Pterygoneurum subsessile var. kieneri

Habeeb

Rhodora 51: 128. 1949,.

Treatment appears in FNA Volume 27. Treatment on page 609.

Capsule facultatively cleistocarpous: annulus differentiated but operculum remains attached, spores released through ruptured capsule walls.


Phenology: Capsules mature Jul.
Habitat: Grassland soil
Elevation: moderate elevations (950 m)

Discussion

Variety kieneri has possibly hybrid sporophytes. Two forms with identical gametophytes were present in the type collection, one with typical sporophyte, the other with that of the variety. The operculum is not dehiscent and the capsule bursts irregularly. The sporophyte apparently falls as a unit, breaking off at the base of the seta. The single collection is from Nebraska, Chase County, 12.5 km west of Champion, W. Kiener 10627 (MO).

Selected References

None.

Lower Taxa

None.

"um" is not declared as a valid unit of measurement for this property.

hollow-papillose +  and smooth +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
differentiated +
long-excurrent +  and short-excurrent +
Cucullate (?) +, Obtuse (?) +  and Rounded (?) +
Richard H. Zander +
Habeeb +
serrulate +  and smooth +
denticulate +
round +  and elliptic +
papillose +  and smooth +
usually slightly wider +
not differentiated +
Gymnostomum subsessile +
not lobed +
obovoid +
cleistocarpous +
short-ovoid +
paroicous +, autoicous +, sexual +  and asexual +
thin;weakly thickened +
brown +  and hyaline +
Few (?) +  and Several (?) +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
long-excurrent +
denticulate +, entire +  and plane +
quadrate;shortly rectangular +
moderate elevations (950 m) +
differentiated +
not lobed +
multicellular +
Grassland soil +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellow +  and orange-red or red +
10 +  and 12 +
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 +
rostrate;conic-rostrate +
photosynthetic +
hollow +, solid +  and simple +
2 +  and 3 +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
Capsules mature Jul. +
1 (?) +, 2 (?) +  and 5 (?) +
straight +
elongate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
2 +  and 1 +
orange +, red +, yellow +  and laminal +
rounded-triangular +  and rounded-pentagonal +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Pterygoneurum subsessile var. kieneri +
Pterygoneurum subsessile +
variety +
sulcate +  and macrostomous +
ridged;short-cylindric +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellow distally and red +, orange +, red +  and yellow +
stemless +  and perigoniate +
light-brown;green +
plant +, forming a thin turf +  and gregarious +
occasionally smaller than the perichaetiate +