Features;"P. xinningensis";"P. hubeiensis";"P. cicutariifolia";"P. merrilliana complex" "Floral morph";Homostylous;Distylous;Homostylous;"Distylous or homostylous" "Umbel layers";1;1–2;1;1–3 "Corolla diameter";"8–12 mm";"13–18 mm";"6–10 mm";"9–19 mm" "Corolla lobes";"Apex conspicuously emarginate";"Apex conspicuously emarginate";"Apex conspicuously emarginate";"Apex rounded" "Scape length";"0.8–2 cm";"3.5–9.6 cm";"1–3 cm";"1.3–9 cm" Pollens;Pantoporate;Pantoporate;Pantoporate;"Pantoporate or stephanocolpate" "Pollen sac";Black;Yellow;Yellow;Yellow Cotyledon;"Triangular obovate";Ovate;Ovate;Ovate "Older Leaves";"Pinnatisect, with 11–19 pinnae, the terminal pinna similar to others, 3-lobed or parted";"Pinnatisect, with 13–19 pinnae, the terminal pinna similar to others, 3-lobed or parted, margin coarsely dentate";"Pinnatisect, with 7–17 pinnae, the terminal pinna similar to others, 3-lobed";"Pinnatisect, with 11–21 pinnae, the terminal pinna similar to others, 3-lobed or parted" "Glandular hairs";"Leaves and scape densely covered with glandular hairs (0.07–0.42 mm)";"Leaves and scape densely covered with glandular hairs (0.76–0.88 mm)";without;without Distribution;Hunan;Hubei;"Anhui, Zhejiang";"Anhui, Zhejiang" Habitat;"Karst caves";"Shady damp rock crevices";"Stream sides or under broadleaf deciduous forests of northern slopes";"Stream sides or under broadleaf deciduous forests of northern slopes"