Cirsosia humboldtigena sp. nov. (Lembosiaceae, Ascomycetes) on Humboldtia vahliana from Kerala, India

Abstract

The plant genus Humboldtia contains six species of which five are endemic to Peninsular India. Of these, Humboldtia vahliana was found to be infected with a new species of the genus Cirsosia. Cirsosia humboldtigena sp. nov. is described and illustrated in detail to provide a consolidated account of the species known on this host genus.