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Table 2 Host plants and morphological characters of Anthracoidea kenaica and the five most similar species of the section Leiosporae.

From: The identity of Cintractia carpophila var. kenaica: reclassification of a North American smut on Carex micropoda as a distinct species of Anthracoidea

Species Host plant(s) Spores (µm) Wall (µm) Internal swellings Spore ornamentation Mucilaginous sheath References
Anthracoidea elynae 1 Kobresia humilis, K. laxa, K. macrolepis, K. myosuroides, K. schoenoides, K. sibirica, K. (14−)16–22(−25) × (9−) 10–20(−22) 1–2.5(−3) frequent 1–2(−3) weak internal swellings smooth, seldom dotted usually covered by a gelatinous sheath Kukkonen (1963)
  smirnovii (14−)16–22(−26) 2–3 weak but frequent almost smooth, only dotted no data Nannfeldt (1979)
   17–22(−25) × (14−)15–18.5 1–2.5(−3) often with 1–3 weak internal swellings smooth to finely punctate on the flat sides more or less evident hyaline sheath Vánky (1994,
2012)
Anthracoidea externa Carex fliifolia (Carex sect. Filifoliae) 15–22(−23) × 11–20 0.7–2.5 absent absolutely smooth always covered by a gelatinous sheath Kukkonen (1963)
   17–21 × 15–20 0.8–1.5 absent apparently smooth present in most of the spores Vánky (2012)
Anthracoidea kenaica Carex micropoda (Carex sect. Dornera) (14−)15–20(−22) × (11.5−)12–18.5(−20.5) 1–1.5 2–5 distinct internal swellings smooth to very finely punctate in LM, verruculose in SEM rarely enclosed by a thin mucilaginous sheath this study
Anthracoidea macranthae Kobresia macrantha 15–18(−19.5) × 13–17.5 0.5–1 absent smooth hyaline caps common on the flattened side Guo & Wang (2005)
   15–18.5(−20.5) × 13.5–16 1 absent smooth present on the flattened sides and often around the entire spore Vánky (2012)
Anthracoidea nardinae Carex nardina (Carex sect. Nardinae), ?Carex elynoides (Carex sect. Filifoliae) (15−)16–22(−23) × (10−) 11–20(−21) 1–3 always 1–3 more or less clear internal swellings smooth, sometimes obscurely dotted absent, or at most, rare Kukkonen (1963)
   (15−)16–23 × 13–20(−21) ca. 2 1–3 clearly seen almost smooth, only dotted by hardly discernible dots no data Nannfeldt (1979)
   (15−)16–22(−23) × 13–20 (−21) 1.5–2 1–3 more or less clear internal swellings almost smooth or sometimes obscurely punctate no data Vánky (1994, 2012)
Anthracoidea scirpi Trichophorum cespitosum, T. pumilum (16−)17–24(−25) × 12–20 (−23) 1–2.5(−3) absent smooth or rarely very slightly verrucose often covered by a gelatinous sheath Kukkonen (1963)
   17–23 × 14–21 1.5–2 absent smooth or very minutely punctate often covered by gelatinous sheaths on the flattened sides Vánky (1994, 2012)
  1. 1 Host plants taken from Vánky (2012), but at least some of them may harbour different Anthracoidea species.