Roderick W Rogers - members.westnet.com.au - Westnet

Lichens of Subtropical Queensland R.W.Rogers
10(9) Thallus with long rhizoidal extensions into the soil Siphula
Thallus attached by a holdfast, without rhizoids 11
11(10) Branches with numerous minute leafy appendages on the branches
Stereocaulon
Branches without leafy appendages Bunadophoron
11(9) Apothecial disc black, on soil Ramalea
Apothecial disc buff, on bark, wood or rock Ramalina
Leafy or Foliose Lichens
12(1) The lower surface with discrete rhizines that may be simple or branched but
not felted, without vein-like markings, woolly tomentum or pores.
13
Lower surface naked or with a felted or carpet-like tomentum (with or
without rhizines), or with vein-like markings (from which rhizines may
develop) or with pores that may be either cup-like or filled with hyphal
masses. 43
Foliose lichens always and only with discrete rhizines on the lower surface
13(12) Cilia growing from the margin of the lobes at least sparsely 14
Cilia not present on the margins of the lobes 27
14(13) Cilia broadening into a bulb at the base 15
Cilia without a basal bulb, but may be thickened 16
15(14) Lobes grey Bulbothrix
Lobes green Relicina
16(14) Upper cortex brown Phaeophyscia
Upper cortex grey or green 17
17(16) Rhizines dichotomously branched 18
Rhizines simple or bushy at the tips 19
18(17) Upper cortex of longitudinal hyphae, often without a lower cortex,
upper surface sometimes ciliate, ascospores brown, two-celled
Heterodermia
Upper cortex of vertical hyphae, lower cortex always present,
upper surface never ciliate, ascospores hyaline, one celled
Hypotrachyna
19(17) Ascospores 2-celled, brown, lobes usually 2mm broad 21
16