Nephroma arcticum
(L.) Torss.
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Family:
Nephromataceae
[
Lichen arcticus
L.,
more
Nephromium arcticum
(L.) Hav.,
Opisteria antarctica
(Wulfen) Vain.,
Opisteria antarctica var. antarctica
(Wulfen) Vain.,
Opisteria antarctica var. lobuligera
(Müll. Arg.) Räsänen,
Opisteria antarctica var. normalis
(Vain.) Räsänen,
Opisteria arctica
(L.) Vain.,
Parmelia arctica
(L.) Linds.,
Peltidea arctica
(L.) Wahlenb.,
Peltigera arctica
(L.) Räuschel
]
Stephen Sharnoff
LIAS
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Botanische Staatssammlung München
Life habit:
lichenized (mutualistic with algal photobionts)
thallus:
foliose (foliaceous), leaf-like
thallus:
continuous, diffuse, effuse [th] upper surface: yellow(ish) grey | yellow(ish) green [th upper surface]: epruinose [th marginal and upper surface] specific structures: present [th margin] cilia, cilioid structures: absent [th upper surface] isidia, isidioid structures: absent [th upper surface] soredia, soralia, soralioid structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 30.0 [th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus) | distantly discontiguous [th] morphol substructures (eg areoles, lobes, branches) upper
surface:
smooth, plane | rugose, plicate, folded, pustulate, faveolate, wrinkled | uneven, undulate [th] lower surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) black | brown(ish) white
ascomata:
absent | present
ascoma:
apothecial, apothecioid hymenial
ascoma
[mm]: (median) 20.0 (max) 30.0
ascoma:
sessile, superficial [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) black | red(dish) brown (if pale: orange brown) [ascm, if apoth] disc, mazaedium: epruinose [ascm] paraphyses/-oids: present
asci:
lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): absent
ascospores:
(median) 8.0 [asp] shape: elongate-fusiform, ellipsoidal-fusiform [asp] length [µm]: (low) 23.0 (high) 27.0 [asp] width [µm]: (low) 4.0 (high) 5.0 (max) 6.0 [asp] septa: present [asp] septa: transversely septate [asp] transversal septa: (median) 3.0 [asp] pigmentation: pale brown [asp] perispore, epispore: not apparent
conidiomata:
absent | present
conidia:
bacilliform, bacillar [co] length [µm]: (low) 3.0 (high) 4.0
secondary metabolites:
present
secondary metabolites:
methyl gyrophorate | nephroarctin | phenarctin | usnic acid | zeorin (hopane-6α,22-diol)
primary photobiont:
present
secondary photobionts
(eg in cephalodia): absent | present
primary photobiont:
chlorophytaceous trebouxiaceous, chlorococcoid.
substrate:
soil, clay, humus, turf, detritus, dead leaves | bryophytes mosses, liverworts | bark, cork, plant surface trunks, branches, twigs | rock, stones, pebbles unspecified.
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