Calypogeia ceylanica S. Hatt. et Mizut., Candollea 23: 288. 1968.

Bakalin, Vadim A., Klimova, Ksenia G. & Nguyen, Van Sinh, 2020, A review of Calypogeia (Marchantiophyta) in the eastern Sino-Himalaya and Meta-Himalaya based mostly on types, PhytoKeys 153, pp. 111-154 : 111

Calypogeia ceylanica S. Hatt. et Mizut., Candollea 23: 288. 1968. Figures 6F-M , 9E-J

Type.

Sri Lanka. Central Province: Nuwara-Eliya, 1950 m a.s.l., 24-27 February 1954, F. Schmid 10334 (isotype: G [G00064248!]).

Remarks.

Calypogeia ceylanica is known as a taxon restricted to Ceylon (Sri Lanka) and was never recorded for the Sino-Himalaya, although it may be expected in Sikkim, Assam, or even farther. Moreover, some reports of C. muelleriana may actually be based on C. ceylanica . Calypogeia ceylanica differs from C. muelleriana in more deeply divided and narrower underleaves and apiculate to shortly bidentate leaf apices (a feature that very rarely occurs in C. muelleriana ).

The description based on isotype plants is as follows: plants yellowish brownish in herbarium, glistening, translucent, 2.2-3.5 mm wide 3-5 cm long; stem 370-450 µm wide, branching not seen; rhizoids in loose colorless to brownish fascicles, sparse to numerous; leaves obliquely inserted, slightly concave or convex, somewhat turned to ventral side, not or barely decurrent ventrally, obliquely ovate, well developed 560-670 × 450-550 µm, apex acute to (rarely) unclearly and very shortly bidentate; underleaves obliquely spreading, 1.1-1.3 as wide as stem, decurrent for ¼ -1/3 of stem width, divided by V- to U-shaped sinus into two lobes, lateral teeth absent or present and unclear, undivided portion 2-3 cells high; midleaf cells thin-walled, trigones very small to vestigial, 35-80 × 35-58 µm, cuticle smooth.

Figures

Figure 6. Calypogeia goebelii (Schiffn.) Steph.: A plant habit, fragment, ventral view B, C leaves D, E Underleaves Calypogeia ceylanica S. Hatt. et Mizut.: F plant habit, fragment, dorsal view G plant habit, fragment, ventral view H, I, J underleaves K, L, M leaves Calypogeia cuspidata (Steph.) Steph.: N plant habit, fragment, dorsal view O plant habit, fragment, ventral view P underleaf Q leaf Calypogeia japonica Steph. R plant habit, fragment, ventral view S plant habit, fragment, dorsal view T, U, Z, AC, AD, AE, AF underleaves V, W, X, Y, AA, AB leaves. A-E from Syntype G 00115804; F-M isotype G 00064248; N-Q lectotype G 00069713; R-W from Neotype G 00047413 / 9720; X-Z, AE, AF from G 00047412 / 9717; AA-AD from holotype of Calypogeia ovifolia H. Inoue TNS 76048.

Figure 9. Calypogeia asakawana S. Hatt. ex Inoue: A plant habit, fragment, ventral view B, C underleaves D Leaf Calypogeia ceylanica S. Hatt. et Mizut.: E, F leaves H underleaf J leaf middle cells Calypogeia cuspidata (Steph.) Steph. G plant habit, fragment, ventral view I underleaf L leaf M leaf middle cells Calypogeia decurrens (Steph.) Steph.: K plant habit, fragment, ventral view. Scale bars: 2 mm (G); 1 mm (E, F, K); 500 µm (A, D, L); 200 µm (H, I); 100 µm (B, C); 50 µm (J, M). A from Holotype TNS- 174359; B, C, D from authentic material of C. okamurana Steph. nom. herb., G 00067726; E, F, H, J Isotype G 00064248, G, I, L, M from Lectotype G 00069713; K from Isotype G 00060745.