biodiversity lichens

7/22/2019 Biodiversity Lichens

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17.11.13. biodiversitylichens

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Arboretum Lichens

Pin-cushion Sunburst Lichen, Xanthoria polycarpa.Photo by Troy McMullin.

Lichens are usually a combination of a fungus and a green algae or a blue-green algae or a combination of all three. In this symbiotic

relationship, the fungus is able to obtain nutrients from the air and water that washes over them, while the algae is able to get energy from the

sun (photosynthesis). Troy McMullin has done extensive research on lichens here at The Arboretum. To learn more about Troy and his

research, please click here. Troy and his colleagues Steven Newmaster and Jose Maloles have discovered 88 species of lichens in The

Arboretum so far, including a species new to science! Troy is the instructor for our Lichen Workshop as well; click herefor more information.
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This tiny new-to-science lichen species was found in The Arboretum. Photo by Jose Maloles.

Lichens come in a variety of sizes, shapes and colours.

Bacidina egenula.Photo by Troy McMullin


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Sulphur Firedot Lichen, Caloplaca flavovirescens.Photo by Troy McMullin.

Powder-edged Speckled Greenshield Lichen,Flavopunctelia soredica.Photo by Troy McMullin

Powdery Sunburst Lichen, Xanthomendoza ulophyllodes.Photo by Troy McMullin


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This cool photo by Patrick Boerlin shows a piece of bark from The Arboretum with f ive of the six most common species of lichens

found here. The inset photo is the sixth species.

Lichens and Allied Fungi of The Arboretum, Guelph, Ontario

+ = Big six (most common and abundant species)

# = Lichenolicolous fungi (parasites on living lichens)

= Saprophytic fungi

= Allied fungi (nonlichenized)

Scientific Name Vernacular Name

Acarospora fuscata Brown cobblestone lichen

Acarospora moenium none known

Amandinea punctata Tiny button lichen

Anisomeridium polypori none known

Arthonia caudata none known

Arthrosporum populorum none known

Bacidina egenula none known

Caloplaca arenaria Granite firedot lichen

Caloplaca cerina Gray-rimmed firedot lichen

Caloplaca feracissima Sidewalk firedot lichen

Caloplaca flavovirescens Sulphur firedot lichen

Caloplaca holocarpa Firedot lichenCaloplaca pyracea Firedot lichen

Candelaria concolor + Candleflame lichen

Candelariella aurella Hidden goldspeck lichen

Candelariella efflorescens Powdery goldspeck lichen

Candelariella vitellina Common goldspeck lichen

Chaenotheca sp. Whisker lichen

Chaenotheca xyloxena Snag whiskers

Chaenothecopsis exilis Pin lichen

Chaenothecopsis sp. Ambiguous pin lichen

Chrysothrix caesia Frosted comma lichen

Cladonia coniocraea Common powderhorn

Cladonia fimbriata Trumpet lichenCladonia macilenta Lipstick powderhorn

Cladonia ochrochlora Smooth-footed powderhorn

Cladonia pyxidata Pebbled pixie-cup

Cladonia rei Wand lichen


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Cyphelium tigillare Soot lichen

Evernia mesomorpha Boreal oakmoss

Evernia prunastri Oakmoss lichen

Flavoparmelia caperata Common greenshield lichen

Flavopunctelia soredica Powder-edged speckled greenshield

Graphis scripta Common script lichen

Hyperphyscia adglutinata Grainy shadow-crust

Hypocenomyce scalaris Common clam lichen

Julella fallaciosa none known

Lecania croatica none knownLecania naegelii none known

Lecanora allophana Brown-eyed rim lichen

Lecanora polytropa Granite-speck rim lichen

Lecanora sambuci Rim-lichen 2

Lecanora semipallida Rim-lichen 3

Lecanora symmicta Fused rim lichen

Lecanora thysanophora Mapledust

Lecidella stigmatea Disk lichen

Lecidea sp. Tile lichen

Lepraria finkii Fluffy dust lichen

Lepraria neglecta Zoned dust lichen

Marchandiomyces corallinus # none knownMelanelixia subaurifera Abraded camouflage lichen

Micarea peliocarpa Shadow dot lichen

cf.Micarea prasina Dot lichen

Mycocalicium subtile Snag pin

Ochrolechia androgyna Powdery saucer lichen

Ochrolechia arborea Saucer lichen

Parmelia sulcata + Hammered shield lichen

Phaeocalicium curtisii Sumac needle lichen

Phaeocalicium polyporaeum Polypore needle lichen

Phaeophyscia adiastola Powder-tipped shadow lichen

Phaeophyscia hirsuta Hairy Shadow lichen

Phaeophyscia orbicularis Mealy shadow lichenPhaeophyscia pusilloides Pompon shadow lichen

Phaeophyscia rubropulchra Orange-cored shadow lichen

Physcia adscendens + Hooded rosette lichen

Physcia aipolia Hoary rosette lichen

Physcia millegrana + Mealy rosette lichen

Physcia stellaris + Star rosette lichen

Physciella chloantha Powdery-margined cryptic rosette

Physciella melanchra Mealy cryptic rosette

Physconia enteroxantha Yellow-edged frost lichen

Porpidia speirea Boulder lichen

Protoblastenia rupestris Orange dot lichen

Protoparmelia hypotremella none knownPunctelia rudecta Rough speckled shield lichen

Rinodina destituta none known

Rinodina freyi none known

Sarcogyne regularis Frosted grain-spored lichen

Sphinctrina anglica# Short-stalked pin lichen

Trapeliopsis flexuosa Board lichen

Usnea hirta Bristly beard lichen

Verrucaria nigrescens Speck lichen

Xanthomendoza fallax + Hooded sunburst lichen

Xanthomendoza ulophyllodes Powdery sunburst lichen

Xanthoparmelia cumberlandia Cumberland rock-shield

Xanthoria parietina Maritime sunburst lichenXanthoria polycarpa Pin-cushion sunburst lichen

Species found near, but not in, The Arboretum

Multiclavula mucida Club-mushroom lichen


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Xanthoria elegans Elegant sunburst lichen

Troy McMullin, July 20, 2012

Click here for a pdf list of Arboretum Lichen species.

Click hereto return to The Arboretum Biodiversity page.

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biodiversity lichens

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