Name: Rhodofomes cajanderi (P. Karst.) B.K. Cui, M.L. Han & Y.C. Dai
Most Confident Observations:
Copyright © 2007 Darvin DeShazer (darv)
Copyright © 2007 Darvin DeShazer (darv)
Copyright © 2001 Nathan Wilson (nathan)
Copyright © 2008 Mike Potts
Version: 7
Previous Version 

First person to use this name on MO: Michael Wood
Editors: Joseph D. Cohen, Chaelthomas


Rank: Species

Status: Accepted

Name: Rhodofomes cajanderi

ICN Identifier: missing

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Author: (P. Karst.) B.K. Cui, M.L. Han & Y.C. Dai

Citation: Fungal Diversity 80: 364 (2016)

Deprecated Synonyms: Fomitopsis cajanderi (P. Karst.) Kotl. & Pouzar

Misspellings: Rhodofomes cajenderi


Domain: Eukarya

Kingdom: Fungi

Class: Agaricomycetes

Order: Polyporales

Family: Fomitopsidaceae

Genus: Rhodofomes

Notes on Taxonomy: [Edit]

Registration Identifier: [#812657]: IF, MB

Han, M.-L. , Chen, Y.-Y. , Shen, L.L., Song, J., Vlasák, J., Dai, Y.-C. & Cui, B.-K. . (2016). Taxonomy and phylogeny of the brown-rot fungi: Fomitopsis and its related genera. Fungal Diversity: 1-31.

Literature :
Ryvarden, L.; Gilbertson, R.L. 1993. European polypores. Part 1. Synopsis Fungorum. 6:1-387

Page number : 257

Remarks (public) : We have examined specimens collected from Cedrus in Morocco and are convinced that they represent Fomitopsis cajanderi. Mating experiments are needed to verify the conclusions based on microscopical comparisons.

Description type : Non-original description
Description : Fomitopsis cajanderi (Karst.) Kotl. et Pouz. – Ceska Mykol. 11:157. 1957. – Fomes cajanderi Karst., Finska Vet-Soc. À–fv. Forh. 46(11):8, 1904. – Ungulina substratosa Malencon, Bull. Soc. Mycol. Fr. 55:311, 1956.

Basidiocarp perennial, sessile to effused-reflexed or occasionally resupinate. solitary or imbricate, up to 20×7×10 cm; upper surface light brown to pale pinkish in young specimens, darkening to pinkish brown or gray to blackish with age, tomentose to fibrillose or glabrous; pore surface rose coloured. the pores circular to angular, with thick, entire dissepiments. 4-5 per mm; context corky, light pinkish brown, azonate, up to 1 cm thick, tube layers stratified. paler than the context, up to 2 cm thick.

Hyphal system dimitic; contextual generative hyphae thin-walled, with clamps, hyaline. 2-4 µm in diam; contextual skeletal hyphae pale brown in KOH, rarely branched. non-septate. thick-walled, 2.5-6 µm in diam.

Cystidioles fusoid, thin-walled, not projecting. 15-20 × 3.5-5 µm, with a basal clamp. Basidia clavate, 4-sterigmate, 14-23 × 4-6 µm, with a basal clamp.
Basidiospores allantoid, hyaline.smooth, negative in Melzer’s reagent, 5-7 × 1.5-2 µm. Type of rot. Brown cubical rot of dead conifers, negative in gum guaiac solution.

Cultural characteristics. See Campbell 1938 (as Fomes subroseus); Nobles 1948 (as Fomes subroseus), 1958, 1965; Baxter 1951 (as F. subroseus); Stalpers 1978.
Sexuality. Heterothallic and bipolar (Mounce and Macrae 1937, Neuhauser and Gilbertson, 1971).

Substrata. In Morocco collected on Cedrus atlanticus and in Europe known from Picea abies. In North America known from numerous genera of conifers. rarely on hardwoods including Populus tremuloides, Betula spp. and Prunus spp. Reported by Zeller (1926) to cause a heartrot of stone fruit trees and Baxter (1951, as F. subroseus) to cause a heartrot in living junipers and Chamaecyparis thyoides.

Distribution. In Europe reported only from Italy (Bernicchia 1990:196), and specimens have been examined from Morocco collected by Malencon (The type of U. substratosa has not been available). Widely distributed in the forest regions from Mongolia, Eastern Siberia in Russia, Japan and North America.…;

Literature :
Carranza-Morse, J.; Gilbertson, R.L. 1986. Taxonomy of the Fomitopsis rosea complex (Aphyllophorales, Polyporaceae). Mycotaxon. 25(2):469-486

Page number : 472
Description type : Non-original description
Description : FOMITOPSIS CAJANDERI (Karst.) Kotl. & Pouz. Ceska Mykol. 9:157, 1957.
Fomes cajanderi Karst., Fenska Vet.-Soc. Ofv. Forh. 46(11):8, 1904. Trametes subrosea Weir, Rhodora, 25:217, 1923. Fomes subrosea Overh., Penn. Agr. Exp. Sta. Tech. Bull. 316, 1935. Fomitopsis subrosea (Weir) Bond. & Sing., Ann. Mykol. 39:55, 1941. Trametes carnea Amer. aut., not T. carnea (Blume & Nees) Wettstein. Trametes roseo-zonata Lloyd, Mykol. Writ. 7:1144, f. 2182, 1922.
Basidiocarps annual, biennial or perennial, solitary or imbricate, sessile or effused-re flexed, coriaceous, corky, hard to rigid when dry; pileus applanate, conchate, pinkish brown, pinkish red or pinkish gray, darker close to the base, 1.6-17.0 × 1.1-13.5 × 0.1-4.5 cm, with a decurrent part up to 1.5 cm; upper surface finely velvety tomentose, becoming radially appressed fibrilloserugulose to nearly glabrous when old, zonate, striate, sulcate, sometimes rough with minute tufts of short erect hairs, with protuberances or a hard brownish pink or black crust; margin light brown or pinkish, thin or thick, acute, entire, rounded or dentate; pore surface pinkish brown to reddish brown in age; pores slightly angular, round, 3.0-5.0 (-7.0) per mm, dissepiments entire; tubes concolorous with the pores, distinctly stratified, fibrillose, to corky, up to 12 mm long, 1-4 mm long each season, old tubes stuffed with white mycelium, sometimes with a dark line separating the tubes from the context; context indistinctly zonate with darker zones, concolorous, lighter or darker than the tubes, up to 1.5 cm thick, whitish pink, corky to fibrous, with a black reaction when touched with KOH.
Hyphal system trimitic; generative hyphae hyaline, with clamps, thin-walled, branching at or near the septa or unbranched, (1.5) 2.0-5.0 µm in diam; skeletal hyphae thick-walled, yellowish brown, nonseptate, (1.5) 2.0-6.0 µm in diam; binding hyphae thick-walled, hyaline, nonseptate, 2.0-4.0 µm in diam.
Cystidioles fusoid, 12.5-14.5 × 3.0-4.0 µm.
Basidia clavate or subclavate, 4-sterigmate, 12.0-20.0 (-25.0) x 4.0-6.0 µm, with a basal clamp.
Basidiospores smooth-walled, hyaline, allantoid, apiculate, 4.0-8.0 × 1.5-2.5 µm, negative in Melzer’s reagent.
Type of rot: Brown cubical rot.
Substrata: On hardwood and conifer trees, mainly on conifers. Reported on Betulaceae; Salicaceae; Rosaceae; Ericaceae; Fagaceae; Pinaceae; Cupressaceae.
Distribution: Widely distributed in North America; Caribbean Islands; Asia; Europe and Russia.…;

Literature :
Niemelä, T. 1985. Mycoflora of Poste-de-la-Baleine, Northern Quebec. Polypores and the Hymenochaetales. Naturaliste Canadien. 112:445-472

Page number : 456
Remarks (internal) : The young stages of F. cajanderi are almost indistinguishable from those of F. rosea. The former has somewhat brighter colours, but the difference is not great; the pores are almost similar. Old stages differ more clearly, F. cajanderi staying thin and acute-edged, while the other becomes hoof-shaped and has a blunt margin. The upper surface of the former stays brown, bleaches greyish white and has no crust, while F. rosea becomes finally black and develops a cracking crust. The skeletals are different (see under F. rosea), but the most reliable difference is the spore shape and thickness. These species were compared thoroughly by Mounce & Macrae (1937) and Overholts (1953) has discussed their differences and ecology. F. cajanderi is a beautiful polypore, often forming rosette-like groups on tall, axe-cut spruce stump tops.
Description type : Non-original description
Description : Fomitopsis cajanderi (Karst.) Kotl. & Pouz.
Fomes subroseus (Weir) Humphr. & Sigg.
Annual or perennial; fruit bodies pileate or effused-reflexed, solitary or imbricate, at first obtuse, later shelf-like, 2-5 cm wide (compound fruit bodies wider still), 4-20 mm thick at base, projecting 1-3 cm from the substrate; surface even, or rough with radial streaks, at first pale peach, finally bay or umber with a lighter undertone; margin acute, pink. Pores bright pink, round, 4-5(-6) per mm. All colours fading to light grey by winter; freshly growing margin and pore surface turning rust in bruised parts. Ditrimitic, generative hyphae withclamp connections, scarce; skeletal hyphae dominating in all parts, pink, rather thick-walled; binding hyphae (or terminal branches of skeletals) reminding of the skeletals but being subsolid, narrower, branched; spores cylindric, arcuate, (5.3-)5.8-6(-6.2) x 1.8-2.1 µm, IKI-, CB-.
Causes brown-rot on Picea glauca and P. mariana, saprophytic on stumps and fallen trunks, emerging from decorticated parts, mostly from deep cracks in the wood. Both in shady, moist growth sites and in lichen woodlands. Not rare.…;

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