Neckeropsis undulata (Hedw.) Reichardt

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part Two: Orthotrichales to Polytrichales. Mem. New York Bot. Gard. 69 (2)

  • Family

    Neckeraceae

  • Scientific Name

    Neckeropsis undulata (Hedw.) Reichardt

  • Description

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    Species Description - Plants in dense, pale- to yellow-green mats. Stems up to 7 cm long, freely and irregularly branched; branches blunt. Leaves strongly undulate, 2 mm long, oblong-lingulate, truncate to broadly rounded-obtuse; margins entire except at the weakly crenulate apex; upper cells rhombic, evenly thickwalled, becoming longer below the leaf middle. Synoicous. Capsules up to 1.5 mm long, yellow-brown; exostome teeth linear-lanceolate, verruculose; segments verruculose. Spores 23 µm, ± verruculose (nearly smooth). Calyptrae mitrate, hairy.

  • Discussion

    Fig. 552

    N. undulata (Hedw.) Reich., Reise Osterr. Freg. Novara, Bot. 1: 181. 1870.

    Neckera undulata Hedw., Sp. Muse 201. 1801.

    Pilotrichum undulatum (Hedw.) P.-Beauv., Prodr. Aetheog. 83.1805.

    Daitonia undulata (Hedw.) W.-Arn., Mem. Soc. Linn. Paris 5: 295. 1827.

    Distichia undulata (Hedw.) Brid., Bryol. Univ. 2: 787. 1827.

    Eleutera jamaicensis Gmel. ex Stuntz, Bull. Torrey Bot. Club 27:210. 1900.

    Neckera jamaicensis (Gmel. ex Stuntz) Britt., Bryologist 6: 59. 1903.

    Rhystophyllum jamaicense (Gmel. exStuntz) Britt., Bryologist 8: 6. 1905.

    Neckeropsis foveolata (Mitt.) Broth, of Guatemala, Costa Rica, Brazil, and western Africa is, according to Bartram (1949b), inseparable from N. undulata except for broadly clasping perichaetial leaves with acuminate, though scarcely subulate tips, and Wagner (1951) also included the species in N. undulata. Neckerafoveolataxs characterized by its ramenta of slender, green, strap-shaped bracts on the vaginula, internal to the perichaetial leaves. Several Mexican collections with immature sporophytes have perichaetial leaves with relatively short-acuminate tips, but as elsewhere in the family, the perichaetial leaves are not fully differentiated until the capsule reaches maturity. (The variability of perichaetial leaf acumina may also be the source of taxonomic confusion in the Neckera ehrenbergii-chlorocaulis complex.)

  • Distribution

    On trunks, at bases, and branches oftrees, rarely on rocks at 300-1300 malt.; Chiapas, Hidalgo, Oaxaca, Puebla, San Luis Potosi, Tabasco, Tamaulipas, Veracruz.—Mexico; Central and South America; West Indies; Florida and Texas.

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