Cutleaf Grapefern
探検植物
Cutleaf Grapefern
sceptridium dissectum
The Cutleaf Grapefern (Sceptridium dissectum) is a fascinating, primitive fern native to the woodlands of eastern North America. Belonging to the ancient adder's-tongue family, this low-growing perennial stands out for its unusual life cycle and striking seasonal changes. Unlike typical ferns that display lush green fronds only during the warm spring and summer months, the sterile leaf of the Cutleaf Grapefern persists throughout the cold winter, often undergoing a spectacular transformation to a rich bronze or reddish-purple hue. This winter evergreen habit makes it an exciting find for cold-weather hikers. The plant is dimorphic, featuring a highly dissected, lacy vegetative frond that grows close to the ground, and a tall, separate, erect fertile stalk resembling a tiny cluster of green grapes, which releases wind-dispersed spores in late autumn. It plays a subtle yet vital role in forest ecosystems, relying on complex symbiotic partnerships beneath the soil surface to thrive.
生息地: Found in moist, acidic deciduous woodlands, second-growth forests, old overgrown fields, and shaded thickets, often growing among leaf litter.
外見
This small fern features a highly divided, lacy, triangular sterile blade that sits on a short stalk close to the ground, measuring 10 to 40 cm tall. The segments of the leaf are deeply cut with pointed, sharp-toothed margins, giving it a distinctive 'cutleaf' texture. During summer, the leaves are a deep green, but they turn bronze-red or purple after the first winter frosts. Rising from the same base is a taller, fleshy fertile stalk that ends in a branched, grape-like cluster of yellow-green sporangia which eventually turn brown when releasing spores.
界Plantae門Tracheophyta綱Polypodiopsida目Ophioglossales科Ophioglossaceae属Sceptridium
カテゴリ
植物レア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
Because it relies so heavily on undisturbed underground fungal networks, this fern is highly sensitive to soil disruption and rarely survives transplantation.
Its common name 'grapefern' comes from the rounded, grape-like appearance of its spore-bearing structures called sporangia.
The bronze coloration of its winter leaves acts like a natural solar heater, absorbing extra warmth from weak winter sunlight.
特殊能力
能力
Evergreen Bronzing
The sterile fronds undergo a chemical shift in late autumn, turning from bright green to bronze-purple to better absorb winter warmth and resist freezing temperatures.
能力
Fungal Dependency
The microscopic spores require an obligate symbiotic relationship with subterranean mycorrhizal fungi to germinate and nourish the non-photosynthetic gametophyte.
能力
Dimorphic Division
It splits its energy between a low-growing vegetative leaf for light capture and a highly elevated, separate fertile stalk designed to maximize wind dispersal of spores.
サイズと詳細
- 長さ
- 10-40 cm
- 寿命
- 5-20 年
食性と食事
As a photosynthetic plant, the mature sporophyte produces its own energy using sunlight, carbon dioxide, water, and soil minerals, while its subterranean stages depend on mycorrhizal fungi.
年齢による違い: The juvenile gametophyte stage lives underground without sunlight, absorbing nutrients entirely from soil fungi, whereas the mature sporophyte relies on photosynthesis.
主な食物
- Sunlight
- Carbon dioxide
- Water
- Soil minerals
生態系とのつながり
mutualism
Mycorrhizal Fungus
Glomus intraradices
Provides a symbiotic fungal network necessary for spore germination and gametophyte development.
eaten by
White-tailed Deer
Odocoileus virginianus
Occasionally browses the evergreen sterile leaves during winter when food is scarce.
eaten by
Fern Moth
Herpetogramma aeglealis
Caterpillars feed on the sterile fronds of various woodland ferns.
特徴
このオブジェクトにはまだ特徴バッジが割り当てられていません。
別名
まだ別名はありません。
コレクション
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安全性
危険度
1/5 · 非常に低い
まだ特別な安全上の注意はありません。
よくある質問
Cutleaf Grapefernを見分けるには？
Cutleaf Grapefernを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。
Cutleaf Grapefernの長さは何ですか？
10-40 cm
Cutleaf Grapefernの寿命は何ですか？
5-20 年
Cutleaf Grapefernは何を食べますか？
As a photosynthetic plant, the mature sporophyte produces its own energy using sunlight, carbon dioxide, water, and soil minerals, while its subterranean stages depend on mycorrhizal fungi.
Cutleaf Grapefernは通常どこに生息していますか？
Found in moist, acidic deciduous woodlands, second-growth forests, old overgrown fields, and shaded thickets, often growing among leaf litter.
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