Massarina proprietunicata sp nov., from submerged wood in streams in Hong Kong

Massarina proprietunicata sp. nov., is described and illustrated based on a specimen occurring on submerged wood in the Lam Tsuen River, Hong Kong. It is characterized by verrucose ornamented ascospores bearing a narrow mucil aginous sheath, which is drawn out at the poles to form tapering appendages , with thickened and arrowhead-like tips. Massarina proprietunicata is comp ared with other aquatic Massarina species having ascospores bearing a narro w mucilaginous sheath or polar appendages. Details of morphology are illust rated with interference and scanning electron micrographs.