TABLE 1. Comparison among Cyrtomium remotipinnum, C. calcis, C. pachyphyllum, C. shingianum, and C. guizhouense.CharacterC. remotipinnumC. calcisC. pachyphyllumC. shingianumC. guizhouenseShape of larger scales on stipe baselanceolatebroad lanceolate or ovatelanceolate or broad lanceolatelanceolate or broad lanceolateovate or lanceolateColor of scales on stipe basebrownbrownbrownbrown or dark brown at middlebrownLength of fronds (cm)60–87(–99)20–6012–4040–69(23–)42–107Number of lateral pinnae8–15 pairs9–18 pairs3–6 (–8) pairs5–11.5 pairs0–5 pairsSize of middle and lower pinnae (cm)5–8 × 1–22.2–5 × 1.1–2.23.5–5 × 2.5–36–10 × 2–3.712–14(–19.5) × 4–5(–10)Length to width ratio of lateral pinnaemore than 3.5×less than 2.3×less than 2.5×1.5–4×usually less than 3.5×Proximity of lateral pinnaedistantimbricate or closeimbricate or closeapproximate to distantapproximate to distantShape of middle pinnaeoblong-lanceolate, usually straightdeltoid-ovate, often straightdeltoid-ovate, often straigntoblong-ovate, somewhat falcateoblong-lanceolate, slightly falcateApex form of middle pinnaeacuminateacute, or obtuseacute, occasionally obtuseacuminatelong acuminateBase form of middle pinnaecordate, symmetricalcordate, symmetricalcordate, symmetricalshallowly obliquely cordate or subtruncateobliquely cordatePattern of venationareoles 2–3 rows, those along midirb conspicuously larger than othersareoles 2–3 rows, those along midirb conspicuously larger than those of next rowareoles 4 rows, those along midirb slightly larger than those of next rowareoles 2–3 rows, those along midirb slightly larger than those of next rowareoles 7–9 rows, those along midirb as large as those of next rowDistribution of sori2(–3) rows, usually separated from midrib by a sterile zone1–2 rows, near midrib4 rows, well scattered2–3 rows, sometime separated from midrib by a sterile zone7–9 rows, well scattered

TABLE 1. Comparison among Cyrtomium remotipinnum, C. calcis, C. pachyphyllum, C. shingianum, and C. guizhouense.CharacterC. remotipinnumC. calcisC. pachyphyllumC. shingianumC. guizhouenseShape of larger scales on stipe baselanceolatebroad lanceolate or ovatelanceolate or broad lanceolatelanceolate or broad lanceolateovate or lanceolateColor of scales on stipe basebrownbrownbrownbrown or dark brown at middlebrownLength of fronds (cm)60–87(–99)20–6012–4040–69(23–)42–107Number of lateral pinnae8–15 pairs9–18 pairs3–6 (–8) pairs5–11.5 pairs0–5 pairsSize of middle and lower pinnae (cm)5–8 × 1–22.2–5 × 1.1–2.23.5–5 × 2.5–36–10 × 2–3.712–14(–19.5) × 4–5(–10)Length to width ratio of lateral pinnaemore than 3.5×less than 2.3×less than 2.5×1.5–4×usually less than 3.5×Proximity of lateral pinnaedistantimbricate or closeimbricate or closeapproximate to distantapproximate to distantShape of middle pinnaeoblong-lanceolate, usually straightdeltoid-ovate, often straightdeltoid-ovate, often straigntoblong-ovate, somewhat falcateoblong-lanceolate, slightly falcateApex form of middle pinnaeacuminateacute, or obtuseacute, occasionally obtuseacuminatelong acuminateBase form of middle pinnaecordate, symmetricalcordate, symmetricalcordate, symmetricalshallowly obliquely cordate or subtruncateobliquely cordatePattern of venationareoles 2–3 rows, those along midirb conspicuously larger than othersareoles 2–3 rows, those along midirb conspicuously larger than those of next rowareoles 4 rows, those along midirb slightly larger than those of next rowareoles 2–3 rows, those along midirb slightly larger than those of next rowareoles 7–9 rows, those along midirb as large as those of next rowDistribution of sori2(–3) rows, usually separated from midrib by a sterile zone1–2 rows, near midrib4 rows, well scattered2–3 rows, sometime separated from midrib by a sterile zone7–9 rows, well scattered