Microsorum punctatum · Wart Fern / Strap Fern

The plant shows a fern growing from a fuzzy, brown rhizome covered in dense hair-like scales (visible resting on top of the potting soil), with long wiry dark stipes (petioles) arching outward and terminating in undulating, irregularly lobed pinnatifid fronds with wavy margins and scattered dark sori/spots on the underside surfaces. This creeping, hairy rhizome habit combined with deeply lobed, wavy-edged fronds is characteristic of epiphytic ferns in the Polypodiaceae family, such as Microsorum (e.g., Microsorum punctatum 'Grandiceps' or cristate forms) or Phlebodium aureum (blue star fern), both of which have creeping rhizomes with scaly/hairy covering and undulating fronds. The specific wavy, almost crested frond margins suggest a cultivar form rather than a typical wild-type leaf shape. However, without a clear close-up of the rhizome scales (color, shape, peltate vs. clathrate), the spore/sorus arrangement pattern, and the sori distribution on the frond underside, I cannot confirm the exact genus or species. Similar genera to rule out include Polypodium, Davallia (whose rhizomes are typically more silvery/scaly rather than orange-brown fuzzy), and Nephrolepis. A close-up photo of the rhizome surface, the underside of a frond showing sorus placement, and a clearer shot of a single frond's margin/lobing pattern would help narrow this down to species level.

Generated 2026-08-13 16:29 by anthropic (claude-sonnet-5).

Light

Medium to bright indirect light; avoid direct sun which can scorch the fronds. Tolerates lower light but growth slows.

Water

Keep soil or mount lightly and evenly moist; water when the surface just starts to dry out, and never let it fully dry or stay soggy.

Nutrients

Dilute (half-strength) balanced liquid fertilizer monthly during spring through fall; skip in winter -- ferns are sensitive to fertilizer salt buildup.

Repotting

Repot every 1-2 years in spring when rootbound; this fern has a shallow, often creeping rhizome so use a wide shallow pot rather than a deep one.

Soil media

Loose, well-draining, chunky mix -- e.g. standard potting soil amended with orchid bark, perlite, and peat/coir -- since these are epiphytic/semi-epiphytic ferns in habitat.

Temp & humidity

65-80F; high humidity (50-70%+) -- mist regularly, use a pebble tray, or place in a humid conservatory zone away from drafts and heat vents.

Temperature range

🌡️ 65-80F

Humidity range

💦 50-70%+

Care group

🏷️ Low Light & Humid

Toxicity

No known toxicity concerns to pets or people.

Pests & diseases

Generally trouble-free; watch for scale and mealybugs, and root/rhizome rot if kept too wet or in poorly draining media.

Propagation

Divide the creeping rhizome into sections with fronds and roots attached, then pot separately in moist fern mix.

Generated 2026-08-16 21:28 by anthropic (claude-sonnet-5).