Marsilea deflexa A.Br.
Descripción
Main rhizomes with nodal and internodal roots, internodes 1.5–6.5 cm long, apices with dense, tan hairs, glabrate beneath, rhizomes in aquatic habitats green; land fronds 2–9.3 cm long, stipes terete and glabrate, leaflets 1.1–2 X 0.9–1.7 cm, glabrous to sparsely hairy, lateral margin concave to convex, terminal margin entire; floating leaves 4–18 cm long, stipes terete and glabrous, leaflets 1.4–3.1 X 1.6–2.9 cm, lateral margin straight to convex; abaxial intercostal striae almost always present and uniformly distributed, except for small patch just distal to the pulvinus; fertile leaves in water and on land, bearing 1–4 sporocarps on lower 1⁄4 of stipes; sporocarps rectangular, quadrate in lateral view, with conspicuous lateral ribs, covered with flattened matted hairs, eventually glabrate, brown to purplish black, 3.5–6 X 2–4.5 mm, 1.7–2.8 mm thick, raphe and teeth absent.A
Forma de vida
Hidrófita enraizada, Hidrófita libreA
Ejemplar revisado
Jal (Rzedowski &McVaugh 1331, ENCB). Nay (McVaugh 19287, CAS, IEB, MICH, MO). Oax (Lachica & Sánchez FaI-2118, CAS, ENCB, MEXU). Pue (Bravo-Hollis 523, MEXU). Ver (Ortega O. 583, NY, UC, XAL).
Unverified, Doubtful, or Mistaken Reports. Yuc (Tun G. 544, UADY, cited by Palacios-Rios, 2002b, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Yuc (Tun G. 544, UADY, cited by Palacios-Rios, 2002b, but not verified).
A
Elevación
(in total range). 0 – 1100 mA
Ecología y Hábitat
Aquatic on clay substrates or floating in seasonal ponds, marshes and ditches.A
Tipo de vegetación
Acuática y subacuática. No especificadoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Marsilea deflexa produces sporocarps throughout the year. It does not persist as sporophytes with viable rhizomes through the dry seasons, but new plants are produced each wet season by dehiscence of sporocarps. Hybrids are known between this species and M. polycarpa in (Johnson, 1986). See M. polycarpa for comparison.A