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Challenges in Taxonomic Identification of Rare and Confused Bryophyte Species in Minnesota

This analysis addresses the taxonomic complexities faced in identifying various bryophyte species in Minnesota. It highlights issues with mislabeled specimens, poor condition of voucher material, and difficulties in differentiating closely-related species based on geographic distribution. Several species, including Frullania selwyniana and Marsupella emarginata, are assessed for their conservation status, revealing a mix of widespread, rare, and vulnerable classifications. The study emphasizes the importance of accurate identification in conservation efforts for these often-overlooked, small-sized plants.

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Challenges in Taxonomic Identification of Rare and Confused Bryophyte Species in Minnesota

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  1. Taxonomic Analysis C? mislabeled or confused D? difficult to differentiate from closely-related common species that do occur in Minnesota G? based on geographic distribution only M? all voucher material is in very poor condition O? overlooked because of its small size P? overlooked because the usual phenon is difficult to differentiate from common species T? the taxon is of questionable taxonomic value

  2. Rabinowitz Analysis

  3. fugitive annual shuttle colonist short-lived shuttle perennial stayer perennial shuttle

  4. endemic & rare Frullania selwyniana: EN Grimmia hermannii: LR(nt)

  5. widespread & rare Atrichum crispum: LR (lc) Schistostega pennata: DD Sphagnum riparium: VU Splachnum rubrum: VU Splachnum ampullaceum: VU Tetraplodon angustatus: LR(lc)

  6. widespread & rare/common Marsupella emarginata(eastern): LR(nt) Tortella inclinata (western): VU

  7. northern/montane disjuncts Cyrtomnium hymenophylloides: LR(lc) Hypnum hamulosum: DD Scapania cuspiduligera: LR(lc)

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