Colura rhynchophora Jovet-Ast

Oliveira-Da-Silva, Fúvio Rubens, Gradstein, S. Robbert, Viana, Pedro Lage, G., Carlos Ernesto, Schaefer, R. & Ilkiu-Borges, Anna Luiza, 2022, Bryophytes from Uei tepui (Serra do Sol), with liverworts new to Brazil and the description of Leptoscyphus incisus sp. nov., Cryptogamie, Bryologie 20 (4), pp. 51-64 : 58

*** Colura rhynchophora Jovet-Ast

( Fig. 3 H-L)

SPECIMEN EXAMINED. — Uei tepui, Bonnetia woodland, on leaves of Orectanthe ptaritepuiana (Steyerm.) Maguire , 5°01’30”N, 60°36’45”W, alt. 2103 m, Viana et al. 6260.

REMARKS

Colura rhynchophora is a rare species reported from Guadeloupe ( Jovet-Ast 1953), Dominica ( Eggers et al. 1998; Schäfer-Verwimp 1999) and Guyana ( Gradstein & Florschütz-de Waard 1989; Gradstein & Hekking 1989). It grows on leaves and dead wood usually in rainforest at 500- 900 m. This species is distinguished by large leaves (1.7-2.2 mm) ending in a longly cylindric horn, as well as by long-rectangular cells of the sac and perianths tipped by five very short, erect horns ( Jovet-Ast 1953).

Figures

FIG. 3. — Liverworts new to Brazil. A-G, Frullania mirabilis J.B.Jack & Steph: A, leaf on stem, dorsal view; B, leaf on stem, ventral view; C, flattened leaf, dorsal view; D, lobules with appendix; E, appendix of lobule; F, lobule without appendix; G, underleaf. H-L, Colura rhynchophora Jovet-Ast: H, sector of a stem with perianth; I, apex of a perianth keel; J, leaf; K, valve; L, base of valve. A-G from Viana et al. 6273; H-L from Viana et al. 6260. Scale bars: A-C, G, H, J, 250 µm; D, E, 100 µm; F, I, K, L, 50 µm.