Philonotis uncinata (Schwägr.) Brid.

  • Authority

    Sharp, Aaron J., et al. 1994. The Moss Flora of Mexico. Part One: Sphagnales to Bryales. Mem. New York Bot. Gard. 69 (1): 1-452.

  • Family

    Bartramiaceae

  • Scientific Name

    Philonotis uncinata (Schwägr.) Brid.

  • Description

    Species Description - Plants small to moderately robust (0.5-3 cm high), in dense to lax, green or yellowish-green tufts, tomentose below, simple or sparingly branched, straight or hooked at the tips. Leaves imbricate and often secund when dry, erect-spreading when moist, 0.5-1.5 mm long, oblong-lanceolate to narrowly triangular-lanceolate, acuminate, acute, or obtuse; margins revolute, serrate nearly to the base, the teeth paired; costa subpercurrent to short-excurrent; upper cells rhomboidal to sublinear, u p to 80 µm long, 4-10 µm wide, usually distinctly papillose at upper ends; basal cells scarcely to distinctly laxer and wider. Dioicous. Setae straight, 1.5-3 cm long; capsules inclined to cernuous, 1.5-2 mm long, ovoid to subglobose, furrowed; operculum low-conic; exostome teeth lanceolate, 350-400 µm long, reddish, faintly papillose below, coarsely papillose near the tips; endostome segments nearly as long as the exostome, keeled, yellowish, distinctly papillose throughout, the cilia ± coherent. Spores ovoid to subreniform, papillose, 20-25 µm.

  • Discussion

    Fig. 425a-c

    P. uncinata (Schwaegr.) Brid., Bryol. Univ. 2: 22.1827.

    Bartramia uncinata Schwaegr., Sp. Muse Suppl. 1(2): 60.1816.

    B. scabrida Schwaegr., Sp. Muse Suppl. 1(2): 57. 1816.

    B. giaucescens Hornsch. in Mart., Fl. Brasil. 1(2): 40. 1840.

    B. berteroana C. Müll., Linnaea 17: 590. 1843.

    B. minuta Tayl., London J. Bot. 6: 335. 1847.

    B. berteroanavar.flaccidaC Müll., Syn. Muse Frond. 1: 485. 1849.

    B. pabstiana C. Müll., Syn. Muse Frond. 1: 486. 1849.

    B. tenella C. Müll., Syn. Muse Frond. 1: 481. 1849.

    B. versifolia Hampe, Ann. Sci. Nat. Bot. V, 3: 371. 1865.

    Philonotis brachyclada Besch., Mem. Soc. Sci. Nat. Cherbourg 16: 203. 1872.

    P. pabstiana (C. Müll.) Jaeg., Ber. Thatigk. St. Gallischen Naturwiss. Ges. 1873-74:83.1875.

    P caespitulosa C. Müll. ex Angstr., Ofvers. Forh. Kongl. Svenska Vetensk.-Akad. 33(4): 17. 1876.

    P. gracillima Angstr., Ofvers. Forh. Kongl. Svenska Vetensk.-Akad. 33(4): 17. 1876.

    Bartramia defecta C. Müll., Linnaea 43: 419. 1882.

    Philonotis nanodendra C. Müll. ex Ren. & Card., Bull. Soc. Roy. Bot. Belgique 31(1): 160. 1892.

    P. glaucescens (Hornsch.) Broth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 21, 3(3): 27. 1897.

    Philonotula oreades C. Müll., Hedwigia 36: 99. 1897.

    Bartramia minutissima C. Müll., Nuovo Giorn. Bot. Ital. II, 4: 43. 1897.

    B. scobinifolia C. Mull., Bull. Herb. Boissier 5: 188. 1897.

    Philonotis riograndensisBroth., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 26, 3(7): 27. 1900.

    P. uncinata var. gracillima (Angstr.) Florsch., Fl. Suriname 6(1): 205. 1964.

    P. uncinata var. giaucescens (Hornsch.) Florsch., Fl. Suriname 6(1): 205. 1964..

    A s the extensive synonymy attests, Philonotis uncinata is a complex of varying expressions. It may be convenient locally to recognize the var. uncinata (with hooked stems and excurrent costae), var. giaucescens (Hornsch.) Florsch. [Fig. 425f] (with straight stems and percurrent costae), and var. gracillima (Angstr.) Florsch. [Fig. 425] (with blunt leaf tips and subpercurrent costae), but within the same populations and even on the same plants can be found leaves conforming to all three categories. The Mexican plants tend to be small and often grow on seasonally dry substrates; in being dioicous they seem somewhat allied to P. sphaericarpa and P. bernoullii, but the costa is never long-excurrent and denticulate as in those species.

  • Distribution

    On moist or wet soil or rocks from near sea level to middle elevations; Baja California Sur, Chihuahua, Chiapas, Colima, Hidalgo, Jalisco, Michoacan, Morelos, Nayarit, Nuevo Leon, Oaxaca, Queretaro, Puebla, Sinaloa, San Luis Potosi, Tabasco, Tamaulipas, Yucatan, Veracruz.—Mexico to Brazil; Kansas and the southeastern United States; West Indies; Africa, Australia, and Oceania.

    Oceania| Africa| West Indies| United States of America North America| Brazil South America| Mexico North America| Central America| Colombia South America| Brazil South America|