Calicium corynellum

Calicium corynellum (Ach.) Ach., Methodus, sectio prior: 94. 1803.

MycoBank MB229988

AUTHOR: Prieto M., Olariaga I.

Lichen corynellus Ach., Lichenogr. suec. prodr.: 85. 1799. [1798]. Typification: Tibell, Ann. Bot. Fenn. 24: 264. 1984.

Caliciella corynella (Ach.) Vain., Acta Soc. Fauna Fl. Fenn. 57(1): 53. 1927.

= Calicium paroicum Ach., Methodus, sectio prior: 89. 1803.* Typification: Tibell, Ann. Bot. Fenn. 24: 271. 1984.

= Calicium corynellum var. paroicum (Ach.) Ach., Kongl. Vetensk. Acad. Nya Handl. 29: 278. 1808.

= Sphinctrina paroica (Ach.) Trevis., Flora 45: 4. 1862.

= Chaenotheca paroica (Ach.) Zwackh., Flora 45: 536. 1862.

= Calicium chlorinum f. paroicum (Ach.) Körb., Parerga lichenol. 4: 292. 1863. [* paroicum]

= Cyphelium paroicum (Ach.) Arnold, Flora 57: 87. 1874.

= Strongyleuma paroicum (Ach.) Vain., Acta Soc. Fauna Fl. Fenn. 57(1): 72. 1927.

= Caliciella corynella var. subsessilis Vain., Acta Soc. Fauna Fl. Fenn. 57(1): 54. 1927.**

= Calicium corynellum var. subsessile (Vain.) Zahlbr., Cat. Lich. Univ. 8(1): 158. 1931.


* Synonym based onTibell (Ann. Bot. Fenn. 24: 271. 1984).

** Synonym based on the revision of the protologue and also adopted by Muñiz Pérez (2013).


Taxonomic classification

phy Ascomycota

sbp Pezizomycotina

cls Lecanoromycetes

sbc Agaricomycetidae

ord Caliciales

fam Caliciaceae

gen Calicium

sp Calicium corynellum


Thallus rather thick, granular to leprarioid, bright yellowish green. Ascomata estipitate, apotecioid, black, up to 0.6 mm high, with a weak greenish pruinon the outside that disappears with age. Capitulum lenticular and up to 0.4 mm diam. Stipe composed of dark brown hyphae, interwoven, 2-3 µm broad. Macedium well developed, black. Asci claviform, with 8 biseriate or triseriate ascospores. Ascospores ellipsoidal, 1-septate, brown, 12-14 x 4.5-6 µm (after Tibell, Nordic Lichen Flora 1: 24. 1999), constricted in the septum, with conspicuous ornamentation composed of  irregular cracks. Chemistry: Thallus K-, C-, KC-, Pd-. It contains rhizocarpic acid, sometimes also usnic acid (Prieto et al., Lichenologist 52(4): 333-335. 2020).

Habitat and distribution: Species that occurs in overhangs or creeks of granitic rocks protected from the rain, normally in shaddy places with high humidity. Broadly distributed in siliceous areas of the Iberian Peninsula, although it is overlooked and it should be found in more provinces.  Locally abundant in the north of Madrid province (Hoyo de Manzanares, Colmenar Viejo), where some populations contain dozens of individuals.

References in our territory
Specimens in scientific collections

* sequenced material

Reference specimen marked in bold  


CR: herb. Sarrión 24, 24, 496, 1081 (det. Sarrión et al.)

(Cs): BDBCV-General: 632490

Cu: VAL-Lich 2707

Le: BCNLich (rev. Muñiz Pérez)

M: MAF-Lich 3911 (rev. Muñiz Pérez), MAF-Lich 3912 (rev. Muñiz Pérez), ARAN-Fungi 8454* (det. Prieto & Olariaga), ARAN-Fungi 13791 (det. Prieto & Olariaga.

Na: herb Etayo s.n (det. J. Etayo)

Se: SEVF 0405, SEVF0406

Te: MA-Lichen 7730 (rev. Muñiz Pérez), BCNLich 17748 (rev. Muñiz Pérez)

To: herb. Sarrión 293

Za: BCNLich s.n. (rev. Muñiz Pérez)



TM: COI s.n. (rev. Sarrión et al.)


Sequences in public databases obtained from material collected in our territor

ARAN-Fungi 8454: MT068632 (ITS)

ARAN-Fungi 8329: MT068634 (ITS)


Precise collection spot of the reference specimen (ARAN-Fungi 8454), marked with the white  arrow. Photograph: M. Prieto & I. Olariaga.

Thalli growing on a overhang protected from the rain, in the same locality as the reference specimen (ARAN-Fungi 8454). Photograph: M. Prieto & I. Olariaga.

Thallus and ascomata of Calicium corynellum (ARAN-Fungi 8454). Photograph: I. Olariaga.


How to cite this sheet:

Prieto M, Olariaga I. 2020. Calicium corynellum (Ach.) Ach. Fichas SIM (Updated on  6-IX-2020)