Spinulose Shieldfern - Dryopteris carthusiana
Dryopteris austriaca, Dryopteris spinulosa
State Rank Reason (see State Rank above)
Approximately 30 collections at MONTU from several counties.
Leaves monomorphic, 15–75 cm long, petiole shorter than blade with tan scales toward the base. Leaf blade light green, ovate, non-glandular, twice pinnate at the base. Pinnules deeply pinnately lobed or toothed; downward pointing longer than those pointing upward on lower pinnae. Indusium lacking glands (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Western third of MT east to Park and Stillwater counties, excluding the southwest; circumboreal south to WA, MT, NE, MO, and SC (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Shady, mesic forests, often with western red cedar or hemlock; montane, subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.