No Taxonomic Notes.

No Description.

Catalog Notes: Compared to Syntrichia ruralis (also a large moss) and Syntrichia norvegica, the leaves of Syntrichia princeps are not tapered, rather under a cover slip they are pinched in at about one half the length of the leaf and then distally obovate. Syntrichia laevipila is also pinched in, but it has less recurved margins and a yellow-brown costa abaxially in contrast to the strongly recurved margins and red-brown costa of Syntrichia princeps. The specimens that key to Syntrichia princeps can be separated into two piles, large-bodied and small-bodied, a distinction that deserves further study. Lena Coleman

Vouchers: Fresno Co.: Horseshoe Bend along Highway 180, South Fork Kings River, Sequoia National Forest, Shevock & York 12324; Lake Co.: Clear Lake State Park, Norris 47718; Orange Co.: Upper Trabuco Canyon, Santa Ana Mountains, Cleveland National Forest, Shevock 3989 & 3993; Placer Co.: about 1 mile below Drum Powerhouse, Norris 82001; San Mateo Co.: Flume Trail near Boulder Creek Bridge just north of Woodside, Whittemore 4406 (UC).

Literature: Kellman 2003; Shevock and Toren 2001. As Barbula muelleri Lesquereux 1868; Sullivant 1856; Watson 1880. As Tortula princeps Bourell 1981; Bradshaw 1926; Cooke 1941; Flowers 1973; Harpel 1980a; Harthill et al. 1979; Holmberg 1969; Koch 1950a, 1951e, 1958; Koch and Ikenberry 1954; Lawton 1971; Long 1978; McCleary 1972; McGrew 1976; Mishler 1978; Showers 1982; Sigal 1975; Spjut 1971; Steere et al. 1954; Strid 1974; Thomson and Ketchledge 1958; Toren 1977; Whittemore and Sommers 1999; Yurky 1990, 1995.

Illustration References: Malcolm et al. 2009 p. 148; Flowers 1973; Lawton 1971; Sharp et al. 1994; Smith 1978.

Elevation by latitude plot for Syntrichia princeps
   in California