Synonym: Asterella palmeri (Austin) Underw., Bot. Gaz. 20: 63. 1895.
[Note: Most records currently under this name.]
Pronunciation: As-te-rel-lóp-sis pál-mer-i
Etymology: Gr.aster, star + -ella, diminutive + -opsis, appearing like (so "like Asterella") + eponym, after Palmer SDSU Collection with field images
Asterellopsis palmeri [Asterella palmeri]
Note thallus morphology, with dark margins, and unlobed archegoniophores; compare with Calasterella californica.
Images courtesy of M.G.Simpson, iNat Observation 148259761