Vermilacinia acicularis

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Vermilacinia acicularis
Scientific classification Red Pencil Icon.png
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Ramalinaceae
Genus: Vermilacinia
Species:
V. acicularis
Binomial name
Vermilacinia acicularis
Spjut (1996)

Vermilacinia acicularis is a fruticose lichen that occurs in the Channel Islands of California. [1] The type specimen was collected from San Clemente Island. Other specimens have been collected from Santa Barbara Island and Anacapa Island. [1]

Contents

Distinguishing features

Vermilacinia acicularis is classified in the subgenus Vermilacinia in which it is distinguished by the rounded outline of the thallus with clumps of basal lobes (or branches). The thallus size varies from 5–10 mm (0.20–0.39 in) in diameter. [1] Basal branches are loosely united and frequently divided dichotomously into similar branches, the ultimate branchlets have tiny isidia-like branchlets, or true isidia, that distinguishes the species from others in the subgenus.

The thallus of Vermilacinia acicularis has a cortex up to 100 μm (0.0039 in) thick. Lichen substances are primarily of the following three terpenes that are characteristic of the subgenus Vermilacinia: an unknown referred to as "T3", (-)-16 α-hydroxykaurane, and zeorin. No accessory substances reported. Reproductive features include pynidia (conidium); apothecia unknown. [1]

Taxonomic history

Vermilacinia acicularis was described in 1996. It has alternatively been treated in the genus Niebla under a broader species concept, N. ceruchoides, without explanation. [2] Niebla differs from Vermilacinia by the cortex differentiated into two layers, [3] by the development of chondroid strands in the medulla, [4] and by the absence of the diterpene (-)-16 α-hydroxykaurane and the triterpene zeorin. [4] Vermilacinia ceruchoides differs from V. acicularis by the absence of isidia, and by the branches arising from a less defined basal area that become shortly bifurcate near apex. The whole thallus sometimes intricately branched throughout. [1]

Etymology

The specific epithet, acicularis, is derived from Latin and means "needle-shaped". [5]

Related Research Articles

Vermilacinia, a genus of lichenized fungi in the family Ramalinaceae, is a yellow-green fruticose type of lichen with about 30 species that grow on rocks, trees, and soil within the fog zone along the Pacific Coast of North America and South America. The genus name refers to the thallus being divided into narrow worm-like (vermis) branches (lacinia);the latter part of the name (lacinia) generally applied in descriptions and taxonomic keys such as exemplified in a key to Sonoran Desert species of Ramalina.

Vermilacinia cedrosensis is a species of pale fruticose lichen that is endemic to Baja California, Mexico.

Vermilacinia ceruchoides is a fruticose lichen found on rock faces of cliffs or boulders, sometimes growing among mosses, usually near the ocean, ranging in distribution from Marin County, California to San Vicente on the northern peninsula of Baja California, and in the Channel Islands.

Vermilacinia laevigata is a fruticose lichen that occurs in the fog zone along the Pacific Coast of the California Floristic Province from Marin County, California to 15 miles south of Misión San Vicente Ferrer in Baja California

Vermilacinia paleoderma is a pale yellow-green fruticose lichen that occurs commonly along the fog zone of the Pacific Coast of Northern Vizcaíno Desert region of Baja Californica and occasionally in the Chaparral Islands of California.

Vermilacinia procera is a fruticose lichen of local occurrences on rocks near the sea along the Pacific Coast from San Francisco California to the Channel Islands, and to Punta Escarpada in Baja California. The species is also reported to occur further south to the Vizcaíno Peninsula and on Cedros Island, but these reports are controversial in view of different interpretations of the species that include V. pumila and V. paleoderma that were not recognized at the time V. procera was described ; for example, a specimen collected on Guadalupe Island by Weber and MCoy (L-3605, COLO that was cited by Phillip Rundel and Peter Bowler in 1994 as belonging to Niebla procera, whereas in a revision of the genus by Richard Spjut in 1996, it was cited as belonging to Vermilacinia paleoderma. Both authorities generally agree to some extent on the description of the species and its geographical range within the California Floristic Province.

Vermilacinia pumila is a whitish-green fruticose lichen that occurs in fog areas along the Pacific Coast and offshore islands of North America. The species epithet pumila refers to the dwarf form of the thallus, in contrast to V. combeoides.

Vermilacinia reptilioderma is a rare fruticose lichen found on the Vizcaíno Peninsula and Cedros Island of Baja California. The epithet, reptilioderma, is in regard to the outer surface of the cortex appearing like the skin of a reptile, especially the brown snake, Pseudechis australis, the color of the thallus cortex often turning brown when stored in a herbarium.

Vermilacinia rigida is a dark green, rare fruticose lichen that occurs in fog areas along the Pacific Coast of Baja California, known only from two locations about 100 km north of Guerrero Negro. The epithet, rigida, is in regard to its stiff thallus branches.

Vermilacinia robusta is an olive green fruticose lichen that occurs on rocks near ocean mist along the foggy Pacific Coast of southern California to northern Baja California and offshore islands. The epithet, robusta, was probably adopted in recognizing a more robust form of V. comboides, originally described as a variety of Ramalina combeoides by R. Heber Howe, Jr. in 1913.

Vermilacinia tuberculata is a fruticose lichen known only from Morro Bay along the Pacific Coast of California The epithet tuberculata is reference to the tuberculate surface of the lichen.

Vermilacinia cephalota is a fruticose lichen usually found on trees, shrubs and wooden fences in the fog regions along the Pacific Coast of North America from southeastern Alaska to the Vizcaíno Peninsula of Baja California.

Vermilacinia cerebra is a fruticose lichen that grows on trees and shrubs in the fog regions along the Pacific Coast of North America from the Channel Islands and mainland California near Los Angeles to southern Baja California, also occurring in South America in the Antofagasta Province of northern Chile. The epithet is in reference to the apical swollen lobes that resemble the cerebrum of the brain.

Vermilacinia corrugata is a fruticose lichen that grows on trees and shrubs in the fog regions along the Pacific Coast of North America from the Channel Islands and San Diego in California to southern Baja California. The epithet is in reference to corrugated cortex of the species.

Vermilacinia flaccescens is a fruticose lichen that grows on cacti and shrubs in the fog regions along the Pacific Coast of South America, Peru, Chile and in the Juan Fernandez Islands The epithet is in reference to the flaccid thallus but some specimens have been interpreted to have rigid branches.

Vermilacinia howei is a fruticose lichen that grows on trees and shrubs in the fog regions along the Pacific Coast of North America in the coastal scrub region of the Channel Islands of California, and around Bahía de San Quintín, Baja California and further south in the Vizcaíno Desert. The epithet is in honor of Reginald Heber Howe, Jr. for his contributions to lichenology, especially acknowledged for providing images of the type (biology) specimens in his revision of the genus Ramalina.

Vermilacinia leopardina is a fruticose lichen usually that grows abundantly on the branches of shrubs in the fog regions along the Pacific Coast of North America, in the Channel Islands and on the mainland of California from Santa Barbara County south to the Vizcaíno Peninsula of Baja California. The species is also reported to occur in Chile, based on a single specimen mounted on a large index card off to one corner with the type (biology) of Usnea tumidula in the center and bottom ; it is possible that the specimen of V. leopardina was from North America and placed on the card for the purpose of making a comparison to the type for Usnea tumidula, which was annotated Ramalina ceruchis var. gracilior Muell.Arg., a name of uncertain status. The epithet, leopardina, is in reference to the black transverse bands and irregularly shaped black spots commonly seen on the thallus branches that obviously imply a similarity to the leopard animal, while also making comparative distinctions to other black banded species: V. tigrina and V. zebrina, obviously to a tiger and zebra, and to V. leonis, obviously a lion, which has no black stripes.

Vermilacinia nylanderi is a fruticose lichen that grows on branches of shrubs in the fog regions along the Pacific Coast of North America in the Channel Islands and in Baja California from near El Rosario south to the Vizcaíno Peninsula The epithet honors William Nylander who published a monograph on the related genus Ramalina in 1870.

Vermilacinia tigrina is a fruticose lichen that grows on branches of shrubs and on earth among cactus and shrubs in the fog regions along the Pacific Coast of North America and South America; in North America found in the Channel Islands and near San Diego, California, and in central and southern Baja California; in South America from Peru to Chile. The epithet is in reference to the irregular black spots or bands on the thallus branches.

Vermilacinia zebrina is a fruticose lichen that grows on bark of trees and shrubs, occasionally on rocks, in the fog regions along the Pacific Coast of North America, from Puget Sound in northern Washington to near El Rosario in Baja California. The epithet, zebrina, is in reference to the black transverse bands on the thallus branches; however, the species is interpreted to include thalli without black bands.

References

  1. 1 2 3 4 5 Spjut, R. W. Niebla and Vermilacinia (Ramalinaceae) from California and Baja California. Sida Miscellany 14
  2. Bowler, P. and J. Marsh. 2004. Niebla. Lichen Flora of the Greater Sonoran Desert 2: 368–380
  3. Bowler, P.A. 1981. Cortical diversity in the Ramalinaceae. Can. J. Bot. 59: 437–453; abstract N. homalea group, on page 448 the other two groups, N. combeoides group and the N. ceruchis group indicated to represent another evolutionary line.
  4. 1 2 Spjut R. W. 1995. Vermilacinia (Ramalinaceae, Lecanorales), a new genus of lichens. In: Flechten Follmann; Contr. Lichen in honor of Gerhard Follmann; F. J. A. Daniels, M. Schulz & J. Peine, eds., Koeltz Scientific Books: Koenigstein, pp. 337-351.
  5. Eggli, Urs; Newton, Leonard E. (2004). Etymological Dictionary of Succulent Plant Names. Berlin, Heidelberg: Springer. p. 1. ISBN   978-3-540-00489-9 . Retrieved 14 November 2018.