RATTLESNAKE FERN
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| File Size: 141 KB |
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Botrychium virginianum (L. ) Sw.
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| Marion County, Kansas |
| Perennial |
| Height: To 20+ inches |
| Family: Ophioglossaceae - Adder's Tongue Family |
| Flowering Period: |
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| Culms: | | Stems upright from fleshy roots | | Leaves: | | Blades pale green, 3 to 4 times pinnately compound, 10-13+ inches long; pinnae to 12 pairs, slightly ascending, lanceolate; pinnules sessile, lanceolate, to 8 inches long and 12 inches broad, deeply lobed, lobes linear, dissected or toothed, midrib present, tip acute; fertile spike up to 8 inches long, arising from base of vegetative leaf blade (from common petiole); sporangia round, 1/50 to 1/25 inch diameter; spores yellowish, shedding May-July. | | Habitat: | | Dry or moist woods | | Distribution: | | East 2/5 of Kansas | | Origin: | | Native | | Reproduction: | | Ferns reproduce by spores rather than true flowers. | | Comments: | | Rattlesnake fern is the most widespread Botrychium in North America. New leaves develop in the spring and wither by late summer. From Latin botry, bunch of grapes and oides resembling, alluding to the sporangial clusters. |
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| Rattlesnake fern blade |  | | 112 KB | | Riley County, Kansas |
| | Rattlesnake fern |  | | 105 KB | | Riley County, Kansas |
| | Rattlesnake fern pinnules |  | | 86 KB | | Riley County, Kansas |
| | Rattlesnake fern sporangia |  | | 93 KB | | Riley County, Kansas |
| | Rattlesnake fern sporangia |  | | 69 KB | | Riley County, Kansas |
| | Rattlesnake fern |  | | 99 KB | | Riley County, Kansas |
| | Rattlesnake fern inflorescence |  | | 111 KB | | Marion County, Kansas |
| | Rattlesnake fern inflorescence |  | | 123 KB | | Marion County, Kansas |
| | Rattlesnake fern leaves |  | | 110 KB | | Marion County, Kansas |
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