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Bruchiaceae
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Richard H. Zander in Flora of North America (vol. 27)
Plants minute or merely small, gregarious to densely tufted. Stems erect, simple or branching, with a central strand. Leaves mostly lanceolate or subulate, straight or somewhat curved, base oblong to ovate; in several rows; margins plane, entire or serrulate distally; costa single, well developed, subpercurrent to shortly excurrent as a sometimes roughened or denticulate subula, in section poorly differentiated or with 1 row of guide cells and 2 (sub-)stereid bands, adaxial band much reduced; lamina cells smooth or abaxially papillose; basal cells broader, narrower towards the margins, those of basal angles not differentiated or forming a marginal border; distal cells short- to long-rectangular, walls firm. Specialized asexual reproduction not known. Sexual condition autoicous or paroicous [dioicous]; perigonia axillary or on short branches adjacent to perichaetia or basal on the plant; perichaetial leaves usually differentiated, longer and somewhat sheathing. Seta short to elongate, usually yellow or brown; capsules immersed to exerted, cylindric or obovate with a distinct inflated-tapering to elongate neck, erect to curved; cleistocarpous, gymnostomous, or peristomate; annulus, when present, usually of 2-3 rows of larger cells, commonly revoluble; peristome, when present, single, of 16 simple, forked, or perforate teeth; operculum,when present, obliquely long-rostrate. Calyptra cucullate or mitrate. Spores often large, spheric to ovoid or weakly reniform, finely to coarsely papillose, spiculate, reticulate, or pitted. Species of Bruchiaceae commonly occur on soil, often as colonizers. The family was well-characterized by W. R. Buck (1979), who recognized four genera and suggested a transitional position between Dicranaceae and Ditrichaceae. The two genera represented in the flora area are quite different but share the salient well-developed capsule neck.

Bruchia bolanderi
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Bruchia brevifolia
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Bruchia brevipes
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Bruchia carinata
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Bruchia carolinae
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Bruchia curviseta
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Bruchia drummondii
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Bruchia flexuosa
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Bruchia fusca
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Bruchia hallii
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Bruchia ravenelii
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Bruchia texana
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Bruchia vogesiaca
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Sporledera beyrichiana
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Trematodon ambiguus
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Trematodon boasii
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Trematodon brevicollis
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Trematodon latinervis
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Trematodon longicollis
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Trematodon montanus
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NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.