Acaulon muticum var. rufescens

(A. Jaeger) H. A. Crum

Bryologist 72: 240. 1969,.

Basionyms: Acaulon rufescens Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1868–1869: 77. 1869
Treatment appears in FNA Volume 27. Treatment on page 639. Mentioned on page 638.

Plants yellow to redbrown in nature. Spores variably low papillose-punctulose or smooth.


Phenology: Capsules mature late fall to early spring.
Habitat: Soil, gravel pit, pasture, lawn
Elevation: low to moderate elevations

Distribution

B.C., Ont., Que., Sask., Ariz., Calif., Fla., Ill., La., Md., Mich., Miss., Mo., Nebr., N.J., N.Y., Okla., Oreg., S.C., Tex., Wis., Mexico

Discussion

A specimen of var. rufescens from New Jersey (Austin 51, UBC) is reddish and has small (ca. 20 µm), round, weakly papillose spores; generally, spore size is not a good character. Another specimen, with large (38–40 µm), round, punctulate spores, is piebald with adherent granules similar to the papillae of var. muticum. One specimen placed here (California, Santa Clara County, Stanford University, W. Schofield 5724, Feb. 23, 1955, UBC), is rather immature, has a greenish cast and smooth, elliptic spores about 28-30 µm.

Selected References

None.

Lower Taxa

None.

0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.175 cm1.75 mm <br />0.00175 m <br />) +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
appressed +  and weakly spreading +
Acute (?) +  and Ovate (?) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Richard H. Zander +
(A. Jaeger) H. A. Crum +
rounded +
papillose +  and smooth +
not differentiated +
Acaulon rufescens +
lobed +  and mitrate +
cleistocarpous +
sexual +  and asexual +
vesiculose +  and thick-walled +
Few (?) +  and Several (?) +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
rhomboid +, rarely +, hexagonal +  and subquadrate +
dentate +, entire +  and serrulate +
B.C. +, Ont. +, Que. +, Sask. +, Ariz. +, Calif. +, Fla. +, Ill. +, La. +, Md. +, Mich. +, Miss. +, Mo. +, Nebr. +, N.J. +, N.Y. +, Okla. +, Oreg. +, S.C. +, Tex. +, Wis. +  and Mexico +
low to moderate elevations +
differentiated +
multicellular +
Soil, gravel pit, pasture, lawn +
yellow +  and orange-red or red +
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 +
spathulate +  and ovate +
reduced +
dentate +  and entire +
short-conic;short-rostrate +
photosynthetic +
flattened +  and 2-fid +
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 +
Capsules mature late fall to early spring. +
1 (?) +, 3 (?) +  and 4 (?) +
rectangular +  and not differentiated +
not differentiated +
straight +
elongate +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
2 +  and 1 +
red +  and laminal +
spheric +  and elliptic +
rounded-triangular +  and rounded-pentagonal +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Acaulon muticum var. rufescens +
Acaulon muticum +
variety +
ovoid;cylindric +
yellow distally and red +, orange +, red +  and yellow +
paroicous +, monoicous +  and dioicous +
elliptic +  and globose +
2 cm20 mm <br />0.02 m <br /> (?) +