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Cryptogramma crispa
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Family: Pteridaceae
Subfamily: Cryptogrammoideae
Genus: Cryptogramma
Type species
Cryptogramma acrostichoides

8-11; see text

  • Phorolobus Desvaux 1827

Cryptogramma is a genus of ferns known commonly as rockbrakes or parsley ferns. They are one of the three genera in the Cryptogrammoideae subfamily of the Pteridaceae.[1] Cryptogramma ferns can be found in temperate regions on several continents worldwide. These ferns have two kinds of leaves which often look so different that at first glance they appear to belong to different plants. The fertile leaves have long, narrow, bumpy segments with undersides covered thickly in sporangia. The edges of the segments may curl back to cover the sporangia, forming a false indusium. The sterile leaves have thinner, wider segments which may be rounded and resemble the leaves of parsley. These ferns grow in rocky areas, often in crevices and cracks.


In North America, species within this genus are distributed over western and northern United States, Northwestern Mexico, and Canada.


Phylogeny of Cryptogramma by Fern Tree of Life.[2][3]

C. stelleri (S.G.Gmel.) Prantl (fragile rockbrake, Steller's rockbrake, slender rockbrake)

C. fumariifolia (Phil. ex Baker) Christ

C. brunoniana Wallich ex Hooker & Greville

C. acrostichoides Brown (American rockbrake)

C. sitchensis (Ruprecht) Moore (Sitka rockbrake)

C. cascadensis Alverson (Cascade rockbrake)

C. bithynica (Jessen, L.Lehm. & Bujnoch)

C. crispa (von Linné) Brown ex Hooker (parsley fern)


  1. ^ Christenhusz, Maarten J. M.; Zhang, Xian-Chun; Schneider, Harald (18 February 2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. doi:10.11646/phytotaxa.19.1.2. ISSN 1179-3163.
  2. ^ Nitta, Joel H.; Schuettpelz, Eric; Ramírez-Barahona, Santiago; Iwasaki, Wataru; et al. (2022). "An Open and Continuously Updated Fern Tree of Life". Frontiers in Plant Science. 13: 909768. doi:10.3389/fpls.2022.909768. PMC 9449725. PMID 36092417.
  3. ^ "Tree viewer: interactive visualization of FTOL". FTOL v1.5.0 [GenBank release 256]. 2023. Retrieved 17 August 2023.