Leptopterigynandrum austroalpinum

Müller Hal.

Hedwigia 36: 114. 1897.

Illustrated
Treatment appears in FNA Volume 28. Treatment on page 347.

Stems julaceous when dry; pseudoparaphyllia foliose. Leaves 1–1.5 (–2) mm; base slightly decurrent; apex very slender; alar cells in many rows extending up margin; laminal cells 20–26 (–34) × (7–) 10 (–13) µm.


Habitat: Non-calcareous, vertical rock faces, soil in rock crevices
Elevation: moderate elevations

Distribution

V28 540-distribution-map.gif

Alaska, Colo., N.Mex., Mexico (Veracruz), South America (Argentina), South America (Bolivia), South America (Peru), Eurasia, Africa (Lesotho)

Discussion

Leptopterigynandrum austroalpinum resembles species of Pseudoleskeella and grows in similar habitats. However, the leaves are more appressed, never catenulate, and the laminal cells are several times longer than wide. The tiny papillae are difficult to see without an oil immersion lens. In Colorado, this species does not appear to be especially rare, but may easily be mistaken for the common P. tectorum. Revisionary studies are needed to establish the distinctness of the six Asiatic taxa, all of which may well be identical to the one from the Western Hemisphere.

Selected References

None.

Lower Taxa

None.

"straight" is not a number."broad" is not a number.

subulate +  and acuminate +
slender +
William A. Weber +
Müller Hal. +
adherent +  and free +
decurrent +
monopodial +  and branching +
spreading;erect +
flagelliform +
cucullate +
asymmetric-curved +
erect;horizontal +
long-exserted +
oblong;pyriform +
quadrate;oblate-rectangular +
rudimentary +
excurrent +  and percurrent +
specialized +
distinct +
1/3 +  and 1/2 +
autoicous +, dioicous +  and sexual +
Alaska +, Colo. +, N.Mex. +, Mexico (Veracruz) +, South America (Argentina) +, South America (Bolivia) +, South America (Peru) +, Eurasia +  and Africa (Lesotho) +
moderate elevations +
linear-lanceolate +  and lanceolate +
Non-calcareous, vertical rock faces, soil in rock crevices +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
serrulate;serrulate;entire +
slender +
long-rostrate +  and conic +
branched +  and unbranched +
stoloniferous +
peglike +  and linear +
keeled;linear +
curved +  and straight +
elongate +
Illustrated +
asymmetric +  and symmetric +
erect-spreading +
slender +
differentiated +
Leptopterigynandrum austroalpinum +
Leptopterigynandrum +
species +
specialized +
autoicous +, sexual +  and asexual +
thick +  and thin +
brown +  and light green +