Anoectangium aestivum

(Hedwig) Mitten

J. Linn. Soc., Bot. 12. 175. 1869,.

Basionym: Gymnostomum aestivum Hedwig Sp. Musc. Frond., 32, plate 2, figs. 4–7. 1801
Synonyms: Anoectangium compactum Schwägrichen Anoectangium euchloron (Schwägrichen) Mitten
Treatment appears in FNA Volume 27. Treatment on page 522. Mentioned on page 521, 537, 564, 578.

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. Specialized asexual reproduction absent. Sexual condition dioicous. Capsule 0.5–1 mm, exceeding the theca in length, ovoid, inclined.


Habitat: Forming deep green cushions on calcareous and noncalcareous rock, sandstone walls, rock ledges, exposed moist crevices, wet areas
Elevation: 10-3300 m

Distribution

V27 749-distribution-map.gif

Greenland, B.C., Alaska, Ariz., Colo., Wash., Mexico, West Indies, Central America, South America, Eurasia, Africa, Atlantic Islands, Pacific Islands (Hawaii), Pacific Islands (New Zealand), Australia

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.

Selected References

None.

Lower Taxa

None.
... more about "Anoectangium aestivum"
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
short-triangular +
Richard H. Zander +  and Patricia M. Eckel +
(Hedwig) Mitten +
brownish +  and hyaline +
semicircular +  and ovate +
papillose +  and smooth +
usually slightly wider +
usually ovate;oblong +
Gymnostomum aestivum +
obovoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
cucullate +
0.12 cm1.2 mm <br />0.0012 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellowbrown +  and brown +
cleistocarpous +  and stegocarpous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
dioicous +  and sexual +
superficially flat +  and bulging +
thin;greatly thickened +
vesiculose +  and thin-walled +
Few (?) +, 3 (?) +  and 10 (?) +
tomentose +  and bare +
specialized +
dioicous +, sexual +  and asexual +
elongate;subquadrate +
Greenland +, B.C. +, Alaska +, Ariz. +, Colo. +, Wash. +, Mexico +, West Indies +, Central America +, South America +, Eurasia +, Africa +, Atlantic Islands +, Pacific Islands (Hawaii) +, Pacific Islands (New Zealand) +  and Australia +
10-3300 m +
differentiated +
multicellular +
Forming deep green cushions on calcareous and noncalcareous rock, sandstone walls, rock ledges, exposed moist crevices, wet areas +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellow +  and orange-red or red +
plane +  and ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
denticulate +, crenulate +  and entire +
differentiated +
short-lanceolate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
dentate +  and entire +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
long-rostrate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
photosynthetic +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
J. Linn. Soc., Bot. +
straight +
yellowbrown +
elongate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2 +  and 1 +
yellow +  and yellow-orange +
oval +  and rounded-triangular or pentagonal +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Anoectangium compactum +  and Anoectangium euchloron +
Anoectangium aestivum +
Anoectangium +
species +
ovoid;cylindric +
red +  and yellow +
acuminate +, triangular +  and lanceolate +
stemless +  and perigoniate +
green;yellowbrown distally +
occasionally smaller than the perichaetiate +