Denotarisia linguifolia (De Not.) Grolle

Pócs, Tamás, 2023, New records for the liverwort and hornwort flora of Vietnam 2. Bazzania Gray and some other collections of Pierre Tixier in the National Museum of Natural History, France, Cryptogamie, Bryologie 20 (9), pp. 197-210 : 208

Denotarisia linguifolia (De Not.) Grolle

( Fig. 5C, D )

SPECIMEN EXAMINED. — Vietnam. Lâm Đồng, piste de Dalao , sur bois en forêt dense, 900 m, Tixier 403 ( PC [ PC0764731 , PC0764733 ]).

ILLUSTRATIONS. — Kitagawa 1970: 219, fig. 7 (under Jamesoniella pulchra Kitag. ); Grolle 1971: 7, figs 1, 2a-d.

NOTES

This peculiar monotypic genus was separated from Jungermannia by Grolle (1971) on the base of its densely imbricate, strongly concave, succubous leaves. Its dorsal leaf bases very long decurrent.In addition its leaf cells have peculiar bulging trigones inside with a dark, star like pattern. An Indomalesian-Pacific species distributed from Sri Lanka to Tahiti.It grows on twigs and bark of trees in the mountain cloud forest belt. It was published only from one locality in Vietnam before ( Pócs et al. 2019).

Figures

FIG. 5. — Acrolejeunea tjibodensis Grolle & Gradstein:A, habit,ventral view;B, gynoecia, with perianth. Denotarisia ligulifolia (De Not.) Grolle:C, Habit, ventral and lateral view;D, leaf cells.Lepidozia quadridens (Nees) Gottsche et al.: E, habit,ventral view;F, underleaves.Scale bars:A-C,1 mm;D, 50 µm;E, 250 µm;F,100 µm.