Flora of North America species comparison

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Anoectangium aestivum

anoectangium moss, summer beardless moss, summer-moss
Leaves

commonly distant and exposing the stem; short-lanceolate to ligulate, (0.4–)1–1.5(–1.8) mm;

apex narrowly to broadly acute, apiculus short-triangular;

margins 1-stratose;

costa percurrent in distal leaves, ending in a clear, sharp cell.
Sexual condition

dioicous.
Capsule

0.5–1 mm, exceeding the theca in length, ovoid, inclined.
Specialized

asexual reproduction absent.

Anoectangium aestivum
Habitat Forming deep green cushions on calcareous and noncalcareous rock, sandstone walls, rock ledges, exposed moist crevices, wet areas
Elevation 10-3300 m [30-10800 ft]
Distribution
from FNA
AK; AZ; CO; WA; BC; Mexico; Central America; South America; Greenland; West Indies; Eurasia; Africa; Atlantic Islands; Pacific Islands (Hawaii, New Zealand); Australia
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Discussion

Plants of Anoectangium aestivum often exhibit a comal tuft, and have leaves with multifid or occasionally 2-fid papillae, these dense and obscuring the cell lumens. Specimens from Massachusetts identified as this species are Hymenostylium recurvirostrum. Sporophytes are rare in the flora area. Arizona specimens with blunt leaves have been named A. euchloron, representing a morphologically somewhat intergrading, wide-ranging tropical variant.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 27, p. 522.
Parent taxa Pottiaceae > subfam. Barbuloideae > Anoectangium
Sibling taxa
A. handelii, A. stracheyanum
Synonyms Gymnostomum aestivum, A. compactum, A. euchloron
Name authority (Hedwig) Mitten: J. Linn. Soc., Bot. 12. 175. (1869)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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