Hyophiladelphus agrarius

(Hedwig) R. H. Zander

Bryologist 98: 372. 1995,.

Basionym: Barbula agraria Hedwig Sp. Musc. Frond., 116. 1801
Treatment appears in FNA Volume 27. Treatment on page 527. Mentioned on page 528, 642.

Stems densely rhizoidiferous. Leaf margins occasionally weakly serrulate near apex, occasionally 2-stratose on margins or medial portion of the lamina, marginal cells rhomboid and thick-walled near apex, proximal laminal cells 20–25 µm wide, 2–4: 1, walls thin. Interior perichaetial leaves ca. 1.5 mm. Seta redbrown, twisted clockwise proximally, often also counterclockwise distally. Theca redbrown, commonly sulcate, peristome teeth with many articulations, twisted 1.5–2 times, proximal membrane 45–100 µm in height, granulate to spiculose, operculum 0.8–1.5 mm, cells twisted counterclockwise. Calyptra smooth, 1.4–2.1 mm. Spores light-brown, weakly papillose.


Phenology: Sporophytes mature through much of the year, but mainly winter (Jan–Feb).
Habitat: Low areas, limestone and masonry walls, shady, moist areas

Distribution

V27 757-distribution-map.gif

Ala., Fla., Ga., S.C., Tex., Mexico, West Indies, Central America (Guatemala), South America (Brazil)

Discussion

Hyophiladelphus agrarius grows as a low crust, often with cyanobacteria. Characters affording immediate recognition are the ovate leaves with distal laminal cells bulging adaxially, two stereid bands in the costa, and the peristome twisted. Curiously, though common in Florida, it is not found in the Atlantic counties of that state according to R. S. Breen (1963).

Selected References

None.

Lower Taxa

None.
... more about "Hyophiladelphus agrarius"
elongate +  and quadrate +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
Richard H. Zander +
(Hedwig) R. H. Zander +
reniform +  and rounded +
papillose +  and smooth +
usually slightly wider +
not differentiated +
Barbula agraria +
obovoid +
cucullate +
0.14 cm1.4 mm <br />0.0014 m <br /> (?) +  and 0.21 cm2.1 mm <br />0.0021 m <br /> (?) +
cleistocarpous +  and stegocarpous +
monoicous +, dioicous +  and sexual +
flat to bulging +
Few (?) +  and Several (?) +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
excurrent +  and percurrent +
broadly channeled +  and deeply concave +
Ala. +, Fla. +, Ga. +, S.C. +, Tex. +, Mexico +, West Indies +, Central America (Guatemala) +  and South America (Brazil) +
differentiated +
multicellular +
Low areas, limestone and masonry walls, shady, moist areas +
1.5 cm15 mm <br />0.015 m <br /> (?) +
yellow +  and orange-red or red +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
spathulate;elliptic;oblong +
0 (?) +  and 1/3 (?) +
usually broadly lanceolate +  and narrowly elliptical +
reduced +
long-conic +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
photosynthetic +
compound +, simple +, hollow +  and solid +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
spiculose +  and twisted +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
1.5-2 times proximal membrane +
Sporophytes mature through much of the year, but mainly winter (Jan–Feb). +
dioicous +, sexual +  and asexual +
enlarged +
straight +
elongate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 +  and 1 +
light-brown +
medium +  and small +
rhizoidiferous +
rounded-triangular +  and rounded-pentagonal +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Barbula subg. Hyophiladelphus +
Hyophiladelphus agrarius +
Hyophiladelphus +
species +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
cylindric;elliptic +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
red +  and yellow +
stemless +  and perigoniate +
brown;blackish green +
plant +, loosely cespitose +  and gregarious +
occasionally smaller than the perichaetiate +