Pseudolycopodiella Holub. Carolina Bog Clubmoss.
A genus of about 12 or more species, sub-cosmopolitan, but especially tropical and subtropical. This group has often been treated as section of Lycopodium (or of Lycopodiella); it appears to warrant status as a genus separate from Lycopodiella (Øllgaard, Kessler, & Smith 2018). In addition to the morphologic distinctions, the "Pseudolycopodiella group" has considerable anatomical differences, a different base chromosome number than Lycopodiella (x = 35 vs. x = 78), and does not hybridize with Lycopodiella (Wagner & Beitel 1992). Øllgaard in Kramer & Green (1990) and Wikström & Kenrick (2000) retained it as Lycopodiella section Carolinianae.
ID notes: In contrast to most Lycopodiella species, Pseudolycopodiella caroliniana and, to a lesser degree, L. prostrata, are dorsiventrally flattened (or "pseudodistichous"), but it seems that juvenile sprouts of all species are somewhat flattened.
Ref: Cook (2015); Haines (2003a); Øllgaard In Kramer & Green (1990); Wagner & Beitel (1993) In Flora of North America Editorial Committee (1993b); Wikström & Kenrick (2000); Zhang & Iwatsuki in FoC (2013). Show full citations.
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© Bruce A. Sorrie