Tetrodontium brownianum

(Dickson) Schwägrichen

Sp. Musc. Frond. Suppl. 2(1,2): 102. 1824,.

Synonyms: Georgia browniana (Dickson) Müller Hal. Tetraphis browniana (Dickson) Greville
Treatment appears in FNA Volume 27. Treatment on page 114. Mentioned on page 113.

Plants without flagelliform shoots. Thallose protonematal flaps narrowly linear-lanceolate acute, occasionally with a short mucronate point, margins usually entire, up to 2.5 mm. Leaves with costa weak or sometimes absent, present only in distal leaves. Spores about 10–12 µm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Protonematal flaps narrow, linear, acute, to 2.5 mm, usually entire, sometimes with a short mucronate point; stem leaves acuminate, sharply pointed Tetrodontium brownianum var. brownianum
1 Protonematal flaps ovate-lingulate, less than 0.5 mm, dentate, with a large acute apical cell, often mixed in with linear, mucronate flaps; stem leaves obtuse Tetrodontium brownianum var. ovatum
... more about "Tetrodontium brownianum"
Judith A. Harpel +
(Dickson) Schwägrichen +
autoicous +  and sexual +
oblong-rhomboid +  and rounded-hexagonal +
naked +, plicate +  and smooth +
ovate +  and shortly oblong-cylindric +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
North America +  and Eurasia +
perpendicular +
rectangular +  and rhombic +
ecostate +  and costate +
spreading +, appressed +  and erect +
obtuse +, acuminate +, ovate +, linear +  and lanceolate +
concave +, ovate +  and ovatelanceolate +
appearing +  and splitting +
mucronate +
acute +, linear-lanceolate +  and thallose +
Sp. Musc. Frond. Suppl. +
straight +
papillose +  and smooth +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
flagelliform +
green;yellowish +
spheric +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Georgia browniana +  and Tetraphis browniana +
Tetrodontium brownianum +
Tetrodontium +
species +
multicellular +  and unsegmented +
Single (?) +  and 4 (?) +
triangular +
dark-green +  and brownish green +