Log In New Account Sitemap
  • Home
  • Search
    • Search Collections
    • Map Search
    • Dynamic Species List
    • Exsiccati
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Search Images
  • Species Checklists
    • North America
  • Crowdsource
  • Contacts
    • Partners
  • Acknowledgements
Cryptogramma cascadensis E.R. Alverson  
Family: Pteridaceae
Cryptogramma cascadensis image
  • FNA
  • Resources
Edward R. Alverson in Flora of North America (vol. 2)
Stems decumbent to erect, much branched from base, stout, 4--8 mm diam. (including hardened, persistent leaf bases); scales often bicolored, dense, broadly lanceolate to linear, to 6 × 2 mm. Leaves strongly tufted, deciduous; sterile leaves spreading, 3--20 cm; fertile leaves erect, 5--25 cm; petioles, costae, and costules glabrous. Petiole green to straw-colored, dark brown only on proximal 1/8 or less, ca. 1 mm wide when dry, collapsing and strongly furrowed; scales bicolored or ± concolored, becoming sparse distally. Blade deltate to ovate-lanceolate, all 2--3-pinnate, herbaceous, thin and translucent when dried, hydathodes superficial. Segments of sterile leaves oblong to fan-shaped, bases cuneate, distal 1/2--1/3 of each segment regularly dentate and often more deeply incised every 2d and 4th tooth; segments of fertile leaves ascending to erect, strongly differentiated from those of sterile leaves, linear, 3--12 × 1--2 mm; fertile segments revolute, covering sporangia. Sporangia in sori that coalesce at maturity. 2 n = 60. New growth produced in spring, spores maturing in late summer and autumn, leaves dying in autumn. Talus slopes and cliff crevices, often on igneous rocks, typically in relatively mesic subalpine habitats; 900--3500 m; B.C.; Calif., Idaho, Mont., Oreg., Wash. Populations of Cryptogramma cascadensis were previously identified as C . acrostichoides .

Cryptogramma cascadensis
Open Interactive Map
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Cryptogramma cascadensis image
Click to Display
100 Initial Images
- - - - -
View All Images

The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.