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Schimper's Ditrichum Moss

Ditrichum schimperi Kuntze 1891

Comments

provided by eFloras
L. E. Anderson and V. S. Bryan (1958) stated that Ditrichum schimperi is not uncommon from Vancouver Island and south through the Coastal Ranges to Yosemite Valley. This is the only Ditrichum species along the west coast of North America with large and roughened papillose spores. Ditrichum pallidum from the eastern and southern United States also has large, roughly papillose spores of similar size, but differs in peristome characters. The peristome of D. schimperi is finely papillose, rather than spinose- or spiculose-papillose, is reduced in size, and is irregularly perforate proximally.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 27: 451, 456, 457 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

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Plants in tufts or gregarious patches, yellowish green. Stems to 0.6 cm, rarely to 1 cm, simple. Leaves crowded, erect-spreading to slightly secund, ± contorted, 3-7 mm, narrow filiform-subulate from an ovate to lanceolate base, lamina 2-stratose distally; margins plane to incurved, 1-stratose proximally, 2-stratose distally in subula, entire or slightly serrulate near the apex; costa broad, percurrent to excurrent, occupying the width of the subula near the apex, ca. 1/4 width of leaf at base, in cross section with an abaxial stereid band and a few adaxial stereids; distal lamina cells short-rectangular, becoming elongate and rectangular proximally, narrower and longer towards the margins; perichaetial leaves with a sheathing base. Specialized asexual reproduction unknown. Sexual condition autoicous; perigonia in small buds just proximal to the perichaetium. Seta yellow, 1-3 cm, erect to flexuose. Capsule erect to inclined, yellowish to yellowish brown, somewhat reddish brown with age, cylindric, 1.5-3 mm, weakly sulcate when dry; operculum short-rostrate, to about 1 mm; annulus narrow, dehiscent; peristome short, to 300 µm, the teeth irregularly perforate or divided proximally, with a narrow basal membrane, finely papillose distally, nodose proximally. Calyptra large, cucullate and twisted. Spores 20-30 µm, roughened, brown.
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: 451, 456, 457 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
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eFloras

Synonym

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Leptotrichum schimperi Lesquereux, Mem. Calif. Acad. Sci. 1: 9. 1868
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: 451, 456, 457 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

Comprehensive Description

provided by North American Flora
Ditrichum schimperi (Lesq.) Paris, Index Bryol. 391. 1895
Leplotrichum Schimperi Lesq. Mem. Calif. Acad. 1: 9. 1868.
Plants gregarious, yellow, glossy; stems short, erect, simple, 3-5 mm. high; leaves crowded,
secund, 3-7 mm. long with a long, slender, smooth, subulate point, the base short; costa broad,
nearly filling the awn, with a broad band of stereid-cells below and one row of ducts above;
apex serrate; margins incurved, entire or faintly serrulate; basal cells oblong, clear, the
marginal and apical ones linear, obscure ; perichaetial leaves with a long, slender, falcate awn.
Autoicous: antheridia in several small buds below the perichaetium: seta pale-yellow, 1-2
cm. long: calyptra large, pale and twisted: capsules erect or inclined, 2-3 mm. long, striped
with brown and slightly furrowed when dry, narrowly ovoid-cylindric with a short stomatose
neck; lid rostrate, the margin serrate; annulus narrow, of 2 rows of cells, faUing with the lid;
peristome short, erect, not twisted, orange-red and papillose ; basal membrane slightly exserted;
teeth slender, irregularly bifid, perforate or split: spores large, 21-27/1 in diameter, brown,
rough, maturing in June.
Type locality: Coast Ranges near Mendocino City, California.
Distribution: On clay soil and roadside banks, from California to Vancouver Island.
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cc-by-nc-sa-3.0
bibliographic citation
Albert LeRoy Andrews, Elizabeth Gertrude Britton, Julia Titus Emerson. 1961. SPHAGNALES-BRYALES; SPHAGNACEAE; ANDREAEACEAE, ARCHIDIACEAE, BRUCHIACEAE, DITRICHACEAE, BRYOXIPHIACEAE, SELIGERIACEAE. North American flora. vol 15(1). New York Botanical Garden, New York, NY
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North American Flora