Compilation
Barbula spiralis

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Name

Identification
Pseudocrossidium replicatum (Taylor) R.H.Zander [family POTTIACEAE ] (stored under name); Barbula spiralis Schimp. ex Muell.Hal. [family POTTIACEAE ] Verified by Zander,R.H.Z., 1977 Barbula replicata Taylor [family POTTIACEAE ] Verified by Zander,R.H.Z., 1977
Related name
  • Barbula replicata
  • Pseudocrossidium replicatum
  • Barbula spiralis

Flora

Entry for Pseudocrossidium replicatum (Taylor) R. H. Zander [family ]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 27,
Names
Pseudocrossidium replicatum (Taylor) R. H. Zander [family ], Phytologia, 44: 206. 1979,
Barbula replicata Taylor [family ], London J. Bot., 5: 49, plate 15, fig. c. 1846
Barbula spiralis Müller Hal. [family ]
Tortula spiralis (Müller Hal.) Mitten [family ]
Treatment Author(s)
Richard H. Zander
Information
Stems to 1.5 cm. Stem leaves ovate-ligulate to ovate-lanceolate, 1–2 mm, distal margins usually twice revolute; apex rounded-obtuse; costa ending in an apiculus or short mucro, rarely long-mucronate or short-awned, adaxial surface of costa at mid leaf concave, with (4–)6 guide cells; distal laminal cells 8–10 µm wide, 1:1. Specialized asexual reproduction absent. [Perichaetial leaves weakly differentiated, elliptical.] Sporophytes not seen.
Altitude range
moderate elevations (900–1600 m);
Distribution
MexicoSouth AmericaAfrica (Kenya).USA Ariz.USA N.Mex.USA Tex.
Discussion
Pseudocrossidium replicatum is distinguishable from P. crinitum by its usually apiculate apex, twice-revolute leaf margins—these enclosing thin-walled cells, and smaller distal laminal cells, these strongly bulging on both sides though this obscured by dense papillae. It is quite similar to Tortula atrovirens, the basis for an erroneous report of that species from Colorado by W. A. Weber (1973), but differs by its crescent-shaped costal section (rounded in the latter species) and thin-walled leaf marginal cells. Pseudocrossidium replicatum is characteristic of the Latin American cordillera and arid Mexico reaching north to the western United States.

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