Reviewed public profile
Lemmaphyllum microphyllum
Lemmaphyllum microphyllum, widely known as the Green Penny Fern or Japanese Beard Fern, is a miniature epiphytic fern native to East and Southeast Asia. Its natural origin spans regions of China, Japan, Korea, India, Vietnam, the Philippines, and various Asiatic Islands. This slow-growing, semi-succulent plant thrives in shaded, highly humid forests, where it grows as an epiphyte on tree trunks or as a sprawler on mossy rocks. It belongs to the family Polypodiaceae and was formally described by the botanist Carl Presl in 1851.
Growing profile
At a glance
- Plant type
- fern
- Typical size
- micro <4cm
- Humidity
- 70–95%
Native context
Distribution and habitat
- Countries
- China, India, Japan, North Korea, Philippines, South Korea, Vietnam
- Elevation
- Lowland (0–500 m), Submontane (500–1,000 m)
- Flowering
- Non-flowering
Derived growing context
Climate range
- Temperature profile
- Cool → Hot
- Mean temperature
- 10–25 °C
- Day temperature
- 13–29 °C
- Night temperature
- 7–22 °C
- Summer mean
- 19–26 °C
- Winter mean
- 9–16 °C
- Temperature span
- 22 °C
- Annual temperature swing
- 3–17 °C
- Seasonality
- Aseasonal, Four seasons
- Adaptability
- Adaptable
Country map loads as it comes into view. The country list remains available here.
- China
- India
- Japan
- North Korea
- Philippines
- South Korea
- Vietnam
Country boundaries: Natural Earth, public domain.
Ecosystems
Explore ecosystem knowledge
Ecosystem evidence
Habitat-specific growing context
Rainforest
Consistently wet; high humidity
- Latitude
- Tropical
- Moisture
- Very humid
- Elevation
- Lowland, Submont
- Seasonality
- Aseasonal
- Mean temperature
- 22–25 °C
- Day temperature
- 25–28 °C
- Night temperature
- 19–22 °C
- Annual temperature swing
- 3 °C
Wet forest
Very humid forest; frequent wetness
- Latitude
- Subtropical, Tropical
- Moisture
- Humid, Very humid
- Elevation
- Lowland, Submont
- Seasonality
- Aseasonal
- Mean temperature
- 21–25 °C
- Day temperature
- 24–29 °C
- Night temperature
- 18–22 °C
- Annual temperature swing
- 3–8 °C
Moist forest
Moderately humid forest
- Latitude
- Subtropical
- Moisture
- Humid
- Elevation
- Lowland
- Seasonality
- Aseasonal
- Mean temperature
- 21 °C
- Day temperature
- 25 °C
- Night temperature
- 18 °C
- Annual temperature swing
- 8 °C
Temperate rainforest
Cool/wet coastal orographic forests
- Latitude
- Cool temperate, Warm temperate
- Moisture
- Very humid
- Elevation
- Lowland
- Seasonality
- Four seasons
- Mean temperature
- 10–16 °C
- Day temperature
- 13–19 °C
- Night temperature
- 7–13 °C
- Annual temperature swing
- 14–17 °C
Temperate forest
Four-season forest zones
- Latitude
- Cool temperate, Warm temperate
- Moisture
- Humid
- Elevation
- Lowland
- Seasonality
- Four seasons
- Mean temperature
- 10–16 °C
- Day temperature
- 14–20 °C
- Night temperature
- 7–13 °C
- Annual temperature swing
- 14–17 °C
Seasonal context
- Very small annual temperature swing; fairly consistent through the year
- Pronounced annual temperature swing (temperate climates)
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Stable BJURNY record: tx_e90e438b5ff1428ea283