Colura inuii Horik.

Sarimi, Muhammad Syafiq, Pócs, Tamás & Lee, Gaik Ee, 2021, Data to the Malaysian liverwort flora, III: New Lejeuneaceae records from Sabah and Peninsular Malaysia, Cryptogamie, Bryologie 20 (19), pp. 249-267 : 254-255

* Colura inuii Horik.

( Figs 11A, B ; 12 )

Journal of Science of Hiroshima University, Series B, Division 2,

Botany 1: 68 (1931).

SPECIMEN EXAMINED. — Malaysia. Terengganu: Mt. Tebu Forest Reserve, 15 km S of Jerteh town. Primary lowland dipterocarp forest with small waterfalls and slow stream. Along the forest trail at the Lata Belatan Recreational Forest and waterfall, situated at the base of Mt. Tebu at 80 m alt., on living leaves, 16.IV.2019, G.E. Lee et al. 19018, 19019, 19020, 19021, ibid., 13.III.2021, G.E. Lee 21008, 21009, 21010, 21011, 21012.

REMARKS

Colura inuii is very similar to the widespread Indopacific C. conica (see Zhu & So 2001) but in the latter species, the sac always has a crested, toothed apiculus whereas in C. inuii , it

does not occur. The perianth keels of C. conica have 1-3 celled sharp teeth at the end of the wings (Jovet-Ast 1953, fig. 51: 1-3) whereas in C. inuii , the perianth keels are often strongly mamillose but teeth are never produced. Moreover, the oil bodies are homogenous (smooth externally, rarely segmented into indistinct granules) in C. inuii while granular (faintly rough externally) in C. conica (seeYang et al. 2013: figs 2g, 3e). Furthermore, both species can be distinguished by the presence of 18-20 median valve cells and 17-19 surrounding hyaline cells in C. inuii while 13-17 and 15-16 in C. conica . Colura inuii was known from China (Taiwan), Japan and Vietnam ( Horikawa 1931; Zhu & So 2001; Shu et al. 2017). New to Malaysia, which record in Peninsular Malaysia represents its southernmost locality, extending to the Malesian region. The species usually grows on living leaves, rarely on bark and can be considered, as typical epiphyll; in Malaysia it was found on living and dry fallen leaves in a lowland dipterocarp forest and also in montane forest, above 750 m alt.

Figures

FIG. 11. — Colura inuii Horik.: A, habit; B, oil bodies. From G.E.Lee 21010. Colura ari (Steph.) Steph.: C, habit; D, oil bodies. From G.E. Lee et al. 19020. Radula grandilobula Promma & Chantanaorr.: E, habit; F, oil bodies. From G.E. Lee 21003. Scale bars: A, C, E, 2 mm; B, D, 50 µm; F, 25 µm.

FIG. 12. — Colura inuii Horik.: A, part of plant and perianth in ventral view; B, C, leaves; D, cross-section of stem; E, underleaf; F, oil bodies; G, marginal leaf lobe cells; H, L, valves; I, median leaf lobe cells; J, K, apex of lobule sacs; M, N, perianths and female bracts. A, E, G, D from G.E. Lee et al. 19019; others from G.E. Lee 21011. Scale bars: A-C, 0.5 mm; D, G, H, L, 50 µm; E, I-K, 100 µm.