Most observed native rosette lichens, frost lichens, and allies
81 species, native to the US, by observations.
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Hooded Rosette Lichen
Physcia adscendens
22,168 observations
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Star Rosette Lichen
Physcia stellaris
13,291 observations
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Rosette Lichen
Physcia millegrana
10,746 observations
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Hoary Rosette Lichen
Physcia aipolia
10,699 observations
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Mealy Shadow Lichen
Phaeophyscia orbicularis
8,984 observations
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Blue-gray Rosette Lichen
Physcia caesia
7,817 observations
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Fringed Rosette Lichen
Physcia tenella
6,755 observations
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Orange-cored Shadow Lichen
Phaeophyscia rubropulchra
5,368 observations
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Powdery-margined Cryptic Shade Lichen
Physciella chloantha
3,847 observations
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Grainy Shadow-crust Lichen
Hyperphyscia adglutinata
2,324 observations
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Pom-pom Shadow Lichen
Phaeophyscia pusilloides
2,203 observations
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Yellow-edged Frost Lichen
Physconia enteroxantha
2,068 observations
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White Fringe
Heterodermia albicans
1,938 observations
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Powder-tipped Rosette Lichen
Physcia dubia
1,895 observations
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American Rosette Lichen
Physcia americana
1,838 observations
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Elegant Fringe Lichen
Heterodermia leucomelos
1,826 observations
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Bottlebrush Frost Lichen
Physconia detersa
1,807 observations
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Shaggy-fringe Lichen
Anaptychia palmulata
1,720 observations
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Hairy Shadow Lichen
Phaeophyscia hirsuta
1,514 observations
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Powdered Fringe Lichen
Heterodermia speciosa
1,438 observations
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Powder-tipped Shadow Lichen
Phaeophyscia adiastola
1,347 observations
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Ciliate Wreath Lichen
Phaeophyscia ciliata
1,285 observations
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Smooth Shadow-crust Lichen
Hyperphyscia syncolla
1,116 observations
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Thomson's Rosette Lichen
Physcia thomsoniana
1,062 observations
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Crescent Frost Lichen
Physconia perisidiosa
1,046 observations
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Black-eyed Rosette Lichen
Physcia phaea
996 observations
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Lesser Gray Legs
Physcia pumilior
752 observations
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Frosted Rosette Lichen
Physcia biziana
727 observations
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Sandy Oysters
Phaeophyscia nigricans
590 observations
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Ground Frost Lichen
Physconia muscigena
336 observations
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Mealy Cryptic Shade Lichen
Physciella melanchra
309 observations
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Obscure Shield Lichen
Heterodermia obscurata
306 observations
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Flowering Fringe
Heterodermia echinata
264 observations
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Slender Rosette Lichen
Physcia subtilis
262 observations
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Disregarded Fringe
Heterodermia neglecta
260 observations
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Scaly Fringe Lichen
Heterodermia squamulosa
209 observations
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Whiskered Shadow Lichen
Phaeophyscia hispidula
180 observations
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Scaly Shadow Lichen
Phaeophyscia squarrosa
171 observations
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Dark Shadow Lichen
Phaeophyscia sciastra
167 observations
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Cupped Fringe Lichen
Heterodermia hypoleuca
158 observations
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Streaked Rosette Lichen
Physcia atrostriata
138 observations
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Coralloid Rosette-Lichen
Heterodermia japonica
138 observations
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Branching Fringe Lichen
Heterodermia galactophylla
85 observations
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Exuberant Rosette Lichen
Physcia dimidiata
76 observations
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Scaly Pepper-spore Lichen
Rinodina ascociscana
69 observations
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Pale Pepper-spore
Rinodina oxydata
53 observations
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Rinodina Lichen
Rinodina tephraspis
53 observations
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Heterodermia casarettiana
46 observations
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Pincushion Shadow Lichen
Phaeophyscia constipata
44 observations
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Ashen Pepper-spore
Rinodina cana
41 observations