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742, 363. Didyrnodon. 11.. MUSCI. Pl.cell.fol,
^.,.,^„.,,a . ^. Capsuies inclined.
1. Didymodoji piirpureum. Purple twin-tooth.
Stem, scarcely branched ; leaves lanceolate, pointed,
keeled; edge turned over, not cut; capsule ovate, cylindrical,
oblique, with a slight tubercle, furrowed when dry
lid conical.
Bryum perangiisfis crebrioribus foliis, capitulis erectis, longiusculis pediculise
surciilis annotinis innascentibus, Dillen in RailSyn. 99,41.
Bryuni CeL-ii, Lin. S. P. 1585 , , ; Dickson €it/pt. 3, 7.
*': Mnium purpureum, Lin. S. P. 1575 ;
Wither. Arr. 802.
Dicranum purpureum, Iledie. S. Muse. 136; Engl. Bot. 2262.
Dicranum intermedium, Hedvs. S. Muse. 138.
Bryum bipartitura, Dickson Crypt.; Engl. Bat. 2357.
Bryum strictum, Dickson Crypt. 4, 13.
Bryum tenue, Dickson Crypt. 3,8.
Bryum papillosum, Dickson Crypt, 4, 12.
Dicranum strictum, Engl. But. 2294.
Dicranum Celsii, Iltdw. S. 3Iusc.U9 ; Engl. Bot. 2418.
Trichostomum papillosum, Engl. Bot. 2533.
Red shanks.
On moist banks.
2. Didyrnodon inclinaiutn. Inclined twin-tooth.
Leaves in two rows, awlshape, sheathing at bottom; cap-
sule ovate, inclined ; lid conical.
Didyrnodon inclinatum, Sivartz M. Suec. 28.
Bryum inclinatum, Dickson Crypt, 3, 9.
Swartzia inclinata, J/etZto. C/•]/p^ 2, 74.
Cyuontodium inclinatum, Hedw, S. Muse. 58.
Griramia inclinata, Engl. Bot, 1824.
J On rocky mountains ; perennial ; summer.
b. Capsules upright.
3. Didyrnodon nervosum, Rihbed twi/i-tooth.
Leaves reverse-ovate, main rib thickened above ; tip
short; capsules ovate, upright; lid beaked; beak short,
Grimmia atrovirens, Engl, Bot, 2015,
On dry banks by the sea.
Resembles weiasia lanceolata, gen. 359, sp. 7.
4 . Didyrnodon flexifolium. Bent-leaf twin-tooth.
Stem long; leaves oblong, ovate, bent, deeply serrated
at the tip ; capsules upright, cylindrical ; lid beaked.
Bryum flexifolium, Dickson Crypt, 3, 5.
": Trichostomum flexifolium, EngL Bot, 2490.
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