Gymnopus fuscotramus (Agaricales), a new species from southern China

Abstract

-A new species, Gymnopus fuscotramus, is described from China. It is characterized by brown-incarnate colors in pileus and lamellae, sulcate pileus, free and distant lamellae, floccose-squamulose, mostly black stipe, well-developed black rhizomorphs, repent and diverticulate pileipellis hyphae, abundant clamp connections, diverticulate to coralloid cheilocystidia, moderately thick-walled caulocystidia with obtuse apex, dextrinoid hyphae in cortex of stipe, and gray-brown pileal and hymenophoral trama. Color images of basidiomata and microscopic elements accompany the description. Gymnopus fuscotramus is compared with similar species and its systematic position is also inferred using the ITS rDNA sequence data.

Emending Gymnopus sect. Gymnopus (Agaricales, Omphalotaceae) by including two new species from southern China

“…Vestipedes [= Marasmiellus fuscotramus (Mešić, Tkalčec & Chun Y. Deng) J.S. Oliveira], has abundant rhizomorphs, larger basidiospores (8.2-9.6 × 3.7-4.4), and pale grey-brown lamellar and pileus trama (Mešić et al 2011); G. pubipes, sect. Levipedes, has deeply emarginate to adnexed lamellae and an entirely pubescent stipe with numerous caulocystidia (Antonín and Noordeloos 2010); and G. volkertii has a umbonate and estriate pileus, adnexed lamellae, and larger basidiospores (8.2-9.6 × 3.7-4.4 μm), growing on lawn (Murrill 1916).…”

Studies of two Corner types (Marasmius nigroimplicatus and M. subrigidichorda) and new Gymnopus combinations

“…-max.). Comparison of G. nigroimplicatus and G. subrigidichorda with similar species is based on descriptions and illustrations in the following literature: Petch 1948, Singer 1965, 1969, 1976, Pegler 1986, Corner 1996, Antonín 2007, Mešić et al 2011.…”

“…During the process of describing the new species, Gymnopus fuscotramus Mešić et al (Mešić et al 2011), we studied types of two similar species described by Corner (1996), Marasmius nigroimplicatus and M. subrigidichorda, known only from their type localities in Singapore. In this paper we give detailed species descriptions, as well as color photographs of their dried basidiomata and microscopic characters.…”