Marsilea ancylopoda A.Braun
Descripción
Differs from Marsilea mollis by: rhizomes with short nodal shoots, dark red to black, apices with rusty hairs, glabrate be neath; land fronds with glabrous stipes, leaflets covered with nonoverlapping hairs or glabrous; abaxial intercostal striae irregularly distributed or absent; sporocarps solitary, on spreading or retrorse peduncles often hooked near the apices, rectangular to round in lateral view, lateral ribs none, covered with shaggy pelt of white to fulvous hairs, sometimes glabrate, (2.5–)4–6 X (2–)2.5–5 mm, 2.1–3.2 mm thick, superior tooth a broad bump 0.1 mm high.A
Ejemplar revisado
Jal (Lott et al. 3321, CAS, MO; Lott 3987, CAS, MO, UC, UCR; McVaugh 26057, CAS, IEB, MO). Mich (Díaz Barriga 6422, IEB). Nay (Jones 23510, MO, UC; Murray & Johnson 1458, MICH, NY, UC).
Unverified, Doubtful, or Mistaken Reports. Chih (Spellenberg 9557, MEXU, NMC, NY, cited by Spellenberg et al., 1996; the specimen is vegetative, and possibly M. vestita, as annotated by Yatskievych in 1996). Qro (Rzedowski 48832, 48589, both IEB, cited by Pérez-García et al., 1999, but not verified). Tab (reported by Magaña, 1992, but not verified and possibly based on a misidentification).
A
Unverified, Doubtful, or Mistaken Reports. Chih (Spellenberg 9557, MEXU, NMC, NY, cited by Spellenberg et al., 1996; the specimen is vegetative, and possibly M. vestita, as annotated by Yatskievych in 1996). Qro (Rzedowski 48832, 48589, both IEB, cited by Pérez-García et al., 1999, but not verified). Tab (reported by Magaña, 1992, but not verified and possibly based on a misidentification).
A
Elevación
0 – 2400 mA
Ecología y Hábitat
Dense clay substrates on the borders of temporary ponds and ditches in otherwise arid regions.A
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Marsilea ancylopoda produces sporocarps throughout the year, perennating solely by sporocarps. The distinctive recurved peduncle with the sporocarps developing and maturing underground is unique among New World marsileas. The broad virtually glabrous leaflets and pelt of appressed reddish hairs on the sporocarps are also characteristic.A