Fungalpedia – Note 56 Kalapuya


Kalapuya M.J. Trappe, Trappe & Bonito

Citation if using this entry: Fallahi et al. (2023) New genera in 2010-2011. Mycosphere (in prep)

Index Fungorum, FacesoffungiMycoBankGenBank, Fig 1.

The monotypic truffle genus Kalapuya was described by Trappe et al. (2010) in Morchellaceae (Pezizales). The genus was known only from the Pacific northwestern United States with Kalapuya brunneaas the type species. It was found in Douglas-fir forests on the west slope of the Cascade Range in Oregon and in the Coastal Ranges of Oregon and northern California. It features a firm whitish gleba with a roughened, warty, reddish brown to brown peridium. As the spores mature, the gleba acquires grayish-brown mottling and has a cheesy-garlicky odor. The spores are ellipsoid and smooth, similar to Morchella sppAsci are ellipsoid to globose, nonamyloid, with a forked base, and contain 6–8 spores. The ectal excipulum has rounded to polyhedral cells with warts, and the wall varies in thickness from thin to thick towards the surface and is reddish brown in dH2O. The ental excipulum close to the ectal excipulum of thin-walled cells mixed with thin-walled hyphae, and is hyaline in dH2O (Trappe et al. 2010). 



Fig 1- Macro- and microscopic characters of Kalapuya brunnea (redrawn from Trappe et al. 2010). a Ectal excipulum. b Ental excipulum. c Gleba, cross section. d Stipitate ascus with spores Scale bars: a=50 µm; b, d=20 µm; c= 1 cm. 


Phylogenetic analysis based on LSU rDNA and EF1a placed this new genus in Morchellaceae and distinguished it from other hypogeous genera in the family (Trappe et al. 2010).

Type speciesKalapuya brunnea M.J. Trappe, Trappe & Bonito.



Trappe MJ, Trappe JM, Bonito GM. 2010- Kalapuya brunnea gen. & sp. nov. and its relationship to the other sequestrate genera in Morchellaceae. Mycologia 102, 1058-1065.


Entry by:

Maryam Fallahi, Center of Excellence in Fungal Research, Mae Fah Luang
University, Chiang Rai 57100, Thailand.


(Edited by Kevin D Hyde and Ruvishika S. Jayawardena)