Top 20 Most Common Toxic or Poisonous Mushrooms in Annapolis

1. Jack-o'lantern mushroom

The jack-o'lantern mushroom is so-called because of its bright orange color, and because it often appears in the fall (usually before Halloween, though). This vibrant little mushroom can be found growing on decaying hardwood stumps and logs. The species does have some superficial resemblances to the highly edible chanterelle (Cantharellus cibarius), but it is toxic and should be avoided!

2. False parasol

Though the false parasol appears unassuming, the species is famous—or, infamous—for its toxicity. It looks unfortunately similar to Agericus campestrus, a commonly eaten mushroom, but the false parasol can be distinguished by its highly unusual green spore print. Although they are no good to eat, they can be pretty to look at. The species may grow in ring-shaped groups in meadows and on forest floors in what are sometimes called "fairy circles."

3. Yellow patches

The yellow patches is a gorgeous, striking species with a deep marigold or vermillion cap that sometimes appears as a blend of the two. Like some other members of the Amanita genus, it also sports patchy white worts - when it's cap is still very convex, it somewhat resembles the famous white and red mushrooms from the Mario Bros video games. While beautiful to look at, this species is toxic and should not be harvested.

4. Common earthball

With an appearance similar to a crusty potato, the common earthball blooms from acidic soils, including compacted paths on the forest floor. It matures to a yellowish tinge and is found across the northern hemisphere. It is a close cousin to bolete mushrooms but is considered to be poisonous and is never eaten.

5. Dead man's hand

Sometimes referred to as a "false Truffle", a trained eye could not easily mistake the dead man's hand for these highly-valued mushrooms. This large puffball-like mushroom develops in the ground, emerging gradually until it finally cracks up and forms a star-shaped fruiting body. The dead man's hand is considered toxic and newbie mushroom hunters should be careful not to confuse it with edible puffballs.

6. Rufous rubber cup

The rufous rubber cup is a tiny, cup-shaped, reddish-brown mushroom that commonly grows on twigs and fallen branches. The species is considered inedible, and its modest look almost certainly wouldn't attract anyone to consume it.

7. Brick cap

This tufting mushroom grows on hardwood stumps and deadwood. The brick cap seems particularly fond of oak wood. It is similar in most respects to the Sulfur Tuft or Conifer Tuft, except that its cap is a brick red color. Brick caps should be regarded as inedible and are likely to cause stomach problems if consumed.

8. Flowerpot parasol

This tropical/subtropical mushroom is known to be toxic. If eaten it causes a very unpleasant stomachache with the risk of fatal complications. In temperate zones, flowerpot parasol is only found in hothouses and greenhouses, so the risk of accidental foraging is low, but it may occur with potted plants and indoor landscaping and pose a risk to curious children.

9. Mower's mushroom

The mower's mushroom, also referred to as the lawnmower's mushroom, is so named because it frequently crops up in lawns. The species is rather nondescript, and it is considered a member of the infamously hard-to-distinguish "Little Brown Mushroom" (LBM) family. While the mower's mushroom is not known to be toxic to humans or dogs, several of these close look-alikes are.

10. Sulphur tuft

The sulphur tuft grows on rotting wood of all types of trees; it is a particularly efficient decomposer of hardwoods. The mushrooms appear from spring to autumn and are often so tightly packed that they interfere with each other’s shape. This poisonous mushroom can cause temporary paralysis, distorted vision, and stomach pain if consumed.

11. Fragile dapperling

The fragile dapperling is a tropical and subtropical woodland species. As its name suggests, this mushroom is so tender and fragile that picking it becomes a real challenge. The stem is very thin and it easily snaps. The edibility of the fragile dapperling is unknown, but the mushroom is probably insufficient for any kind of meal.

12. Yellow-tipped coral

Yellow-tipped coral(Ramaria formosa) is a pinkish, much-branched coral fungus known for its distinct appearance and many colorful varieties. It has been reported to cause gastrointestinal distress in some people, and so consumption is strongly discouraged. Older specimens may become brittle and chalk-like.

13. Onion-stalk parasol mushroom

This generalist mushroom, found across North America, can be found in all sorts of moist woodland settings. The species appears to be particularly fond of wood chips or mulch, and so it is often found in garden or park settings. The onion-stalk parasol mushroom, despite the word "onion" in its name, is inedible.

14. Eastern american floury amanita

Eastern american floury amanita can be found during the late summer to fall in woodland areas. As hinted by its name, young mushrooms are covered in a flour-like powder that may wear off in older mushrooms. Other Amanitas can appear similar, but these mushrooms often have a ring of flesh around the stem and a cup-shaped structure at the base of the stem, which eastern american floury amanita lacks.

15. Syzygites megalocarpus

16. Poison pie

This toxic mushroom blooms on conifer and broadleaf forest floors around the northern hemisphere. It can appear singly, in tufted groups, or in fairy rings. The poison pie can be distinguished from its close relatives by the dark brown watery droplets that form in its gills. As the common name, "poison pie" implies, it is seriously toxic.

17. Trichoderma viride

18. Common ink cap

Common ink cap mushrooms grow in clumps from buried wood or tree stumps. They come up with such strength that they have been known to lift pavement or break through asphalt. As they age, their gills will turn black and liquefy, creating the "inky" substance for which they are named.

19. Onion earthball

The onion earthball is a member of the "tough-skinned puffball" family, a group of mushrooms that are typically bulbous and puff-ball like in form but have a tough outer layer. In the onion earthball's case, that outer layer often fissures, giving the mushroom a cracked appearance. Also distinctive is the stark contrast between this mushroom's skin, usually a pale white or yellow color, and its inner spore tissue, which is nearly black. Onion earthballs are poisonous.

20. False chanterelle

The common name of this mushroom refers to the fact that it looks very similar to the edible and highly prized Chanterelle. This species, however, tastes bitter and may cause poisoning symptoms. False chanterelle occurs around the northern hemisphere in autumn and winter, growing on coniferous detritus, and is more likely to fruit in dry conditions rather than the usual wet.

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