Microbryum davallianum var. conicum

(Schwägrichen) R. H. Zander

Bull. Buffalo Soc. Nat. Sci. 32: 240. 1993,.

Basionym: Gymnostomum conicum Wareham Sp. Musc. Frond. Suppl. 1(1): 26, plate 9. 1811
Synonyms: Pottia starckeana subsp. conica (Schwägrichen) D. P. Chamberlain Pottia texana
Treatment appears in FNA Volume 27. Treatment on page 630.

Capsule narrow-mouthed when dehisced, with usually 2 or more rows of thickened cells below mouth; peristome rudimentary or absent. Spores papillose, 27–34 µm.


Phenology: Capsules mature late winter and spring (Feb–Apr).
Habitat: Soil
Elevation: low elevations

Distribution

V27 927-distribution-map.gif

Calif., Nebr., Okla., Tex., Mexico (Baja California), Europe, sw Asia, w, s Africa, Pacific Islands (New Zealand)

Discussion

The San Marcos, Texas specimen (MICH) of var. conicum has a flaring mouth like that of var. davallianum. Another Texas specimen (Orcutt 5565, CANM, WTU) has a weak peristome (a thin line of proximal membrane).

Selected References

None.

Lower Taxa

None.
elongate +, shortrectangular +  and quadrate +
weakly concave +  and broadly channeled +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
of 1;2 rows +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
Richard H. Zander +
(Schwägrichen) R. H. Zander +
round +  and semicircular +
papillose +  and smooth +
usually slightly wider +
usually ovate;oblong +
not differentiated +
Gymnostomum conicum +
obovoid +
mitrate +  and conic-cucullate +
narrow-mouthed +
cleistocarpous +  and stegocarpous +
cylindrical +
synoicous +, paroicous +, monoicous +, sexual +  and asexual +
vesiculose +  and parenchymatous +
3 (?) +  and 6 (?) +
elongate-rhomboid +  and elongate +
enlarged +
tomentose +  and bare +
percurrent +  and excurrent +
serrulate +  and entire +
rhomboidal;shortrectangular;quadrate;hexagonal +
enlarged +  and small to somewhat +
Calif. +, Nebr. +, Okla. +, Tex. +, Mexico (Baja California) +, Europe +, sw Asia +, w +, s Africa +  and Pacific Islands (New Zealand) +
low elevations +
differentiated +
multicellular +
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 +
occasionally less papillose and somewhat thicker walled +
dentate +  and entire +
papillose +
photosynthetic +
branching +, hollow +  and simple +
1 +  and 6 +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
Capsules mature late winter and spring (Feb–Apr). +
1 (?) +  and 2 (?) +
not differentiated +
Bull. Buffalo Soc. Nat. Sci. +
straight +
elongate +
short;elongate +
2 +  and 1 +
red +  and laminal +
rounded-triangular +  and rounded-pentagonal +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Pottia starckeana subsp. conica +  and Pottia texana +
Microbryum davallianum var. conicum +
Microbryum davallianum +
variety +
ovate;short elliptical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
ovate +, elliptical +  and lanceolate +
yellow distally and red +, orange +, red +  and yellow +
rectangular +
stemless +  and perigoniate +
brown;reddish-brown +
plant +  and gregarious +
occasionally smaller than the perichaetiate +