Pseudocyphellaria intricata (Del.) Vainio

Randprikklav

World distribution: The species is widely distributed in tropical and temperate regions (Purvis 1992f, Galloway 1985). It is not known from North America (see Egan 1987). In Europe the species is northwestern (Coppins & James 1979), showing a western British Isles to western Norway disjunct distribution. In Fennoscandia the species is restricted to Norway

Ecology: Results. The substrate (indicated in 15 localities) was more or less moss covered rock, including rock walls (13) and more or less inundated rocks (3), and Populus tremula (1). The habitat (indicated in 11 localities) was broad-leaved woodlands (6) including Corylus groves (1), Ilex shrubs (1), Ulmus forests (1), Pinus forests (1), ravines (1), and coastal rock (4). The sites were sheltered to moderately exposed; recorded aspects were western (4), eastern (2), northern (1), southeastern (1), and northwestern (1). Discussion. In Norway Pseudocyphellaria intricata is a species of more or less moss covered rock in oceanic, more or less sheltered sites, mainly in broad-leaved forests. It seems to avoid direct sun. In the British Isles it also occurs on moss covered trunks and branches on trees and old Calluna stems (Purvis 1992f)

Threats: Results. Recorded threats in extant localities or where its status is uncertain include planting of spruce (1508, 285), building on the site (3546), and road construction (3244). Discussion. The most serious threat is probably planting of spruce. In several localities (e.g. 1507, 287) extensive collecting in the first half of this century may have led to extinction

Status: Twelve old localities were investigated. The species was found at 4, regarded as uncertain in 4, and apparently extinct from 4. In some sites (e.g. 1514, 3546) it was abundant, forming many well-developed thalli. Four new localities were discovered. There are no protected localities

Specimens in other herbaria, litterature, etc.