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Canoparmelia owariensis
(Asah.) Elix
Thallus foliose, closely adnate, 2-5 cm wide; lobes 0.5-2 mm wide, eciliate.
Upper surface mineral grey, with sparse isidia becoming pustulate; becoming
cracked in older parts. Lower surface dark brown to black to margins of thallus
lobes, sparsely rhizinate. Apothecia very rare, lecanorine. Spores colourless, 1-
celled. Photobiont: chlorococcoid. Spot-tests: cortex K+ yellow (atranorin).
Medulla K-, C-, KC- or KC+ faint pink, P-, UV+ white (divaricatic acid). - A
mainly saxicolous species, also reported from Africa, Thailand, Hong Kong,
Japan and Australia.
Canoparmelia texana
(Tuck.) Elix & Hale
Thallus foliose, adnate, 6-12 cm wide; lobes (1-)3-5 mm wide, eciliate. Upper
surface grey-white or yellowish-white, with laminal, initially somewhat
pustulate soralia. Lower surface black with a brown erhizinate zone; rhizines
simple, sparse, black. Apothecia very rare, lecanorine. Spores colourless, 1-
celled. Photobiont: chlorococcoid. Spot-tests: cortex K+ yellow (atranorin).
Medulla K-, C-, KC- or KC+ faint pink, P-, UV+ white (divaricatic acid). - A
rather rare, corticolous species of open forests, widely distributed in tropical–
subtropical regions of the world.
Cetrelia braunsiana
(Müll. Arg.) W.L. Culb. & C.F. Culb.
Thallus foliose, medium to large, 5-17 cm broad; lobes 0.5-0.7 cm broad.
Granular or coralloid isidia finely or poorly developed along the margins or on
the upper surface; upper surface ashy-green, tan or uniformly brownish in old
herbarium specimens. Margins ascendent, with small, punctiform to irregular
pseudocyphellae rarely exceeding 1 mm. Lower surface black; margins brown
or greyish; rhizines black, c. 1 mm. Pycnidia present in some specimens, limited
to the tips of isidia. Photobiont: chlorococcoid. Spot-tests: upper cortex K+
yellow (atranorin). Medulla K-, C−, KC+ pink, P− (alectoronic,
α
-collatolic
acids, 4-Omethylphysodic acid). - Reported from Sri Lanka, identification at
species level in need of confirmation.
Cladonia cartilaginea
Müll. Arg.
Primary thallus squamulose, evanescent, the squamules green on upper side,
pale beneath. Secondary thallus fruticose, consisting of simple to branched
podetia which are 6-15(-25) mm tall, white to light grey, slender, decorticate,
with sparse granular soredia, circular to angular in cross-section, the exposed
stereoma very hard to cut, even with a razor blade. Apothecia and pycnidia dark
brown, at the tips of podetia. Photobiont: chlorococcoid. Spot-tests: K-, KC-, C-
, P+ red. - Rare and localised, found at forest margins in open sunny habitats,
mostly restricted to humid high elevation forests above 900-1200 m (Kandy and
Nuwara Eliya).
