Dryopteris formosana (Christ) C.Chr.

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Dryopteris

Characteristics

Rhizome ascending, apex densely covered with castaneous, lanceolate scales. Fronds caespitose. Stipes stramineous, 25-35 cm, ca. 2 mm in diam., densely covered with castaneous, lanceolate 1-1.2 cm × ca. 2 mm, entire scales at base. Lamina pentagonal, 20-30 × 20-25 cm, deeply cordate, tripinnate, pinnatifid at apex. Pinnae 8-10 pairs, broadly lanceolate, 10-15 cm, widest at base, up to 10 cm wide. Pinnules ca. 10 pairs, those on basiscopic side usually longer than those on acroscopic side, lowest basiscopic pinnule on lowest pinna much longer than next pinnule and directed downward. Ultimate pinnules on lowest basiscopic pinnule 8-10 pairs, oblong, 1-1.5 cm × 4-5 mm, with sharp teeth, obtuse at apex. Veins obscure on both surfaces. Lamina papery, green; rachis and pinna rachis densely covered with scales; scales on rachis nearly black, lanceolate; scales on pinna rachis light brown, saccate. Sori on either side of costa; indusia brown, entire. n = 123.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.1 - 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-6
Soil humidity -
Soil texture -
Soil acidity 4-6
Soil nutriment -
Hardiness (USDA) 8-11

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by divisions.
Mode divisions
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Dryopteris formosana unspecified picture

Distribution

Dryopteris formosana world distribution map, present in China, Japan, Philippines, Korea (Democratic People's Republic of), and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:17095190-1
WFO ID wfo-0001107302
COL ID 37WFM
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Dryopteris constantissima Dryopteris formosana Aspidium formosanum Dryopteris kodamai Polystichum constantissimum Dryopteris phaeolepis Dryopteris liui Polystichum varium var. eurylepidota