Leucodon brachypus


Bryol. Univ. 2: 210. 1827.

Synonyms: Fissidens sciuroides var. vaginans Michaux
Treatment appears in FNA Volume 28. Treatment on page 594. Mentioned on page 595.

Plants medium-sized to large, dull. Stems elongate, loosely curved to straight and rigidly spreading, not julaceous, fragile branchlets absent from distal leaf axils. Branch leaves erect-appressed to secund, plicate, 1.5–2.2 mm; apex acute to acuminate; apical laminal cells smooth abaxially; terminal cell isodiametric to elongate, concolorous to hyaline. Perigonia common. Perichaetia common. Capsule immersed to barely exserted, ovoid to pyriform, sometimes slightly asymmetric, to 2 mm. Spores 44–52 µm.

Phenology: Capsules mature Sep, Nov–Jul.
Habitat: Tree bark, logs, stumps, rock, upland and montane forests
Elevation: low to high elevations (0-2000 m)


V28 932-distribution-map.gif

N.B., N.S., Ala., Ariz., Ark., Ga., Maine, N.H., N.Y., N.C., Ohio, Pa., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.


Leucodon brachypus is easily distinguished from L. julaceus by its longer, plicate leaves and usually immersed or emergent capsules. The species is less common and less widespread than L. julaceus and has a more northern range. The species is distinguished from L. andrewsianus by its terminal laminal cells 22–19 µm rather than 35–60 µm. The commonly present gametangia and sporophytes, absence of fragile axillary branchlets, and relatively short terminal cell on the leaf apices distinguish L. brachypus from the similar L. andrewsianus. In L. brachypus, gametangia, sporophytes, or both are commonly present. The ranges of L. brachypus and L. andrewsianus overlap, and the two species rarely grow intermixed. Leucodon brachypus occurs at sea level in the northern part of its range, but above 300–400 m only in the mountains to the south.

Selected References


Lower Taxa

... more about "Leucodon brachypus"
William D. Reese† +
Bridel +
N.B. +, N.S. +, Ala. +, Ariz. +, Ark. +, Ga. +, Maine +, N.H. +, N.Y. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
low to high elevations (0-2000 m) +
Tree bark, logs, stumps, rock, upland and montane forests +
Capsules mature Sep, Nov–Jul. +
Bryol. Univ. +
Fissidens sciuroides var. vaginans +
Leucodon brachypus +
Leucodon +
species +