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''Cryptogramma acrostichoides'' is a fern species in the
Jepson Manual Treatment - ''Cryptogramma acrostichoides''USDA Plants Profile; Cryptogramma acrostichoidesFlora of North America''Cryptogramma acrostichoides'' - Photo gallery
{{Taxonbar, from=Q5190926 Pteridaceae Ferns of California Ferns of the United States Flora of the West Coast of the United States Flora of the Sierra Nevada (United States) Flora of the California desert regions Flora of the Northwestern United States Flora of the Western United States Flora of Canada Plants described in 1823 Taxa named by Robert Brown (botanist, born 1773) Flora without expected TNC conservation status
Cryptogrammoideae
Cryptogrammoideae is a subfamily of ferns in the family Pteridaceae. The subfamily contains three genera and about 23 species.
Taxonomy
In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), Cryptogrammoideae is one of the five subf ...
subfamily of the Pteridaceae. It is known by the common names American parsley fern and American rockbrake and is native to most of western North America, where it grows in the cracks of rocks in many types of sunny mountainous habitat.
Description
''Cryptogramma acrostichoides'' grows in a single tuft from a shortrhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
. There are two leaf types. The sterile leaf has flat, oval-shaped lobed leaflets resembling parsley
Parsley, or garden parsley (''Petroselinum crispum'') is a species of flowering plant in the family Apiaceae that is native to the central and eastern Mediterranean region (Sardinia, Lebanon, Israel, Cyprus, Turkey, southern Italy, Greece, Por ...
, and the fertile leaf is longer with narrow, thick, linear leaflets with their margins curled under to cover the sporangia on the undersides. Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 56. University of Washington Press, Seattle. The fertile leaves typically project well above the sterile leaves. Some plants die back completely toward the end of a dry period while others remain green over winter and die back in the spring. In both cases, the leaves are not shed and the following growth season they are usually apparent as a tuft of dead leaves, in contrast to its close relative ''Cryptogramma cascadensis
''Cryptogramma cascadensis'' is a species of fern known by the common names Cascade parsley fern and Cascade rockbrake.
Description
The plant forms a clump from a rhizome. It has two types of leaves. The sterile leaf is flat with lobed oval or ...
'', which is deciduous. Hydathodes form a slight depression near the leaflet edge at the end of each vein and there are sparse short appressed hairs present in the groove on the upper side of the rachis and costae (they are difficult to see without close inspection with a lens).
Range
''Cryptogramma acrostichoides'' is found mostly in the coastal mountain ranges of western North America and in the Rocky Mountains. It ranges from Alaska to California in coastal mountains and the Cascade Mountains and Sierra Nevada, and from southeastern British Columbia through New Mexico in the Rockies.References
External links
Jepson Manual Treatment - ''Cryptogramma acrostichoides''
{{Taxonbar, from=Q5190926 Pteridaceae Ferns of California Ferns of the United States Flora of the West Coast of the United States Flora of the Sierra Nevada (United States) Flora of the California desert regions Flora of the Northwestern United States Flora of the Western United States Flora of Canada Plants described in 1823 Taxa named by Robert Brown (botanist, born 1773) Flora without expected TNC conservation status