Diagnosis.

Taxon classification

Fungi

Agaricales

Agaricaceae

Zai-Wei

Jacobs

Adriaana

Vellinga

Else C.

Sysouphanthong

Phongeun

van der Walt

Retha

Lavorato

Carmine

Yi-Feng

Yang

Zhu L.

A multi-gene phylogeny of

Chlorophyllum

(

Agaricaceae

Basidiomycota

): new species, new combination and infrageneric classification

MycoKeys20320182018326590

10.3897/mycokeys.32.23831

Chlorophyllum

sect.

Ellipsoidospororum

823853

Z.W. Ge

sect. nov.

Diagnosis.

Differs from other sections by the slender basidiocarps with furfuraceous squamules on the pileus, the non-pored, ellipsoid basidiospores and subcylindric to slightly fusiform cheilocystidia.

Type.

Chlorophyllum hortense (Murrill) Vellinga, Mycotaxon 83: 416. 2002.

≡ Lepiota hortensis Murrill, N. Amer. Fl. (New York) 10 (1): 59. 1917.

Description.

Basidiocarps agaricoid, small to medium sized, with furfuraceous squamules. Basidiospores ellipsoid to ovoid without germ pore. Cheilocystidia narrowly clavate to subcylindrical. Pileipellis a loose hymeniderm made up of clavate to subfusiform hyphae.

Discussion.

This section is represented by C. hortense, C. demangei and the new taxon C. africanum. Chlorophyllum alborubescens (Hongo) Vellinga, C. humei (Murrill) Vellinga, C. mammillatum (Murrill) Vellinga, C. subfulvidiscum (Murrill) Vellinga, Leucoagaricus bisporus Heinem., which were treated as synonyms of C. hortense (Murrill) Vellinga (Vellinga 2003; Akers and Sundberg 1997) also belong here (Figure 1).

Figure 1.

ML tree inferred from ITS data. Bootstrap values >50 % are indicated at internodes. Names of new taxa are in bold.

Akers

Sundberg

(1997)

Leucoagaricus

hortensis

: some synonyms from Florida and taxonomic observations. Mycotaxon 62: 401–419.