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19. Seligeriaceae Schimper
Dale H. Vitt
Plants minute and gregarious, or larger, forming compact tufts and cushions, unbranched to rarely 2-3-branched, on rock, acrocarpous. Leaves twisted-spreading to stiffly erect when dry, generally erect-spreading to spreading-recurved, sometimes slightly curved when moist, linear to stoutly subulate from clasping base; margins plane, entire to denticulate; costa single, homogenous in transverse-section, ending near the apex to long-excurrent, distal leaf cells smooth, short; alar cells not differentiated to somewhat enlarged and colored. Seta straight, flexuose or cygneous. Capsule mostly erect, symmetric, cylindric-ovate to turbinate; peristome haplolepideous, of 16 triangular entire teeth, these reduced in some species, or absent.
Genera 4, species ca. 44 (3 genera, 16 species in the flora): widespread in temperate and polar regions.
Sporophytes are necessary for identifying the species of Seligeriaceae.
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1 |
Capsules striate; peristome finely papillose or absent; annulus well-developed; calyptra mitrate |
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3 Brachydontium, p. 327 |
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Capsules smooth; peristome smooth or absent; annulus ill-formed; calyptra cucullate |
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(2) |
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2 (1) |
Alar cells not differentiated or sometimes enlarged; autoicous; calcareous rocks. |
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1 Seligeria, p. 320 |
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Alar cells reddish and inflated; dioicous; acid rocks. |
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2 Blindia, p. 327 |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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