Pilularia americana A.Braun
Descripción
Plants forming dense clones; rhizomes ca. 1 mm diam.; leaves 1.5–10 cm, sparsely pubescent to glabrescent; sporocarp stalks 1–3 mm long; sporocarps globose, 1.6–2.7 mm diam., covered with matted hairs until mature; raphes (attached portion of sporocarp stalk) very short, lacking teeth; sori 4 per sporocarp; 2n=20 (Arkansas).A
Forma de vida
Hidrófita enraizada, TerrestreA
Ejemplar revisado
BCN (Thorne & Charlton 60050, ENCB; Wiggins 10087, DS, ENCB). Dgo (Taylor & Montgomery s.n., 9 Nov 1997, NY).
A
A
Elevación
300 – 2000 mA
Ecología y Hábitat
In shallow ponds and seasonal pools, also in moist soils in semidisturbed areas and pastures.A
Categoría IUCN
Datos insuficientes (DD)B
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Most likely, this species is more common and widespread in Mexico than the relatively few collections suggest, at least in northwestern Mexico. Because of its inconspicuous and unfernlike appearance, probably it has been overlooked by collectors.A