Molendoa sendtneriana

(Bruch & Schimper) Limpricht

Laubm. Deutschl. 1: 250. 1886,.

Basionym: Anoectangium sendtnerianum Bruch & Schimper Bryol. Europ. 1: 91. 1846
Synonyms: Anoectangium incurvans (Bescherelle) E. B. Bartram Anoectangium obtusifolium (Cardot) Grout Anoectangium sendtnerianum var. tenuinerve (Limpricht) Mönkemeyer Anoectangium tenuinerve
Treatment appears in FNA Volume 27. Treatment on page 563. Mentioned on page 495, 551, 562, 564, 578.

Stems to 2.5 [–7] cm, sclerodermis present. Leaves ovate, ligulate, elliptic or short-lanceolate, (0.3–) 1–2 (–2.5) mm, entire; leaf base usually not differentiated in shape but occasionally widened and ovate; costa ending 1–3 cells before the leaf apex (blunt-leaved plants) or percurrent or short-excurrent as a stout mucro, rounded to semicircular in section at mid leaf, guide cells 2–4; distal laminal cells usually subquadrate, occasionally triangular or transversely elongated, 1: 1–2; often 2-stratose marginally or in patches medially.


Habitat: Limestone, occasionally conglomerate, sandstone, basalt, clay, soil or siliceous rock, cliff faces, gorge walls, boulders, streamsides, seepage and humid places, warm temperate areas to Arctic tundra
Elevation: low to high elevations (100-2000 m)

Distribution

V27 810-distribution-map.gif

Greenland, Alta., B.C., Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Ont., Yukon, Alaska, Ariz., Ark., Colo., Ill., N.Mex., Okla., Tex., Mexico, Central America, South America, Eurasia

Discussion

The perichaetial leaves of Molendoa sendtneriana reach 1.7 mm, little more than half the length of those of M. hornschuchiana. The phenomenal range of variation in leaf length and shape matches that of Dichodontium pellucidum (Dicranaceae). Because M. sendtneriana has the appearance of a Didymodon, it is important to examine the collection carefully for the distinctive lateral perichaetia (terminal in Didymodon). Both M. sendtneriana and Anoectangium aestivum have the distinctive lateral perichaetia, but large plants of the former have two stereid bands, and small plants have a costa ending below the apex and also often have leaves with 2-stratose portions, features that are absent from the latter in the flora area. The most distal leaves of M. sendtneriana are commonly a deep green and constrast strongly with the tan proximal portions of the turf. The lateral perichaetia, when present, will distinguish this species from Hymenostylium recurvirostrum, which grows commonly on the same substrate; when absent, the commonly elongate distal leaf cells in the leaf mid portion and the lack of an adaxial costal epidermis of the latter species (in the flora area) are helpful distinguishing traits. When sterile, Gymnostomum aeruginosum is similar to M. sendtnerianum but has smaller laminal papillae, mostly 3–5 per cell, and smaller leaf cells. Often plants of M. sendtneriana are encrusted with a distinctive black substance distally. Variation in leaf size and shape is substantial (see R. H. Zander 1977); usually the leaf apices of large plants are acute and those of small plants are obtuse.

Selected References

None.

Lower Taxa

None.
... more about "Molendoa sendtneriana"
quadrate +  and elongate +
flat +  and broadly or narrowly channeled +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
differentiated +
Richard H. Zander +
(Bruch & Schimper) Limpricht +
obovoid;spindle-shaped +
rounded +  and crescentlike +
papillose +  and smooth +
usually slightly wider +
elliptic-sheathing +
usually ovate;oblong +
differentiated +
Anoectangium sendtnerianum +
obovoid +
mitrate +  and cucullate +
cleistocarpous +  and stegocarpous +
monoicous +, dioicous +  and sexual +
flat +  and bulging +
short-excurrent +  and percurrent +
2 (?) +  and 4 (?) +
rounded +  and semicircular +
tomentose +  and bare +
excurrent +  and percurrent +
in patches +  and 2-stratose +
elongated;elongated +
in patches +, 2-stratose +, sinuolate +  and entire +
denticulate +  and plane +
rounded-triangular;oval;roundedquadrate;irregular;rounded-triangular;oval;roundedquadrate;irregular +
Greenland +, Alta. +, B.C. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Nunavut +, Ont. +, Yukon +, Alaska +, Ariz. +, Ark. +, Colo. +, Ill. +, N.Mex. +, Okla. +, Tex. +, Mexico +, Central America +, South America +  and Eurasia +
low to high elevations (100-2000 m) +
differentiated +
multicellular +
Limestone, occasionally conglomerate, sandstone, basalt, clay, soil or siliceous rock, cliff faces, gorge walls, boulders, streamsides, seepage and humid places, warm temperate areas to Arctic tundra +
yellow +  and orange-red or red +
yellow +  and yellow-orange +
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 +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
ovate +  and differentiated +
short-lanceolate +, elliptic +  and ovate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dentate +  and entire +
short-excurrent +  and percurrent +
rounded +  and semicircular +
short-conic;short-rostrate +
photosynthetic +
multifid +, 2-fid +  and scablike +
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 +
1 (?) +, 2 (?) +  and 5 (?) +
Laubm. Deutschl. +
straight +
serrulate +  and sheathing +
ovatelanceolate +
2 +  and 1 +
elongate +
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
dioicous +  and sexual +
usually thicker +
Anoectangium incurvans +, Anoectangium obtusifolium +, Anoectangium sendtnerianum var. tenuinerve +  and Anoectangium tenuinerve +
Molendoa sendtneriana +
Molendoa +
species +
ovoid;cylindric +
proximal +
red +  and yellow +
thickened +  and thin +
stemless +  and perigoniate +
tan;brown;dark;light green +
occasionally smaller than the perichaetiate +