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Novelties in Lindsaea Dryand. ex Sm. (Lindsaeaceae) from South America

2017; University of Málaga; Issue: 42 Linguagem: Inglês

2340-5074

Alexander F. Rojas-Alvarado,

Botany, Ecology, and Taxonomy Studies

espanolEn este articulo se describen e ilustran tres especies nuevas de Lindsaea Dryand. ex Sm. para Suramerica: L. falcatosora A. Rojas, L. nana A. Rojas y L. trapezoidalis A. Rojas. La primera especie difiere de L. pleioptera Kramer por sus pinnas falcadas (en frondas 1-pinnadas) o pinnulas (en frondas 2-pinnadas), con soro falcado restringido a 2/3 basales, o ausente en 1/3 apical donde la lamina es dentada. La segunda especie difiere de L. falcata Dryand. por frondas mas pequenas (4.5–8 × 1.7–2.6 cm vs. 10–25 × 4–7.5 cm), pinnas perpendiculares a ligeramente ascendentes (vs. falcadas) y segmento apical subconforme (vs. conforme), deltado (vs. hastado). La tercera especie difiere de L. taeniata Kramer por sus estipites and raquises angulados (vs. teretes) y pinnulas proporcionalmente m as corta s (2-3.5 veces m as largas que ancha s vs. al menos 5 veces m as largas que ancha s). Tambien tres variedas son combinadas como especies. EnglishIn this paper three new species of Lindsaea Dryand. ex Sm. are described and illustrated from South America: falcatosora A. Rojas, L. nana A. Rojas and L. trapezoidalis A. Rojas. The first species differ from L. pleioptera Kramer by its falcate pinnae (in 1-pinnate fronds) or pinnules (in 2-pinnate fronds) with falcate sori restricted to 2/3 basal, or absent in 1/3 apical where the blade is dentate. The second species differ from L. falcata Dryand. by its smaller blades (4.5–8 × 1.7–2.6 cm vs. 10–25 × 4–7.5 cm), pinnae perpendicular to slightly ascending (vs. falcate) and apical segment subconform (vs. conform), deltate (vs. hastate). The third species differ from L. taeniata Kramer by its angulate (vs. terete) stipe and rachises and proportionally shorter (2-3.5 times longer than wide vs. at least 5 times longer than wide) pinnules. Also three varietals are combined as species