POWDERY CLOAK FERN
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| File Size: 108 KB |
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Argyrochosma dealbata (Pursh ) Windham
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| Chase County, Kansas |
| Perennial |
| Height: 2-6 inches |
| Family: Pteridaceae - Maidenhair Fern Family |
| Flowering Period: June, July, August, September |
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| Culms: | | Erect to ascending, wiry, usually unbranched; scales brown, linear, .04 to .16 inch, margins entire. | | Leaves: | | Clustered, numerous; petiole chestnut to dark brown, wiry, lustrous, glabrous; blades green to glaucous, 1.2 to 6 inches, narrowly to broadly deltoid in outline; pinnae long petiolate, in 3-5 pairs, deltoid to ovate; pinnules linear to ovate, .06 to .14 inch, terminal segments slightly larger, occasionally few-lobed, apex obtuse to rounded, margins of fertile pinnules slightly recurved and partially covering sporangia, abaxial surfaces densely white powdery, adaxial surfaces bluish-green, mostly glabrous, veins usually obscure; sporangia in marginal band, usually restricted to distal 1/3 to 1/2 of each vein; indusia absent; spores dark brown, 64 per sporangium. | | Habitat: | | Crevices of calcareous or sandstone cliffs and ledges | | Distribution: | | East 1/3 of Kansas | | Origin: | | Native | | Comments: | | Argyrochosma, Greek "argyros", silver, and "chosma", powder, alluding to the whitish mealy powder on the abaxial leaf surfaces. |
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| Powdery cloak fern habit |  | | 126 KB | | Chase County, Kansas |
| | Powdery cloak fern |  | | 105 KB | | Chase County, Kansas |
| | Powdery cloak fern pinnae |  | | 76 KB | | Chase County, Kansas |
| | Powdery cloak fern |  | | 108 KB | | Chase County, Kansas |
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