Monoclea gottschei Lindb.

Fernandes, Rozijane Santos, Silva, José Augusto dos Santos, Ottoni, Felipe Polivanov & Pinheiro Costa, Denise, 2021, Diversity of thalloid liverworts in Brazilian Savanna of Parque Nacional da Chapada das Mesas, Maranhão, Brazil, Check List 17 (1), pp. 45-58 : 51

Monoclea gottschei Lindb.

Figure 5A–D

Material examined. BRAZIL Maranhão • Carolina, Complexo Pedra Caída , cachoeira do Santuário ; 07°02′ 44″S, 047°27′01″W; alt. 128 m; 07 Feb. 2020; J. A. S Silva 552 col.; CCAA 2578 . • ibid., J. A. S Silva 557 col.; CCAA 2697 .

Identification. Plants rupicolous. Thallus dark green, 20– 30 × 5–10 mm wide, dichotomous, without central midrib, homogeneous; dorsal surface with chlorophyllose cells and without epidermal pores, densely spotted by whitish or darkish dots (observed in fresh material); air chambers absent; ventral surface with chlorophyllose cells; margins usually crispate-undulate. Sporophyte not seen.

Monoclea gottschei is a large plant, 2–3 cm long, with crispate-undulate margins. This species is sometimes misidentified as Dumortiera hirsuta (Sw.) Nees because it has a green, flattened thallus, without pores and air chambers, and often occurs in the same habitat. Otherwise, M. gottschei differs from D. hirsuta by having whitish dots on the thallus in fresh material and no

ventral bundle of the rhizoid ( Gradstein et al. 2001).

Distribution and ecology. Neotropical ( Gradstein and Costa 2003; Gradstein 2017; Flora do Brasil 2020; GBIF. org 2020). Brazilian biomes and states: Amazonia (Amazonas), Atlantic Forest (Espírito Santo, Minas Gerais, Paraná, Pernambuco, Rio de Janeiro, and São Paulo), and Pampas (Rio Grande do Sul) ( Gradstein and Costa 2003; Flora do Brasil 2020); and Cerrado (Maranhão; new data). We collected this species on shaded rocks near a waterfall.