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Image of Pseudocrossidium crinitum Zander 1993
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Pseudocrossidium crinitum Zander 1993

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provided by eFloras
Pseudocrossidium crinitum, when the awn is short, can be distinguished from P. replicatum (forms of which may have strongly mucronate leaf apices) by the large area of differentiated parenchymatous cells on the abaxial lateral surface of the costa on both sides adjacent to the laminal insertion on the costa, easily seen in section at mid leaf and often deep yellow in color, appearing as a row of ocelli; the leaf marginal cells are very thin-walled. This essentially southern species reaches its northern range extension in western United States E. B. Bartram 1924; R. H. Zander 1993). An exceptionally robust collection of P. crinitum from Mexico (Puebla, Azumbilla, Zander 4899, BUF) has two layers of guide cells in the costa, but this is very unusual.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 27: 555, 570, 571 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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eFloras.org
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Description

provided by eFloras
Stems to 1.5 cm. Stem leaves ovate to short-lanceolate, 1.5-1.9 mm including the awn, distal margins strongly recurved to once revolute; apex rounded-obtuse below the awn; costa ending in a short awn, adaxial surface of costa at mid leaf concave, with 4 guide cells; distal laminal cells 12-15 µm wide, 1:1. Specialized asexual reproduction absent. [Perichaetial leaves not differentiated.] Sporophytes not seen.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 27: 555, 570, 571 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Synonym

provided by eFloras
Barbula crinita Schultz, Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur. 11: 226. 1823; B. aurea (E. B. Bartram) R. H. Zander; Pseudocrossidium aureum (E. B. Bartram) R. H. Zander; Tortula aurea E. B. Bartram
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 27: 555, 570, 571 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras