Crossidium squamiferum var. pottioideum

(Notaris) Mönkemeyer

Laubm. Eur., 315. 1927,.

Basionym: Tortula squamifera var. pottioidea De Notaris Musci Ital., 22. 1862
Synonyms: Crossidium griseum
Treatment appears in FNA Volume 27. Treatment on page 614. Mentioned on page 613.

Leaves with margins recurved to erect and whitish distally, undifferentiated proximally. Seta 5–8 mm. Capsule urn short-cylindric, 1–2.1 mm; operculum 0.6–1.1 mm; peristome short, nearly straight, cribrose, 198–520 µm.

Phenology: Capsule mature May–Aug(-Dec).
Habitat: Banks, sandy soil or rocks along dry washes
Elevation: 1000-1500 m


V27 892-distribution-map.gif

Ariz., Calif., Colo., Nev., Utah, Mexico (Baja California), Europe, Asia, n Africa, Atlantic Islands (Canary Islands).


M. J. Cano et al. (1993) did not recognize var. pottioideum as a distinct taxon. However, the character states given in the key offer good reasons to retain it, despite some intergradation with var. squamiferum.

Selected References


Lower Taxa

Claudio Delgadillo M. +
(Notaris) Mönkemeyer +
Tortula squamifera var. pottioidea +
Ariz. +, Calif. +, Colo. +, Nev. +, Utah +, Mexico (Baja California) +, Europe +, Asia +, n Africa +  and Atlantic Islands (Canary Islands). +
1000-1500 m +
Banks, sandy soil or rocks along dry washes +
Capsule mature May–Aug(-Dec). +
Laubm. Eur., +
Crossidium griseum +
Crossidium squamiferum var. pottioideum +
Crossidium squamiferum +
variety +