Punctelia constantimontium

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Punctelia constantimontium
Scientific classification edit
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Punctelia
Species:
P. constantimontium
Binomial name
Punctelia constantimontium
Sérus. (1983)

Punctelia constantimontium is a species of foliose lichen in the family Parmeliaceae. Its range includes South America, Africa, and Mexico, where it grows on bark and twigs.

Taxonomy[]

The lichen was described as a new species in 1983 by Belgian lichenologist Emmanuël Sérusiaux. The type locality is Little Connemara, Inyanga (in the Eastern Highlands of Zimbabwe) at an altitude of 2,300 m (7,500 ft). The type specimen was collected by botanist . His last name is the Dutch translation of the phrase "of the mountains", and Sérusiaux used the Latinized form montium added to his first name to commemorate him in the naming of this species.[1]

Description[]

The lichen has a large leafy (foliose) blue-grey to ash-grey thallus comprising lobes that are 2–3 mm (0.08–0.12 in) wide. Circular, point-like pseudocyphellae are abundant on the thallus surface. The medulla is white, while the thallus undersurface is black, with abundant black rhizines. Apothecia are rare; if present, they are initially concave, but become flattened with age, and they have numerous pseudophyphellae on the apothecial margin. The ascospores are hyaline, ellipsoid, and measure 14–16 by 10–12 μm. Pycnidia are visible as brown to black dots immersed in the thallus surface; they produce hook-like (unciform) conidia that are 5–7 by 1 μm long.[2]

It contains the secondary compounds atranorin, , and gyrophoric acid. The standard lichen spot test results are K+ (yellow), C−, KC−, P−, and UV− in the upper cortex; in the medulla they are K−, KC+ (rose), C+ (rose), P−, and UV−.[2]

Habitat and distribution[]

In addition to Zimbabwe, Punctelia constantimontium has been recorded from South Africa, and in South America from Argentina, Brazil, and Uruguay.[1] In Brazil, it has been found in the states Mato Grosso do Sul, Mato Grosso, Paraná, Rio Grande do Sul, and Santa Catarina.[3] In 2016, its range was extended to include the Sierra Madre Oriental in northeastern Mexico.[2] It grows on bark and twigs.[1]

References[]

  1. ^ a b c Sérusiaux, Emmanuël (1983). "New data on the lichen genus Punctelia (Parmeliaceae)". Nordic Journal of Botany. 3 (4): 517–520. doi:10.1111/j.1756-1051.1983.tb01461.x.
  2. ^ a b c Egan, R.S.; Lendemer, J. (2016). "Punctelia in Mexico". In Herrera-Campos, Maria; Pérez-Pérez, Rosa Emilia; Nash III, Thomas H. (eds.). Lichens of Mexico. The Parmeliaceae – Keys, distribution and specimen descriptions. Stuttgart: J. Cramer. pp. 453–480. ISBN 978-3-443-58089-6.
  3. ^ Spielmann, Adriano Afonso; Marcelli, Marcelo Pinto (2008). "Punctelia (Parmeliaceae, lichenized Ascomycota) from roadsides and slopes in the Serra Geral of Rio Grande do Sul, Brazil". Biociências. 16 (2): 79–91.
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