DRYOPTERIS LIJIANXIUII (DRYOPTERIDACEAE), A NEW SPECIES FROM CHINA

Dryopteris lijianxiuii X. J. Li, a new species of Dryopteris Adans. from Shandong, China, is described and illustrated. It is closer to D. lacera (Thunb.) O. Kuntze for its morphological and palynological characters of LM and SEM studies but differs by a number of characters, such as, the leaves rectangular roundlanceolate, apex acuminate, and without narrow sharply; sori ornamented in the upper or middle part of 1-3 pairs of pinnaes at the base of the leaf, and densely covered with the upper and middle pinnaes back; spore perispore with tuberculiform-rugulate protrusions, and surfaces with melting ice and snow ornamentation. The sp. nov. is described with LM and SEM characters of spore and fronds, compared with that of D. lacera (Thunb.) O. Kuntze and provided with photographs.

Automated summary

Dryopteris lijianxiuii X. J. Li, a new species from Shandong, China, is described and illustrated in this study. It shares morphological similarities with D. lacera but differs in several characters, such as the shape of leaves and location of sori. The new species is characterized by LM and SEM studies of spore and fronds, compared with D. lacera and illustrated with photographs.