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