Denver-Boulder Metro Area: Fungi, Lichen, Algae, and Slime Molds

This guide contains fungi, lichens, algae, and slime molds that can be found in the Denver-Boulder Metro Area, including Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson Counties.

watermelon snow ¹
Chlamydomonas nivalis

Stephanosphaera pluvialis ²

Water Net ³
Hydrodictyon reticulatum

Monactinus simplex ³

Desmodesmus communis ⁴

Poplar Rust ⁵
Melampsora medusae

Willow Rust ⁶
Melampsora epitea

Western Gall Rust ⁷
Cronartium harknessii

spruce witch's broom rust ⁸
Chrysomyxa arctostaphyli

tongues of fire ⁹
Gymnosporangium clavariiforme

Juniper-hawthorn rust ¹⁰
Gymnosporangium globosum

juniper-apple rust ¹¹
Gymnosporangium juniperi-virginianae

thistle rust ¹²
Puccinia punctiformis

Mustard Flower Rust ¹³
Puccinia monoica

Gold Dust Waxy Cap ¹⁴
Hygrophorus chrysodon

Larch Waxy Cap ¹⁵
Hygrophorus speciosus

rosy woodwax ¹⁶
Hygrophorus pudorinus

Witch's Hat ¹⁷
Hygrocybe conica

Fairy Ring Marasmius ¹⁸
Marasmius oreades

Lilac Bonnet ¹⁴
Mycena pura

Honey Mushroom ¹⁹
Armillaria mellea

Armillaria solidipes ²⁰

Flammulina populicola ¹⁴

Velvet Foot ²¹
Flammulina velutipes

pinelitter gingertail ¹⁴
Xeromphalina cauticinalis

Oak-leaf Pinwheel ²²
Collybiopsis quercophila

Cluster Cap ²³
Connopus acervatus

Banded Mottlegill ²⁴
Panaeolus cinctulus

Mower's Mushroom ¹⁵
Panaeolus foenisecii

Petticoat Mottlegill ²⁵
Panaeolus papilionaceus

Shiny Mottlegill ²⁶
Panaeolus semiovatus

Panaeolus subbalteatus ¹⁵

Sandy Stilt-puffball ²⁷
Battarrea phalloides

Shield Dapperling ²⁵
Lepiota clypeolaria

Stinking Dapperling ²⁸
Lepiota cristata

Crucibulum cyathiforme ²³

Common Bird's-Nest ²⁹
Crucibulum laeve

field bird's nest fungus ³⁰
Cyathus olla

dung-loving bird's nest fungus ³¹
Cyathus stercoreus

deceiver ¹⁴
Laccaria laccata

Laccaria nobilis ²⁰

Funeral Bell ³²
Galerina marginata

Common Fieldcap ³³
Agrocybe pediades

Spring Fieldcap ¹⁴
Agrocybe praecox

Destructive Pholiota ³⁴
Hemipholiota populnea

reddening lepiota ³⁵
Leucoagaricus americanus

smoky dapperling ¹⁴
Leucoagaricus barssii

White Dapperling ³⁶
Leucoagaricus leucothites

Meadow Mushroom ³⁷
Agaricus campestris

The Prince ¹⁴
Agaricus augustus

Yellow Stainer ¹⁸
Agaricus xanthodermus

White Button Mushroom ²⁷
Agaricus bisporus

Pavement Mushroom ³⁸
Agaricus bitorquis

Salty Mushroom ³⁹
Agaricus bernardii

Blushing Wood Mushroom ⁴⁰
Agaricus sylvaticus

Agaricus sylvaticus occidentalis ²³

green-spored parasol ⁴¹
Chlorophyllum molybdites

Shaggy Parasol ⁴²
Chlorophyllum brunneum

Shaggy Parasol ⁴³
Chlorophyllum rhacodes

flowerpot parasol ⁴⁴
Leucocoprinus birnbaumii

onion-stalk parasol ⁴⁵
Leucocoprinus cepistipes

Peeling Puffball ⁴⁶
Lycoperdon marginatum

common puffball ¹⁴
Lycoperdon perlatum

Meadow Puffball ⁴⁷
Lycoperdon pratense

Western Giant Puffball ⁴⁸
Calvatia booniana

Sculpted Puffball ⁴⁹
Calvatia sculpta

Pear-shaped Puffball ⁵⁰
Apioperdon pyriforme

Cortinarius pinguis ¹⁴

Sulphur Tuft ⁵¹
Hypholoma fasciculare

Chip Cherries ⁵²
Leratiomyces ceres

Mulch Maids ¹⁸
Leratiomyces percevalii

Garland Roundhead ⁵¹
Stropharia coronilla

Conifer roundhead ¹⁴
Stropharia hornemannii

Wine-cap Stropharia ⁵³
Stropharia rugosoannulata

shaggy scalycap ⁵⁴
Pholiota squarrosa

Shaggy Mane ⁵⁵
Coprinus comatus

milky conecap ¹⁴
Conocybe apala

yellow fieldcap ¹⁴
Bolbitius titubans

Pale Brittlestem ⁵⁶
Candolleomyces candolleanus

Common Ink Cap ⁵⁷
Coprinopsis atramentaria

Magpie Inkcap ⁵⁸
Coprinopsis picacea

scaly ink cap ⁵⁹
Coprinopsis variegata

Snowy Inkcap ⁶⁰
Coprinopsis nivea

pleated inkcap ⁶¹
Parasola plicatilis

flocculose inkcap ⁶²
Coprinellus flocculosus

mica cap ⁶³
Coprinellus micaceus

Pearly Powdercap ⁶⁴
Cystoderma carcharias

Poplar-loving Ringless Amanita ⁶⁵
Amanita populiphila

grisette ⁶⁶
Amanita vaginata

Fly Agaric ⁶⁷
Amanita muscaria

Panthercap ⁶⁸
Amanita pantherina

Small Funnel-Veil Amanita ⁵⁹
Amanita multisquamosa

Stubble Rosegill ¹⁴
Volvopluteus gloiocephalus

Goldleaf Shield ¹⁴
Pluteus romellii

Silky Rosegill ⁶⁹
Volvariella bombycina

Collybia pinastris

Brownit ⁶²
Clitocybe brunneocephala

Aniseed Funnel ⁷⁰
Clitocybe odora

Necklace Tricholoma ⁷¹
Tricholoma focale

Tricholoma vaccinum ⁷¹

Edited by Colorado Parks and Wildlife, some rights reserved (CC BY-SA)

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Denver-Boulder Metro Area: Fungi, Lichen, Algae, and Slime Molds

watermelon snow 1 Chlamydomonas nivalis

Water Net 3 Hydrodictyon reticulatum

Poplar Rust 5 Melampsora medusae

Willow Rust 6 Melampsora epitea

Western Gall Rust 7 Cronartium harknessii

spruce witch's broom rust 8 Chrysomyxa arctostaphyli

tongues of fire 9 Gymnosporangium clavariiforme

Juniper-hawthorn rust 10 Gymnosporangium globosum

juniper-apple rust 11 Gymnosporangium juniperi-virginianae

thistle rust 12 Puccinia punctiformis

Mustard Flower Rust 13 Puccinia monoica

Gold Dust Waxy Cap 14 Hygrophorus chrysodon

Larch Waxy Cap 15 Hygrophorus speciosus

rosy woodwax 16 Hygrophorus pudorinus

Witch's Hat 17 Hygrocybe conica

Fairy Ring Marasmius 18 Marasmius oreades

Lilac Bonnet 14 Mycena pura

Honey Mushroom 19 Armillaria mellea

Velvet Foot 21 Flammulina velutipes

pinelitter gingertail 14 Xeromphalina cauticinalis

Oak-leaf Pinwheel 22 Collybiopsis quercophila

Cluster Cap 23 Connopus acervatus

Banded Mottlegill 24 Panaeolus cinctulus

Mower's Mushroom 15 Panaeolus foenisecii

Petticoat Mottlegill 25 Panaeolus papilionaceus

Shiny Mottlegill 26 Panaeolus semiovatus

Sandy Stilt-puffball 27 Battarrea phalloides

Shield Dapperling 25 Lepiota clypeolaria

Stinking Dapperling 28 Lepiota cristata

Common Bird's-Nest 29 Crucibulum laeve

field bird's nest fungus 30 Cyathus olla

dung-loving bird's nest fungus 31 Cyathus stercoreus

deceiver 14 Laccaria laccata

Funeral Bell 32 Galerina marginata

Common Fieldcap 33 Agrocybe pediades

Spring Fieldcap 14 Agrocybe praecox

Destructive Pholiota 34 Hemipholiota populnea

reddening lepiota 35 Leucoagaricus americanus

smoky dapperling 14 Leucoagaricus barssii

White Dapperling 36 Leucoagaricus leucothites

Meadow Mushroom 37 Agaricus campestris

The Prince 14 Agaricus augustus

Yellow Stainer 18 Agaricus xanthodermus

White Button Mushroom 27 Agaricus bisporus

Pavement Mushroom 38 Agaricus bitorquis

Salty Mushroom 39 Agaricus bernardii

Blushing Wood Mushroom 40 Agaricus sylvaticus

green-spored parasol 41 Chlorophyllum molybdites

Shaggy Parasol 42 Chlorophyllum brunneum

Shaggy Parasol 43 Chlorophyllum rhacodes

flowerpot parasol 44 Leucocoprinus birnbaumii

onion-stalk parasol 45 Leucocoprinus cepistipes

Peeling Puffball 46 Lycoperdon marginatum

common puffball 14 Lycoperdon perlatum

Meadow Puffball 47 Lycoperdon pratense

Western Giant Puffball 48 Calvatia booniana

Sculpted Puffball 49 Calvatia sculpta

Pear-shaped Puffball 50 Apioperdon pyriforme

Sulphur Tuft 51 Hypholoma fasciculare

Chip Cherries 52 Leratiomyces ceres

Mulch Maids 18 Leratiomyces percevalii

Garland Roundhead 51 Stropharia coronilla

Conifer roundhead 14 Stropharia hornemannii

Wine-cap Stropharia 53 Stropharia rugosoannulata

shaggy scalycap 54 Pholiota squarrosa

Shaggy Mane 55 Coprinus comatus

milky conecap 14 Conocybe apala

yellow fieldcap 14 Bolbitius titubans

Pale Brittlestem 56 Candolleomyces candolleanus

Common Ink Cap 57 Coprinopsis atramentaria

Magpie Inkcap 58 Coprinopsis picacea

scaly ink cap 59 Coprinopsis variegata

Snowy Inkcap 60 Coprinopsis nivea

pleated inkcap 61 Parasola plicatilis

flocculose inkcap 62 Coprinellus flocculosus

mica cap 63 Coprinellus micaceus

Pearly Powdercap 64 Cystoderma carcharias

Poplar-loving Ringless Amanita 65 Amanita populiphila

grisette 66 Amanita vaginata