LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 4860

Polyblastia melaspora (Taylor) Zahlbr.

Characters[*]:Character States[*]:
global occurrence: Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic
substrate: rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – episubstratal – unspecified
thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose
[th] upper surface: grey(ish) | white(ish)
[th upper surface]: epruinose
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) upper surface: verrucose, warted | cracked, fissured, fractured, rimulose, subrimose | uneven, undulate
ascomata: absent | present
ascoma: perithecial, perithecioid – hymenial
ascoma [mm]: (low) 0.4 (high) 0.8
ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) (if pale: fawn, tan; if mid: cinnamon)
[ascm, if apoth] margin excipular photobionts: absent
[ascm] paraphyses/-oids: absent | present
asci: fissitunicate – bitunicate
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): absent
ascospores: (median) 8.0
[asp] shape: ellipsoidal
[asp] length [µm]: (min) 20.5 (low) 28.5 (high) 36.0 (max) 38.5
[asp] width [µm]: (min) 12.0 (low) 15.0 (high) 20.5 (max) 23.8
[asp] septa: present
[asp] septa: muriformly septate – muriform, submuriform
[asp] transversal septa: (median) 5.0
[asp] pigmentation: dark brown
[asp] perispore, epispore: not apparent
secondary metabolites: absent
primary photobiont: present
secondary photobionts (eg in cephalodia): absent
primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid

[*] Not all (synonymous, equivalent or similar) terms being provided in parallel for a character or character state (e.g. 'endosubstratal, inconspicuous, immersed') need to be valid for the taxon under concern.


© 2001–2023 by Botanische Staatssammlung M√ľnchen
Impressum · Disclaimer · Webmaster