Cheilolejeunea adnata var. autoica Gradstein & Ilkiu-Borges 2009
Creators: name: Gil-Novoa, Jorge Enrique
name: Costa, Denise Pinheiro
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Marchantiophyta
Jungermanniopsida
Porellales
Lejeuneaceae
Cheilolejeunea
Cheilolejeunea adnata
Cheilolejeunea adnata var. autoica gradstein &amp; ilkiu-Borges (2009: 64)

description: 2.2. Cheilolejeunea adnata var. autoica Gradstein & Ilkiu-Borges (2009: 64).
Type:— FRENCH GUIANA. Sa ̧l, 53°11’W, 3°7’N, trail 3 in lowland rainforest, 200–400 m, on rotten log in much light, 26 June 1986, J.M. Bekker 2233-1 (holotype GOET).— Fig. 2N–V. Cheilolejeunea larsenii Mizutani (in Hattori & Mizutani 1969: 95), syn. fide Bastos & Gradstein (2020)
Plants dark brown to yellowish brown, 0.5–1.3 mm wide. Stems in cross section 60–110 µm in diameter, 7–8 epidermal cells in cross section, 16–30 × 12–18 µm; 9–10 medullary cells, 8–15 × 7–12 µm. Ventral merophytes 2 cells wide. Leaves imbricate, orbicular to ovate, fully flat, 440–680 × 340–500 µm; margin entire, apex rounded; cells smooth, inconspicuous trigones, intermediate thickenings frequent; basal cells ovate 25–35 × 18–30 µm, median cells 18–32 × 17–25 µm, marginal cells 11–15 × 6–9 µm. Lobules 1/5–1/4 the length of the lobe, bottle-shaped, free margin strongly involute, keel straight to slightly arched, apex with a tooth formed by one long and acute cell. Underleaves distant, suborbicular, 1.5–2.5 x wider than the stem, 220–270 × 170–240 µm, bifid to 1/3–1/2, with a V-shaped sinus, margin entire, base cuneate. Autoicous. Androecia terminal on short or long branch, 3–6 pairs of bracts globose. Gynoecia on short or long branch, without innovations, bracts oblong-obovate, 450 × 330 µm, apex rounded; bracteole oblong-obovate 480 × 250µm, margin entire, bilobed ca. 2/5 its length. Perianth with 4–5 keels, beak short. Vegetative reproduction unknown.
Distribution and habitat:—Pantropical, occurring in Venezuela, Guyana, Brazil (Bastos 2017), Central and South Africa, India, and Southeast Asia (Shu et al. 2015); recorded here as new to Panamá. In the study area, the species has been reported for the Puntarenas-Chiriquí province of Pacific dominion, growing in lower montane rainforest, between 1100–2390 m. The record of C. adnata var. autoica occurring in the Páramo (Fig. 3), actually belongs to the Guajira province.
Notes:—The variety is very similar to var. adnata, but differs by the absence of caducous leaves and autoicous sexuality. It was initially described by Gradstein & Ilkiu-Borges (2009) and elevated to species level by Shu et al. (2015) and synonymous with C. larsenii, a species described from Thailand. Bastos & Gradstein (2020) again reduced it to varietal level, as they did not consider the differences with C. adnata sufficient for C. larsenii to be recognized as a different species.
Specimens examined:— BRAZIL. São Paulo: Ubatuba, 16 February 2004, Yano et al. 26946 (SP). Pernambuco: Cabo, 14 November 1984, Yano & Porto 9180 (SP). Espírito Santo: Santa Tereza, 23 November 1982, Yano et al. 4911 (SP). PANAMÁ. Chiriquí: Boquete, 3 September 1940, Svilha 425 (NY). VENEZUELA. Táchira: Parque Nacional El Tamá, 02 March 1976, Schuster & Ruiz-Terán 76-2294 (F).
description: Published as part of 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, pp. 73-120 in Phytotaxa 587 (2) on pages 82-83, DOI: 10.11646/phytotaxa.587.2.1, http://zenodo.org/record/7731813