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Barbula

Barbula
Family: Pottiaceae
Media
not available
  • FNA
  • Resources
Richard H. Zander in Flora of North America (vol. 27)
Plants loosely cespitose or forming cushions, yellowish brown, brown or blackish distally, yellowish brown to reddish brown proximally. Stems short to elongate, to 2(-3.5) cm; hyalodermis rarely present, sclerodermis present, central strand present; axillary hairs short to elongate, all cells almost always hyaline. Leaves appressed incurved to weakly spreading, often contorted or twisted about stem, occasionally catenulate when dry, spreading when moist; ligulate or broadly lanceolate to long-triangular, adaxial surface usually deeply grooved along costa, occasionally broadly concave; base weakly differentiated to broadened and somewhat sheathing, proximal margins sometimes narrowly decurrent; margins usually recurved in proximal 1/2-2/3, occasionally plane throughout, entire or occasionally weakly denticulate near apex; lamina 1-stratose; apex rounded to obtusely acute, usually mucronate, occasionally entire or apiculate; costa percurrent to shortly excurrent as a sharp mucro, occasionally ending a few cells before the apex, adaxial outgrowths absent, adaxial cells elongate, occasionally quadrate to short-rectangular, in 2-3(-5) rows; transverse section ovate to semicircular, adaxial epidermis differentiated, adaxial stereid band usually present, usually small, guide cells 2-4 in 1 layer, hydroid strand occasionally present, abaxial stereid band present, usually strong, semi-lunar in sectional shape, abaxial epidermis usually present but weakly differentiated; basal cells differentiated across leaf or reaching higher medially or occasionally marginally, rectangular, usually little wider than the distal cells, 3-5:1, walls of proximal cells thin to evenly thickened; distal medial cells quadrate, usually 1:1, 1-stratose; papillae hollow or solid, multiplex to 2-fid, 2-3 per lumen, occasionally simple or absent, cell walls thin to evenly thickened, superficially bulging on both free sides. Specialized asexual reproduction by tubers borne on proximal rhizoids or gemmae borne on axillary stalks. Sexual condition dioicous or possibly sometimes rhizautoicous. Perichaetia terminal, interior leaves sometimes strongly sheathing, little differentiated or ovate to long-lanceolate, laminal cells usually rhomboid in proximal 1/2-3/4. Seta 0.5-2.5 cm. Capsule stegocarpous, theca ovate to long-cylindric, annulus weakly differentiated to strong, of 1-3 rows of vesiculose ce

Barbula has been much reduced in size. K. Saito (1975) presented cogent reasons for recognizing Didymodon as distinct. Characters of importance in distinguishing Barbula are: axillary hairs almost always entirely of hyaline cells; leaf adaxially usually deeply grooved along the costa; distal laminal cell papillae rough, knobby, obscuring the lumens, and protuberant along the distal laminal margins; costa usually excurrent as a sharp mucro or an apiculus of one or more clear cells; peristome is long and twisted, and as Saito (1975) pointed out, Barbula has gemmae generally larger than those of Didymodon. The three sections are represented in the flora area: sect. Barbula, including B. unguiculata and B. orizabensis; sect. Convolutae Bruch & Schimper (Streblotrichum P. Beauvois), including B. amplexifolia, B. convoluta, and B. indica; and sect. Hydrogonium (Müller Hal.) K. Saito [Hydrogonium (Müller Hal.) A. Jaeger], including B. bolleana. For many taxa previously long-held in Barbula, see 16. Didymodon.

Species within inventory project: Arizona Flora || << 1 - 50 taxa >>
Barbula acuta
Media resource of Barbula acuta
Map not
Available
Barbula agraria
Media
not available
Map not
Available
Barbula amplexifolia
Media
not available
Map not
Available
Barbula andreaeoides
Media
not available
Map not
Available
Barbula arcuata
Media
not available
Map not
Available
Barbula asperifolia
Media
not available
Map not
Available
Barbula aurea
Media
not available
Map not
Available
Barbula australasiae
Media resource of Barbula australasiae
Map not
Available
Barbula bescherellei
Media
not available
Map not
Available
Barbula bolleana
Media
not available
Map not
Available
Barbula brachyphyllus
Media
not available
Map not
Available
Barbula cancellata
Media
not available
Map not
Available
Barbula chloronotos
Media
not available
Map not
Available
Barbula columbiana
Media
not available
Map not
Available
Barbula convoluta
Media resource of Barbula convoluta
Map not
Available
Barbula coreensis
Media
not available
Map not
Available
Barbula crocea
Media resource of Barbula crocea
Map not
Available
Barbula cruegeri
Media
not available
Map not
Available
Barbula cylindrica
Media
not available
Map not
Available
Barbula ehrenbergii
Media
not available
Map not
Available
Barbula eustegia
Media
not available
Map not
Available
Barbula fallax
Media resource of Barbula fallax
Map not
Available
Barbula ferruginascens
Media
not available
Map not
Available
Barbula haringae
Media
not available
Map not
Available
Barbula icmadophila
Media
not available
Map not
Available
Barbula imshaugii
Media
not available
Map not
Available
Barbula inaequalifolia
Media resource of Barbula inaequalifolia
Map not
Available
Barbula indica
Media resource of Barbula indica
Map not
Available
Barbula johansenii
Media
not available
Map not
Available
Barbula maxima
Media
not available
Map not
Available
Barbula michiganensis
Media resource of Barbula michiganensis
Map not
Available
Barbula mucronifolia
Media
not available
Map not
Available
Barbula mutica
Media
not available
Map not
Available
Barbula nigrescens
Media
not available
Map not
Available
Barbula occidentalis
Media
not available
Map not
Available
Barbula orizabensis
Media
not available
Map not
Available
Barbula perobtusa
Media
not available
Map not
Available
Barbula platyneura
Media
not available
Map not
Available
Barbula reflexa
Media resource of Barbula reflexa
Map not
Available
Barbula rigidula
Media
not available
Map not
Available
Barbula rubiginosa
Media
not available
Map not
Available
Barbula rufofusca
Media
not available
Map not
Available
Barbula schimperianum
Media
not available
Map not
Available
Barbula spiralis
Media resource of Barbula spiralis
Map not
Available
Barbula subandreaeoides
Media
not available
Map not
Available
Barbula subgracilis
Media
not available
Map not
Available
Barbula tortuosa
Media
not available
Map not
Available
Barbula triquetrum
Media
not available
Map not
Available
Barbula unguiculata
Media resource of Barbula unguiculata
Map not
Available
Barbula unquiculata
Media
not available
Map not
Available
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