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
Adiantum viridimontanum Paris  
Family: Pteridaceae
Adiantum viridimontanum image
  • FNA
  • Resources
Cathy A. Paris in Flora of North America (vol. 2)
Stems short-creeping; scales bronzy deep yellow, concolored, margins entire. Leaves arching to stiffly erect, often densely clustered, 38--75(--90) cm. Petiole 1--3 mm diam., glabrous, often glaucous. Blade fan-shaped to funnel-shaped, pseudopedate, 1-pinnate distally, 10--35 × 10--35(--45) cm, glabrous; proximal pinnae 2--7-pinnate; rachis straight, glabrous, often glaucous. Segment stalks (0.4--)0.6--1.5(--1.9) mm, dark color commonly entering into segment base. Ultimate segments long-triangular, ca. 2.5 times as long as broad; basiscopic margin oblique; acroscopic margin lobed, lobes separated by narrow (less than 1 mm) incisions; apex acute, usually entire. False indusia transversely oblong, mostly 2--5(--10) mm, glabrous. Spores mostly 45--58 µm diam. 2 n = 116. Sporulating summer--fall. Restricted to serpentine sites where it occurs in rock clefts, on talus slopes, and in well-developed serpentine soils; 200--800 m; Vt. Adiantum viridimontanum , an allopolyploid from a sterile hybrid between A . pedatum and A . aleuticum , is known only from north central Vermont (C. A. Paris and M. D. Windham 1988). Additional populations may eventually be located on serpentine in southern Quebec.

Adiantum viridimontanum
Open Interactive Map
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Adiantum viridimontanum image
Click to Display
20 Total 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.