A new species of Cintractiella (Ustilaginales) from the volcanic island of Kosrae, Caroline Islands, Micronesia

By

Aime, M. Catherine
Kijpornyongpan, Teeratas
Abbasi, Mehrdad
Wood, Kenneth Richard, 1953-
Flynn, Tim

Type

Article

Date of Publication

2018

Original Publication

MycoKeys

Volume

42

Pages

1-6

Subjects

1 new taxon , Biodiversity , phytopathogens , sedges , South Pacific , Ustilaginomycotina

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.42.27231

 

Abstract

Cintractiella is an unusual genus of smut fungi containing two described species that produce sori as adventitious gall-like spikelets on members of tribe Hypolytreae (subfam. Mapanioideae, Cyperaceae). In September 200, during a botanical expedition on the volcanic island of Kosrae located in the eastern Caroline Islands and within the Federated States of Micronesia, a specimen of Mapaniapacifica was collected displaying Cintractiella-like sori in adventitious spikelets on the host leaves. Sori were hypophyllous, occurring in groups of spikelets composed of olivaceous-brown scale-like leaves, 1–1.5 mm wide and up to 6 mm long. Microscopic comparison with the protologue and drawings of the type material of C.lamii show several differences in teliospore and sori characters between it and the newly collected material on Mapania. To our knowledge, this represents only the second known collection of any member of Cintractiella on vegetative organs of Hypolytreae and a third species for this genus and the only known smut species infecting Mapania, herein described as Cintractiellakosraensissp. nov.