Contents
Description
Cryptogramma is a genus of ferns that belong to the family Pteridaceae. The name Cryptogramma is derived from the Greek words ‘kryptos’ which means hidden and ‘gramma’ which means letter. The name represents the hidden spores that are located on the underside of the fronds. The ferns of this genus are small and delicate, with fronds that are usually less than 30 cm long. They are native to the Northern Hemisphere, and can be found in rocky habitats, such as cliffs, talus slopes, and scree.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Pteridophyta |
| Class | Pteridopsida |
| Order | Pteridales |
| Family | Pteridaceae |
| Genus | Cryptogramma |
Appearance
Cryptogramma ferns have a delicate appearance, with fronds that are usually less than 30 cm long. The fronds are typically pinnate, with small, round leaflets that are attached to the central stem by a short stalk. The underside of the fronds is covered in spores, which are hidden by a protective covering called the indusium. The fronds are usually green, although some species have a bluish or grayish tint to them.
Care Guide
Cryptogramma ferns are relatively easy to care for. They prefer moist, well-draining soil that is rich in organic matter. They should be watered regularly, but not overwatered, as this can lead to root rot. Fertilizer can be applied once a month during the growing season. These ferns prefer partial shade to full shade, and are hardy in USDA zones 4-8.
Common Pests & Diseases
Cryptogramma ferns are relatively resistant to pests and diseases. However, they can be susceptible to fungal diseases, such as rust and leaf spot. These diseases can be prevented by maintaining good air circulation around the plants and avoiding overhead watering. Scale insects and mealybugs can also be a problem, and can be treated with insecticidal soap.
Habitat
Cryptogramma ferns are native to the Northern Hemisphere, and can be found in rocky habitats, such as cliffs, talus slopes, and scree. They are typically found at high elevations, and can be found in alpine and subalpine regions. They prefer habitats that are moist and shady, and are often found growing in crevices in rocks or along stream banks.
Question and Answer
Q: Are Cryptogramma ferns easy to grow?
A: Yes, Cryptogramma ferns are relatively easy to grow and care for.
Q: Where are Cryptogramma ferns found?
A: Cryptogramma ferns are native to the Northern Hemisphere, and can be found in rocky habitats, such as cliffs, talus slopes, and scree.
Q: What is the meaning of the name ‘Cryptogramma’?
A: The name ‘Cryptogramma’ is derived from the Greek words ‘kryptos’ which means hidden and ‘gramma’ which means letter, representing the hidden spores located on the underside of the fronds.
Q: What are the common pests and diseases that affect Cryptogramma ferns?
A: Cryptogramma ferns are relatively resistant to pests and diseases, but can be affected by fungal diseases such as rust and leaf spot, as well as scale insects and mealybugs.
Related Plants
- Pteridaceae
- Notholaena
- Cheilanthes
- Adiantum
References
- Bebbington, A. (2005). The book of ferns. University of California Press.
- Flora of North America. (n.d.). Cryptogramma. Retrieved from https://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=107378
- Missouri Botanical Garden. (n.d.). Cryptogramma. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=m240
