Which plant has more species, Zigadenus or Fallopia?
Zigadenus Zigadenus is a genus of flowering plants now containing only one species, Zigadenus glaberrimus, the sandbog death camas, found in the southeastern United States from Mississippi to Virginia. Around 20 species were formerly included in the genus, but have now been moved to other genera.
Taxodium Taxodium is a genus of one to three species (depending on taxonomic opinion) of extremely flood-tolerant conifers in the cypress family, Cupressaceae. The generic name is derived from the Latin word "taxus", meaning "yew", and the Greek word "εἶδος" ("eidos"), meaning "similar to." Within the family, "Taxodium" is most closely related to Chinese swamp cypress ("Glyptostrobus pensilis") and sugi ("Cryptomeria japonica").