Observation 272002: Graphis plumierae Vain.

When: 2014-06-28

Collection location: Sintra, Portugal [Click for map]

Who: zaca

No specimen available

Notes:
(See Observation 271993)

SPECIES: Graphis plumierae
DATE: 2014/06/28
SPECIMEN Nº: 6573
PLACE: Sta. Eufémia – Serra de Sintra, Sintra, Portugal
HABITAT: Mixed forest, dominated by Quercus trees
SUBSTRATE: Quercus tree
MICRO FEATURES:

  • Striation: Entire
  • Carbonization: Lateral
  • Inspersion: Inspersed
  • Ascospores: Transverse – small
    • GROUP No.: 6 (as defined in Ref. 1 of this observation)

CHEMISTRY: K+y_r (yellow to red)
ASCOSPORES DIMENSIONS:
(26.5) 32.5 – 39.9 (43.3) x (6.4) 6.9 – 7.8 (7.9) µm
Q = (4.1) 4.3 – 5.6 (6.1) ; N = 24
Me = 35.5 × 7.3 µm ; Qe = 4.8
EVOLUTION IN THE KEY: (according Ref. 1 of this observation)
Group 6: Labia entire, excipulum laterally carbonized, hymenium inspersed, ascospores transversely septate
1 Norstictic or stictic acid (K+ yellow or K+ yellow forming red crystals). . . . . . 2
2 (1) Norstictic acid (K+ yellow forming red crystals) . . . . . . . . . . . . . . . . . . . 4
4 (2) Ascospores small to very small (15–45 × 5–9 μm); lirellae variable . . . . . . 5
5 (4) Disc concealed; lirellae variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7 (5) Labia white-pruinose; lirellae immersed, with lateral thalline margin (caesiella morph); Neotropics [holotype: Guadeloupe, Duss 1189 (TUR-Vainio 27732!)] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Graphis plumierae Vain.

EXTERNAL LINKS: (with illustrations of the species)
http://www.discoverlife.org/mp/20p?see=I_RL236&res=640

Images

Microscopy: Apothecial sections;
Microscopy: Asci and spores.
Specimen-ink sketch

Proposed Names

87% (1)
Recognized by sight
Used references: Ref. 1 – Robert Lucking, Alan W. Archer, and André Aptroot : A world-wide key to the genus Graphis (Ostropales: Graphidaceae), The Lichenologist 41 (4): 363-452, 2009;
Ref. 2 – Robert Lucking: The taxonomy of the genus Graphis sensu Staiger (Ascomycota: Ostropales: Graphidaceae), The Lichenologist 41 (4): 319-362, 2009;
Ref. 3 – Robert Lücking, José L. Chaves, Harrie J. M. Sipman, Loengrin Umaña, and André Aptroot: A first assessment of the Ticolichen Biodiversity Inventory in Costa Rica: The genus Graphis, with notes in the genus Hemithecium (Ascomycota: Ostropales: Graphidaceae), Fieldiana Botany 46 (Jul 2008):1-126, 2009;
Ref. 4 – Zacarias Lepista and André Aptroot: Seven species of Graphis from Portugal reported new to Europe, The Lichenologist 48(4): 259–267 (2016).
Based on microscopic features
Based on chemical features

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