Aloina rigida var. rigida

Treatment appears in FNA Volume 27. Treatment on page 617.
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Illustrator: Patricia M. Eckel
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)


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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 </i>var.<i> rigida. Despite recent reports from California, this species has not been confirmed from that state.



Lower Taxa

No lower taxa listed.