Diphyscium mucronifolium

Mitten in F. Dozy and J. H. Molkenboer

in F. Dozy and J. H. Molkenboer, Bryol. Jav.1: 35, plate 26. 1855,

Synonyms: Diphyscium cumberlandianum Diphyscium involutum
Found in FNA Volume 27. Treatment on page 163.
Diph Diphyscium mucronifolium.jpeg
Plants dark green to brownish, somewhat glossy, tightly affixed to substratum. Stems 0.5–1 mm, erect, strongly radiculose. Leaves 0.5–5 mm, and somewhat crisped when dry, apex acute, the most proximal leaves reduced, laminal cells smooth, margins entire. Perichaetial leaves with smooth awn, 9–12 mm, lamina at awn base lacerate but not membranaceous. Capsule narrowly ovoid, 2–3 mm, stomata absent, mature capsules sheathed in penicellate perichaetium, awns extending more than twice the length of the immersed capsule. Spores 9–12 µm.

Phenology: Sporophytes infrequent, capsules mature summer.
Habitat: Always on somewhat shaded humid rock surfaces, especially sandstones, conglomerate, and schist
Elevation: moderate elevations (900-1000 m)

Distribution

Ala., Ga., Ky., N.C., Tenn., Va., Asia (China, India, Japan, Philippines, Sri Lanka).

Discussion

Diphyscium mucronifolium is an example of an east Asian disjunctive species, and is found only as local, small populations.

AuthorWilfred B. Schofield +
Elevationmoderate elevations (900-1000 m) +
HabitatAlways on somewhat shaded humid rock surfaces, especially sandstones, conglomerate, and schist +
IllustratorPatricia M. Eckel +
PhenologySporophytes infrequent, capsules mature summer. +
Referenceharvill1950a +
SynonymDiphyscium cumberlandianum + and Diphyscium involutum +
Taxon nameDiphyscium mucronifolium +
Taxon parentDiphyscium +
Taxon rankspecies +
VolumeVolume 27 +