Ganoderma Curtisii (Berk.) Murrill. =Polyporus Curtisii Berk. Hook. Jour. Bot. 1: Pileus corky to woody, reniform, convex above, concave below. Ganoderma curtisii is considered by some mycologists to be a different species because of its brighter yellow colors and geographic restriction to the. Ganoderma curtisii (Berk.) Murrill, North American Flora 9 (2): () [MB# ].

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Reishi, lingzhi, varnish shelf, artists conk. All Ganoderma species are polypores with a bright white pore surface that bruises brown when touched or scratched.

They all produce brown spores, but unlike most gilled mushrooms, it can be difficult to obtain a spore print from Ganoderma mushrooms. The spore deposits are usually found coating the tops of the caps at full maturity. Leave the foil or paper in place until a visible spore deposit is observed. Ganodermas have a bright, white, outer growth margin while growing. As growth continues, the margin maybegin to change color and develop a tough skin that has a shiny lacquered appearance in many species.

Ganoderma Curtisii

Ganoderma applanatum is a perennial, hard, woody, sessile conk. When young, it is grayish-white in color, with a dull non shiny texture. It later turns brown after becoming covered in spores. The cap ranges from approximately inches across, and the pore surface contains pores per mm.

The tubes are approximately mm long. Spores x 6. Ganoderma sessile is an annual, red, laccate lacquered-appearingsessile conk, approximately inches in diameter. It is found on tree trunks or in a rosette growing closer to the ground from tree roots. It is occasionally stipitate when growing in an area that allows for the collection of excess carbon dioxide, but not necessarily. The flesh is soft, rubbery and bendable, and the outer growth margin, when cut or damaged, will produce a resinous liquid that resembles tree sap when dried.


The internal flesh varies in color from cream white when young to a deep chestnut brown at maturity often much darker than the context of G. Shape is highly variable depending on the growing environment. The pores are often variable in shape and size, per mm.

Mushroom Observer: Name: Ganoderma curtisii (Berk.) Murrill

Tube length ganodermw approx. Spores ellipsoid-ovate and truncate at one end, 9—11 x 5—7 microns. Ganoderma curtisii is an annual, red, laccate, stipitate conk, approximately inches cuttisii, with the stem ranging from inches in length. The white growth margin ages to a bright yellow before finally turning a deep red with purple hues at full maturity. The internal flesh of the cap is much lighter at maturity than G. The lacquered skin is less shiny than that of G.

Often mistaken for G. Ganoderma tsugae is an annual, glossy conk ranging from inches in diameter with a laterally attached stipe ganodetma sometimes the stipe is absent.

The lacquer of G. Spores x 7. Ganoderma mushrooms are saprotrophic, white rot, wood-decaying fungi found on dead or dying hardwoods and occasionally conifers.

There are no poisonous lookalikes, but it is important that all Ganoderma mushrooms be carefully inspected for mold, as many specimens that are past their prime can harbor molds that can be harmful. The pore surface should be bright white at harvest; specimens with a darkened or moldy pore surface should be avoided.

Softer varieties such as G. Ganoderma mushrooms can also be pulled off of their substrate and trimmed with a sharp pair of scissors. People taking medications should curtiisi their physician before consuming Ganodermas such as reishi as there have been reports of elevated liver enzymes when reishi is combined with certain medications. Some people may have a reaction that causes a skin rash, but this disappears when use is discontinued. Stomach upset is another possible side effect.


Reishi will keep fresh for at least days under refrigeration.

These mushrooms stored in a paper bag rather than plastic bags. The most common method of storage is drying.

Ganodermataceae : Ganoderma curtisii – Lacquered Bracket

The mushrooms will dry much quicker if sliced into strips, but harder varieties, such as G. Slicing also provides an opportunity to inspect the mushrooms for bugs that have burrowed inside.

Drying should be performed at low temperatures with lots of airflow; higher temperatures will cause the internal flesh to ferment and produce a fishy odor. Once dried they should be sealed in glass jars, vacuum sealed, gahoderma stored in ziplock bags. The Polyporaceae of North America: Ganoderma Diseases of Perennial Crops. Cjrtisii of the Michigan Academy of Science, Volume 7 http: If you harvest, eat or sell mushrooms you find, you are doing so at your own risk.

Mushroom Observer: Observation Ganoderma curtisii group

Curtusii every effort has been made to ensure that the information contained on this site is correct, the authors and the Midwest American Mycological Information corp. MAMI caution against the use of the information in any particular application and accept no responsibility or liability for errors, omissions or representations, expressed or implied, contained herein.

Neither the authors nor MAMI accepts responsibility or liability for errors the reader might make in identifying mushrooms, for harmful reactions to eating poisonous mushrooms, or for idiosyncratic reactions to eating any mushrooms.

Midwest American Mycological Cjrtisii.