Tritomaria Loeske, Hedwigia. 49: 13. 1909.
Won Shic Hong
Plants ca. 0.5--5 cm ´ 1--4 mm, prostrate to ascending. Stem transverse section with 1--3 cortical cells and 15--25 medullary cells; rhizoids numerous in dense mats, colorless to pale brown. Leaves subtransversely-obliquely inserted, 2--4-lobed, asymmetrical (except T. polita); lobes triangular, unequal, margins entire; cell walls collenchymatous, trigones bulging; oil bodies 3--8 per cell, finely granular, spherical to ovoid; underleaves absent. Sexual condition dioicous. Specialized asexual reproduction by gemmae. Androecia intercalary, antheridial stalk 1--2-seriate, female bracts leaflike, 3--4-lobed, margins entire-dentate, bracteoles usually absent. Perianth cylindrical-ovoid, plicate, mouth entire or ciliate. Capsule oval, walls 3--5-stratose, exterior wall with nodular and interior wall with semiannular bands. Elaters ca. 6--10 m m diam. Spores ca. 10--16 m m.
Species 8 (6 in the flora): North America, Europe, Asia, Africa.
SELECTED REFERENCES
Schuster, R. M. 1969. Tritomaria Schiffn. In: R. M. Schuster. 1966--1993. The Hepaticae and Anthocerotae of North America. New York. Vol. 2, pp. 638--704. Schuster, R. M. 1984. Evolution, Phylogeny and Classification of the Hepaticae. In: R. M. Schuster, ed. 1984. New Manual of Bryology. Vol. 2, pp. 892--1070. Nichinan.
OTHER REFERENCES
Grolle, R. and D. G. Long. 2000. An annotated check-list of the Hepa;ticae and Anthocerotae of Europe and Macaronesia. J. Bryol. 22: 103--140.
Schuster, R.M. 1958. Notes on Nearctic Hepaticae XIII The genus Tritomaria (Lophoziaceae) in Arctic Canada. Canad. Jour. Bot. 36: 269--288.
Schuster, R. M. 1988. The Hepaticae of South Greenland. Nova Hedwigia. Berlin. Vol. 92.
Schuster, R.M. & K. Damsholt. 1974. The Hepaticae of west Greenland from ca. 60° N to 72° N. Copenhagen.
