Ceratodon purpureus (Hedw.) 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


  • Scientific Name

    Ceratodon purpureus (Hedw.) Brid.

  • Description

    Species Description - Plants up to 2.5 cm high, dark-green, yellow-brown, or reddish. Leaves 1.8-2 mm long; costa percurrent to excurrent. Perichaetial leaves elongate, the inner leaves obtuse or shortly and broadly pointed. Setae 8-30 mm long, dark, purplish-red (or ± yellow to yellow-orange w h e n older); capsules inclined to horizontal, 1.25-2 mm long, ovoid-cylindric, asymmetric, strumose at the base, dark-red to purplish, deeply furrowed when dry; operculum about 0.5 mm long; peristome teeth dark-brown, conspicuously pale-bordered, usually with distinct cross-connections between the forks at base, paler and finely papillose above. Spores 11-15 µm, yellow or greenishyellow, smooth or nearly so.

  • Discussion

    Fig. 76

    C. purpureus (Hedw.) Brid., Bryol. Univ. 1: 480. 1826.

    Dicranum purpureum Hedw., Sp. Muse 136. 1801.

    A weed, thriving even in urban conditions of atmospheric pollution, on sterile and disturbed soil, especially in dry, open places, sometimes also on rock, old wood, and old roofs; Baja California, Chihuahua, Durango, Mexico, Veracruz; also reported from the Distrito Federal and Zacatecas.—Very widely distributed in the Northern Hemisphere, largely replaced in the tropics by the following species.