TABLE 1 in Pilularia ethiopica (Pteridophyta, Marsileaceae), a new species of pillwort from the tropical African mountains of Ethiopia

TABLE 1. Morphological and ecological comparisons of the species of Pilularia (after Dostál & Reichstein 1984, Large & Braggins 1989, Daoud-Bouattor et al. 2009, Crouch & Wesley-Smith 2011, Crouch et al. 2011, Troia & Lansdown 2016, Minissale et al. 2017, Léon et al. 2018, Şenol et al. 2021, VicFlora 2023).
P. ethiopicaP. bokkeveldensisP. dracomontanaP. globuliferaP. minutaP. americanaP. novae-hollandiaeFrond length (mm)13–30(–45)up to 19shorter than 1430–10010–50(–70)18–60(–110)25–80Fronds per node1111–511–22–3Circinate vernationobviousnot obviousnot obviousobviousobviousobviousobviousSporocarps at maturitysubterraneanepigealsubterranean, submergedepigealepigealsubterraneanepigealSporocarp diameter (mm)1.8–2.1up to 2.5up to 1.753–50.8–1.52.0–2.72–4Sporocarp pedicel length (mm)0.5–1.0up to 2up to 1.4up to 1(1.0–)2.5–4.01.0–3.72–9Ecologymargin of permanent tarnsseasonal panspermanent sandstone tarnsmargins of ponds and ditchesseasonal pondsvernal pools, margins of shallow pondsshallow swampsAfroalpine grassland, 3460– 3600 mFynbos, 800 mAfromontane grassland, 2130- 2160 mcolline and submontane, below 700 mMediterranean open vegetation, below 300 mriparian open vegetation to alpine grassland, 590–730 m, exceptionally at 4530–4590 m in the Andes-submerged, seasonally exposedsubmerged, seasonally exposedpermanently submergedpartly submerged, seasonally exposedsubmerged, seasonally exposedsubmerged, seasonally exposedsubmerged, seasonally exposed