Niphidium crassifolium: Epiphytic Strap Fern for Tropical Collections

Overview

Niphidium crassifolium is an epiphytic fern native to tropical America, from Mexico to Brazil. Its simple, leathery, strap-shaped fronds grow in a nest-like rosette, catching debris and moisture—a classic "trash-basket" epiphyte adapted to life in the forest canopy.

Botanical Description

Fronds are simple, entire, linear-lanceolate, 30–80 cm long and 3–6 cm wide, thick and leathery, dark green above, paler below. They radiate from a short, creeping rhizome covered in brown scales. Sori are linear, running along the veins on the underside, without indusia. The plant forms a dense, nest-like clump that accumulates humus.

Taxonomy

Family:	Polypodiaceae
Genus:	Niphidium (nif-FID-ee-um)
Species:	crassifolium (krass-ih-FOH-lee-um)
Synonym:	Polypodium crassifolium

Cultivation Requirements

• Light: Bright shade; no direct sun.
• Mounting: Best grown epiphytically on cork bark, tree fern slab, or in a hanging basket with coarse epiphyte mix.
• Moisture: High humidity; mist frequently. Keep root zone moist but not soggy.
• Hardiness: USDA zones 10–11; strictly tropical.

Garden Uses

Collector's plant for tropical ferneries, orchidariums, and vivariums. Mount on a plaque with sphagnum moss for a naturalistic display. The nest habit makes it a conversation piece. Not suited for typical garden beds.

Notes

The genus Niphidium includes about 15 species of Neotropical epiphytes. N. crassifolium is among the most commonly cultivated. Requires consistent warmth and humidity—best in a greenhouse or Wardian case outside the tropics.