Haplodontium tehamense
Phytologia 87: 26. 2005.
Plants shiny light green, yellow-green, or white-green, light-brown below. Stems 0.5–1 cm, somewhat julaceous, strongly branched. Leaves imbricate when dry, erect to erect-spreading when moist, elliptic to oblong, 0.5–1 mm; margins plane; apex rounded-obtuse to broadly acute, apiculus absent; costa subpercurrent, yellowish; laminal cells 40–80 (–100) × 10–20 µm; distal cells at apex irregularly short-rectangular to subquadrate. Seta redbrown, 0.3–0.7 cm, flexuose. Capsule horizontal to nutant, short and broadly pyriform, 1.2–2.5 mm; operculum convex, umbonate; peristome absent. Spores 10–14 µm, ± smooth.
Phenology: Capsules mature Aug (summer).
Habitat: Crevices of volcanic rock in montane areas
Elevation: high elevations (2200-2600 m)
Discussion
Haplodontium tehamense is a distinctive species, with eperistomate capsules and somewhat julaceous stems. The species is known only from a few locations in Lassen Volcanic National Park.
of conservation concern
Selected References
None.
Lower Taxa
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