Non-Shrub or Hair-Like Fruticose Parmelioids on Macrolichens of Alaska

Allocetraria madreporiformis

Mon, 01 Jan 0001 00:00:00 +0000

Allocetraria madreporiformis #

Taxon #

Allocetraria medreporiformis

Organization #

Fruticose Parmelioids

Identification #

Allocetraria madreporiformis is a fruticose lichen which somewhat resembles the Dactylina species but more branched in dichotomies. Thalli greenish yellow, can vary from near cylindrical to a flattened form; rugose surface. Brown apothecia are produced very rarely but the species lacks soredia and isidia (Brodo et al. 2001, CLH).

Substrate #

terricolous in calcareous situations (Spribille et al. 2023)

Dactylina arctica & Dactylina beringica

Mon, 01 Jan 0001 00:00:00 +0000

Dactylina arctica & Dactylina beringica #

Taxon #

Dactylina arctica, Dactylina beringica

Organization #

Fruticose Parmelioids

Identification #

Fruticose, finger-like lichens, hollow or loosely webbed in cross section. Yellow, gold, bright green, with browned bases. Some of the older literature suggest that apothecia are very rare in D. arctica, but in Alaska fertile forms are common in many remote tundra sites. The apothecia of D. beringica have not yet been found.

Dactylina ramulosa

Mon, 01 Jan 0001 00:00:00 +0000

Dactylina ramulosa #

Taxon #

Dactylina ramulosa

Organization #

Fruticose Parmalioids

Identification #

The more branched, knobby, and most abundantly fertile member of the Dactylina genus. With a conspicuous pruina over most specimens. May be somewhat webby in cross section (Brodo et al. 2001).

Substrate #

Terricolous, bryocolous, among heaths

Chemical Tests #

cortex: K-, C-, KC- or KC+ yellow or pink; medulla K-, KC+ red, Pd+ red (CLH) or Pd- (Brodo et al. 2001)