Pseudoscleropodium purum

(Hedwig) M. Fleischer ex Brotherus in H. G. A. Engler et al.
in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 11: 395. 1925.
Illustrated
Basionym: Hypnum purum Hedwig Sp. Musc. Frond., 253, plate 66, figs. 3 – 6. 1801
Synonyms: Scleropodium purum (Hedwig) Limpricht
Treatment appears in FNA Volume 28. Treatment on page 452. Mentioned on page 431.

Plants in soft carpets or turfs. Stems 2–15 cm, regularly pinnate in protected sites, irregularly branched in mowed lawns, branches 1–3 cm; rhizoids absent. Stem leaves incurved, 2–2.5 mm; margins plane; apiculus abruptly reflexed; costa single; laminal cells 50–80 µm, smooth. Branch leaves 1–2 mm. Sporophytes unknown in North America.


Habitat: Lawns of urban areas, cemeteries, forest edges, discarded lawn clippings
Elevation: low to moderate elevations

Distribution

V28 705-distribution-map.gif

Introduced; St. Pierre and Miquelon, B.C., Nfld. and Labr. (Nfld.), N.S., Maine, Mass., Mich., N.H., N.Y., Oreg., Wash., Europe, introduced also in West Indies (Jamaica), South America, Asia (Japan, Malaysia, Sri Lanka), n Africa, Atlantic Islands (Azores, Canary Islands, Iceland, Madeira, St. Helena, Tristan da Cunha), Indian Ocean Islands (Reunion), Pacific Islands (Hawaii).

Discussion

Pseudoscleropodium purum is considered a troublesome lawn weed on the Pacific coast, leading to a thriving moss-killer industry. The species is tolerant of mowing and two to three months of summer drying, and it flourishes in winter. It is always in anthropogenic habitats, and was probably introduced in packing material for nursery stock, possibly disseminated inadvertently from one lawn to another by professional lawn-care workers. Additional information on this unusual moss has been presented by E. Lawton (1960), N. G. Miller (2000), and Miller and N. Trigoboff (2001).

Selected References

None.

Lower Taxa

None.

... more about "Pseudoscleropodium purum"
Wilfred B. Schofield† +
(Hedwig) M. Fleischer ex Brotherus in H. G. A. Engler et al. +
Hypnum purum +
St. Pierre and Miquelon +, B.C. +, Nfld. and Labr. (Nfld.) +, N.S. +, Maine +, Mass. +, Mich. +, N.H. +, N.Y. +, Oreg. +, Wash. +, Europe +, introduced also in West Indies (Jamaica) +, South America +, Asia (Japan +, Malaysia +, Sri Lanka) +, n Africa +, Atlantic Islands (Azores +, Canary Islands +, Iceland +, Madeira +, St. Helena +, Tristan da Cunha) +, Indian Ocean Islands (Reunion) +  and Pacific Islands (Hawaii). +
low to moderate elevations +
Lawns of urban areas, cemeteries, forest edges, discarded lawn clippings +
in H. G. A. Engler et al., Nat. Pflanzenfam. ed. +
Illustrated +
Scleropodium purum +
Pseudoscleropodium purum +
Pseudoscleropodium +
species +