V.Morton) Pic.Serm., Webbia

Smith, Alan R. & Kessler, Michael, 2017, Prodromus of a fern flora for Bolivia. XXX. Thelypteridaceae, Phytotaxa 331 (1), pp. 1-34 : 27

publication ID	https://doi.org/ 10.11646/phytotaxa.331.1.1
persistent identifier	https://treatment.plazi.org/id/03C287EC-FFFD-F80F-6CFE-F957F792F795
treatment provided by	Felipe
scientific name	Meniscium arcanum (Maxon & C.V.Morton) Pic.Serm., Webbia
status

Treatment

Meniscium arcanum (Maxon & C.V.Morton) Pic.Serm., Webbia View in CoL 23: 180. 1968.

= Thelypteris arcana (Maxon & C.V.Morton) C.V.Morton, Contr. U.S. Natl. Herb. 38: 42. 1967.

Range: — Colombia to Bolivia (LP), eastern Brazil.

Ecology: — Rare, known from a single Bolivian collection: Sperling et al. 5518, GH, MO, US ); terrestrial in humid forests; 850 m.

Notes: —Unique in Bolivia in having the receptacles or sporangial stalks with tubular yellow or orange glands; pinnae 2.5–5.5 cm wide; secondary veins nearly straight; and areoles 7–10-seriate. Meniscium andreanum Sodiro , from Honduras to Peru, may occur in Bolivia (see discussion under M. ensiforme ).

A Bolivian specimen (Kessler 11197, UC), previously determined as Meniscium lingulatum (C.Chr.) Pic.Serm. (= Thelypteris lingulata (C.Chr.) C.V.Morton ), a species ranging from Nicaragua to Peru, has been redetermined as M. arcanum by Fernandes (2015).