Cladonia corniculata Ahti & Kashiw. (1984: 136)

Yánez-Ayabaca, A., Ahti, T. & Bungartz, F., 2013, The Family Cladoniaceae (Lecanorales) in the Galapagos Islands, Phytotaxa 129 (1), pp. 1-33 : 15

publication ID 10.11646/phytotaxa.129.1.1


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Cladonia corniculata Ahti & Kashiw. (1984: 136)


Cladonia corniculata Ahti & Kashiw. (1984: 136) View in CoL

( Fig. 3e View FIGURE 3 )

Primary thallus subpersistent, of small, suborbicular squamules, esorediate, epruinose; podetia common, whitish gray, brown with age, but not becoming necrotic, elongate; 1–3 cm tall; generally dichotomously branched near its apices; axils close; tips blunt or obtuse, ascyphose; surface completely ecorticate; granulose, with scarce microsquamules that towards the tip merge into fine granules and towards the base of the podetium become larger and more laciniate squamules; surface of old podetia commonly denuded, esorediate; pycnidia with hyaline jelly; apothecia not seen.

Spot tests and chemistry: P+ orange red, K-, C-, KC-, UV-; fumarprotocetraric acid.

Distribution and ecology: Currently known only from Isabela and Santa Cruz Island; known only from the humid zone where the species appears to be moderately common, often growing with other, morphologically similar Cladonia species and amongst bryophytes, in fern-sedge grasslands, over plant debris or even as epiphyte on trunks or branches of both native or introduced trees and shrub.

Notes: Cladonia corniculata can be confused with C. cartilaginea or C. subradiata . For comparison see the notes under C. cartilaginea .

Selected specimens examined: ECUADOR. GALAPAGOS: Isabela Island, Volcán Alcedo, on the crater rim near the hut, 0°26’33” S, 91°5’31” W, 1100 m, humid zone, on soil, 7 Mar 2006, Aptroot, A. 65241 ( CDS 31827) GoogleMaps . Volcán Sierra Negra, near parking place at start of foot path to the crater, 0°49’47.5”S, 91°5’19.80”W, 939 m, humid zone, on bark, 9 Aug 2007, Bungartz, F. 6805 ( CDS 36236) GoogleMaps ; Volcán Cerro Azul, S slope above Iguana Cove, W, 700 m, humid zone, on soil, 22 June 1976, Sipman, H.J.M. L-45 ( COLO 297916 ) , S-slope above Iguana Cove , crater on SE-slope, 800 m, humid zone, 22 June 1976, Sipman, H.J.M. L-55a ( COLO 297905 ) ; Volcán Alcedo, on the crater rim near the hut, 0°26’33”S, 91°5’31”W, 1100 m, humid zone, on bark, 7 Mar 2006, Aptroot, A. 65215 ( CDS 31801) GoogleMaps . Santa Cruz Island, along trail from Media Luna to El Puntudo, 0°39’9.80”S, 90°19’59.29”W, 724 m, humid zone, on bark, 10 Aug 2008, Clerc, P. 08-105 A ( CDS 39959) GoogleMaps , cerca la vía sector Los Gemelos , 0°38’2.10”S, 90°23’37.89”W, 661 m, zona húmeda, sobre corteza, 4 Jan 2007, Nugra, F. 266 ( CDS 33182) GoogleMaps , above Mina Granillo Rojo , on the N-side of the island, 0°37’7.5”S, 90°21’55.5”W, 607 m, transition zone, on rock, 7 Aug 2008, Clerc, P. 08-44 ( CDS 39898) GoogleMaps , vicinity of Academy Bay, on trail to La Copa (= Media Luna ), humid zone, on bark, 15 Feb 1964, Weber, W.A. 68 ( COLO 190028 ) .


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