Cheilolejeunea filiformis var. wallisii (Prantl) Ye et al. (2015: 325)

Gil-Novoa, Jorge Enrique & Costa, Denise Pinheiro, 2023, Synopsis of the species of Cheilolejeunea (Marchantiophyta, Lejeuneaceae) in the Pacific dominion and Páramo province of tropical America, Phytotaxa 587 (2), pp. 73-120 : 94

11.3. Cheilolejeunea filiformis var. wallisii (Prantl) Ye et al. (2015: 325) .—

Lejeunea wallisii Prantl (1892: 19) .

Type:— COLOMBIA (Nova Granada). Antioquia, Páramo de Sonson, 10000 ft., 1872, G. Wallis s.n. (holotype G-61044).

Plants light brown to almost yellowish, 0.5–1.0 mm wide. Stems in cross section 110–140 µm in diameter. Ventral merophytes 6–8 cells wide. Leaves subimbricate to imbricate, ovate to elongate, generally flat, 130–160 × 120–135 µm; margin entire, apex rounded; cells orbicular to hexagonal, trigones generally conspicuous; basal cells 20–40 × 10–25 µm, median cells 18–30 × 12–25 µm, marginal cells 8–15 × 8–12 µm, smooth to strongly mammillose on the dorsal side. Lobules trapezoid, 1/4–1/3 of leaf length, free margin flat to involute. Underleaves imbricate, orbicular to ovate, generally longer than wide 530–650 × 600–800 µm, 6× stem width, margin fully entire, insertion depth in U-shaped. Dioicous. Androecia small, on the main stem and branches. Perianth with 5 keels, beak short or absent. Vegetative reproduction unknown.

Distribution and habitat: — Mexico and the northern Andes ( Bastos & Gradstein 2020). In the study area is found growing on tree trunks and branches, in lower and upper montane rainforests, between 1900–3000 m (Gradstein 2021), in the Magdalena and Cauca provinces of Pacific dominion. The record of C. filiformis var. wallisii occurring in the Páramo ( Fig. 9 ), actually belongs to the Cauca province.

Notes: —The species differs from the two other varieties of C. filiformis by perianths with five keels.

Specimens examined:— COLOMBIA. Cundinamarca: Páramo de Guasca , 4°50’51”N, 73°47’30” W, AguirreC 1856 ( COL) .

Figures

FIGURE 9. Distribution of Cheilolejeunea filiformis var. filiformis, C. filiformis var. platycoleus, C. filiformis var. wallissi and C. fragrantissima in Pacific dominion and Páramo province