Fishbone fern

Nephrolepis cordifolia (L.) C.Presl

light
Any light
water
Medium
tall
61 cm
wide
76 cm

Polypodiaceae

Also called Fishbone Fern, Sword fern, Tuber sword fern, Ladder fern, Tuberous Sword Fern

Formerly Aspidium cordifolium, Nephrodium cordifolium, Polypodium cordifolium

When it flowers

Not known yet in the tropics: too few flowering observations to read a season from.

Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.

PetsNC State Extension lists it as non-toxic to dogs, cats and horses (25 Oct 2026)
PeopleNo safety information yet

If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.

Something wrong with it?

About it

Grows as
Lithophyte or epiphyteKew's checklist, not yet checked
Climate
SubtropicalKew's checklist, not yet checked
Wild in
São Tomé, SW. Cameroon, W. Indian Ocean, Trop. & Subtrop. Asia to PacificKew's checklist, not yet checked
Light
Sun or shadeRead from NC State Extension and Wikipedia, not yet checked: its sources are splitTied: no reading has a majority of the 2 sources, so all are kept for a person to settle. Sources differ: NC State Extension full, part; Wikipedia shade
Height
30 cm to 91 cmRead from NC State Extension, one source
Spread
30 cm to 1.2 mRead from NC State Extension, one source
Water
Average: moist, well drainedRead from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources
Coldest it survives
-12.2 °C (USDA zone 8a)Read from NC State Extension, one source

Not known yet: flowers, heat, hottest it survives.

In other languages (12)

Spanish
helecho serrucho, Helecho rizado gigante
Hawaiian
kupukupu
Japanese
タマシダ, 玉羊歯
Chinese
腎蕨, 石黃皮, 圓羊齒
Chinese (China)
肾蕨
Swedish
fjäderbräken
Russian
Нефролепис сердцелистный
Danish
nyrebregne
Polish
nefrolepis sercolistny, nerczyłusk sercolistny
Thai
เฟิร์นใบมะขาม
French
Néphrolépide à feuilles cordées
Italian
Felce cordifolia

Where this comes from

A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.