Aloina rigida var. rigida

Treatment appears in FNA Volume 27. Treatment on page 617.
Plants to 2.5 mm. Leaves short-lingulate to ligulate, 0.5–2.5 mm, margins entire to irregularly denticulate, differentiated at base, apex cucullate; costa subpercurrent to percurrent, filaments of 3–9 cells, cells cylindric to spheric; cells of leaf base 11–88 µm, medial and distal cells 9–40 µm, papillae none. Sexual condition dioicous. Seta 4.5–17 mm. Capsule urn ovoid-cylindric, 1.7–3.4 mm; operculum conical to subulate, long-rostrate, 1.2–1.9 mm; peristome 1200–1750 µm, strongly twisted. Spores 11–22 µm.

Phenology: Capsules mature Jun–Aug(-Oct).
Habitat: Rocks, banks, clay, sandy or gravelly soil in deserts, plains or conifer forests
Elevation: moderate to high elevations (1000-3000 m)


V27 900-distribution-map.gif

Alta., B.C., N.B., N.S., Nunavut, Ont., Yukon, Colo., Ill., Iowa, Kans., Mont., Nebr., N.Mex., Tex., Mexico (Nuevo León, Querétaro, Zacatecas), South America, Europe, Asia, Africa.


The ovoid-cylindrical capsule with a long peristome and long-rostrate operculum as well as the differentiated basal leaf margins are the distinguishing features of var. rigida. Despite recent reports from California, this species has not been confirmed from that state.

Selected References


Lower Taxa


AuthorClaudio Delgadillo M. +
Authority(Hedwig) Limpricht +
BasionymsBarbula rigida +
DistributionAlta. +, B.C. +, N.B. +, N.S. +, Nunavut +, Ont. +, Yukon +, Colo. +, Ill. +, Iowa +, Kans. +, Mont. +, Nebr. +, N.Mex. +, Tex. +, Mexico (Nuevo León +, Querétaro +, Zacatecas) +, South America +, Europe +, Asia + and Africa. +
Elevationmoderate to high elevations (1000-3000 m) +
HabitatRocks, banks, clay, sandy or gravelly soil in deserts, plains or conifer forests +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorPatricia M. Eckel +
PhenologyCapsules mature Jun–Aug(-Oct). +
Publication titleLaubm. Deutschl. +
ReferenceNone +
Source xml grained fna xml/V27/V27 900.xml +
Taxon familyPottiaceae +
Taxon nameAloina rigida var. rigida +
Taxon parentAloina rigida +
Taxon rankvariety +
VolumeVolume 27 +