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Hackelia
See list of 2 species in this genus-
1a. Mericarps with a single row of glochids on each margin, sometimes with 1–3 (–10) small glochids on the outer surface; intact schizocarp broad-pyramidal; basal leaf blades narrow-ovate to oblanceolate
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1b. Mericarps with 10–25 glochids on the outer surface that are of similar length to the marginal glochids [Fig. 495]; intact schizocarp subglobose; basal leaf blades broad-ovate to cordate-ovate
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Each photo represents one species in this genus.