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FOC | Family List | FOC Vol. 2-3 | Dryopteridaceae | Bolbitis

25. Bolbitis ×nanjenensis C. M. Kuo, Stud. Ferns Ken-Ting Natl. Park. 53. 1986.

南仁实蕨 nan ren shi jue

Rhizome creeping, ca. 4 mm in diam., densely scaly; scales dark brown, ovate-lanceolate, ca. 3 × 1 mm, margin subentire, apex long acuminate. Sterile fronds pinnate, stramineous, 30-35 cm, sparsely scaly; rachis usually with a narrow wing; pinnae 11-13 pairs, sessile, oblong-lanceolate, ca. 5 × 1-1.2 cm, abaxially sparsely scaly, adaxially glabrous, base asymmetrical, usually oblique and broadly cuneate, margin ± entire, apex acute; superior pair of pinnae connate, terminal part with a bulbil; veins reticulate and forming a costal areole. Fertile fronds not seen.

● Ravines in semi-primary dwarf forests, on outermost mountain slopes, on seaside exposed to wind. Taiwan (Pingdong).

Bolbitis ×nanjenensis is a hybrid between B. appendiculata and B. heteroclita. Bolbitis ×nanjenensis is very close to B. ×laxireticulata, both with rachis narrowly winged, but the latter differs by its sterile pinnae larger (4.5-7 × 1.5-2 cm) and margin ± entire to lobed to 2/5 toward costa, with a distinct spine in each sinus.


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