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Fotos / Sonidos

Observ.

sbenson

Fecha

Octubre 6, 2018 12:13 PM PDT

Descripción

Lobes narrow (<0.5mm wide), solid (not hollow like Hypogymnia), underside black with many pits giving it a honeycomb texture.

Fotos / Sonidos

Observ.

sbenson

Fecha

Febrero 17, 2019 01:36 PM PST

Descripción

Growing on rock (shaded granite road cut, Photo 4), apothecia present and terminal, phyllocladia coralloid, stalks thinly tomentose. Cephalodia visible in Photo 3

Fotos / Sonidos

Observ.

sbenson

Fecha

Febrero 17, 2019 01:35 PM PST

Descripción

Photo 2 shows pseudocyphellae on lower surface, Photo 3 shows patchy pale yellow coloration in upper medulla, Photo 4 shows lobe of lower surface in addition to upper surface with soredia and pseudisidia

Fotos / Sonidos

Observ.

sbenson

Fecha

Noviembre 24, 2017 11:10 AM PST

Descripción

Growing on redwood bark in a grove of old growth redwoods.
Distinguishing features: thallus with few corraloid branchlets (compare with S. tuckermanii), main branches appear dented (look near base), medulla soft/somewhat loose, apothecia common--round, enveloped in thin layer of thallus that splits open to reveal mazaedium inside (photos 3 & 4).
This species was growing with S. tuckermanii--see photo #5 for comparison, S. venerabilis pictured on left.

Fotos / Sonidos

Observ.

sbenson

Fecha

Noviembre 24, 2017 11:09 AM PST

Descripción

Growing on redwood bark in grove of old growth redwood trees.
Distinguishing features: many clusters of delicate, slender coral-like branches; the main branches are smooth (not dented); medulla dense; apothecia, when present, are round and enveloped in a thin layer of thallus that splits open to reveal the mazaedium inside.
This species was growing with S. venerabilis (pictured on left in photo #3) which is distinguished by having almost no clusters of coralloid branches, the main branches are dented, the medulla is loose, and apothecia are common (not as common in S. tuckermanii)

Fotos / Sonidos

Observ.

sbenson

Fecha

Julio 17, 2017 03:51 PM PDT

Descripción

Fruticose lichen with solid stalks that have tiny projections called phyllocladia, and it's a cyanolichen with globular cephalodia nestled among the branches (dark blobs in photo 2). Key characteristics for this species are its tightly compact cushion growth form, grows on rock, the phyllocladia are coral-like and delicate (photo 2), apothecia usually absent, and the branches are sparsely tomentose (photo 3, more than sparse tomentum here).
This genus is more common in arctic and alpine areas. Several species occur in CA but few collections have been made. In CA, S. sterile is known from only a couple of locations in the San Francisco Bay Area.

Fotos / Sonidos

Observ.

sbenson

Fecha

Octubre 8, 2017 06:37 PM PDT

Descripción

Isidia growing out of the soralia are diagnostic for this species (see photo 2), along with a K- reaction. Also note that the soralia are fissural--they emerge with pointed ends (photo 3) vs. tuberculate soralia which start out round.
This species has a relatively compact, bushy growth form for a Bryoria. It grows on bark and occasionally rock/soil in somewhat exposed sites.

Fotos / Sonidos

Observ.

sbenson

Fecha

Julio 17, 2017 09:12 PM PDT

Descripción

Superficially looks like H. imshaugii but key features for H. gracilis are: 1) lobe interior dirty looking compared to the pure white of H. imshaugii, 2) it has cute round holes under the lobe axils, and 3) it can have perpendicular side buds like H. heterophylla.
This species is known mostly from coastal southern CA but there are a couple locations north and east of this observation. It's probably overlooked, so this is a good one to keep an eye our for so we can refine its distribution.

Fotos / Sonidos

Observ.

sbenson

Fecha

Abril 19, 2017 03:51 PM MST

Descripción

Dense rhizines on lower surface, black and often tipped by a little ball, long rhizines can be seen protruding from edge of lichen

Fotos / Sonidos

Qué

Líquenes de Roseta Género Physcia

Observ.

sbenson

Fecha

Octubre 26, 2016 12:11 PM PDT

Descripción

Upper cortex: cells paraplectenchymous
Lower cortex: prosoplectenchymous and not distinct from medulla
Substrate: metamorphic rock outcrop
Habitat: grazed pasture, non-native annual grassland
Chemistry: cortex and medulla K+Y

Fotos / Sonidos

Observ.

sbenson

Fecha

Noviembre 6, 2016 05:23 PM PST

Descripción

Lobe tips pale brn to yellow-brown with subtle mosaic of light colored angular markings; the cortex sometimes cracks along the markings. Isidia round/globular (0.1-0.5 mm diam), soft, easily abraded and then look like soredia. Med K-, KC-, C- . Common on basalt in dry areas.

Similar species = X. verruculifera: also brn, K-, and has soft rounded isidia. This species does not have the subtle markings on the lobe tips and the isidia balls are usually smaller (0.1-0.2 mm diam).

Fotos / Sonidos

Observ.

sbenson

Fecha

Enero 28, 2017 03:25 PM PST

Descripción

Trapeliopsis glaucopholis is a squammulose lichen with radiating lobes; thallus white; apothecia dark in color (often absent), biatorine; spores 10-12 x 5 microns, 8/ascus. Epihymenium brown/gold, K-. Substrate: moss and soil over rock

Note the genus Trapelia differs in that the apothecia are lecanorine

Fotos / Sonidos

Observ.

sbenson

Fecha

Septiembre 2, 2013 11:31 AM PDT

Descripción

This species keys in Wetmore's 1970 monograph on the family Heppiaceae. Squamules with scalloped edges/shallow lobes; thallus brown when dry, olive when wet; attached by umbilicus; apothecia many per squamule, immersed, blk when dry and red when wet; spores 5 x 2.5 microns, 1-celled, 100s/ascus.

Fotos / Sonidos

Observ.

sbenson

Fecha

Enero 28, 2017 12:37 PM PST

Descripción

Squamules/areoles vertically oriented, inflated, and flat-topped. Multiple apothecia per squamule; immersed and constricted making them look more like perithecia; many small, globose spores (100s) per ascus.

Fuentes:: Átomo