Difference between revisions of "Botrychium sect. Sceptridium"
Mem. Torrey Bot. Club 19(2): 24. 1938.
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|accepted_name=Botrychium sect. Sceptridium | |accepted_name=Botrychium sect. Sceptridium | ||
| − | |accepted_authority= | + | |accepted_authority=(Lyon) R. T. Clausen |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=Mem. Torrey Bot. Club | |title=Mem. Torrey Bot. Club | ||
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name=Botrychium sect. Sceptridium | name=Botrychium sect. Sceptridium | ||
| − | |authority= | + | |authority=(Lyon) R. T. Clausen |
|rank=section | |rank=section | ||
|parent rank=subgenus | |parent rank=subgenus | ||
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|publication year=1938 | |publication year=1938 | ||
|special status= | |special status= | ||
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|genus=Botrychium | |genus=Botrychium | ||
|subgenus=Botrychium subg. Sceptridium | |subgenus=Botrychium subg. Sceptridium | ||
Latest revision as of 14:38, 9 December 2021
Roots usually 10 or less, blackish, 1–4 mm diam. 1cm from base. Plants over 12 cm. Common stalk lacking idioblasts. Trophophore erect, long-stalked, arising from basal portion of common stalk near ground level; blade usually 1 per plant, appearing in spring, dying the following spring, present during winter, deltate, 2–4-pinnate, mostly 5–25 cm wide when mature, herbaceous or leathery. Leaf primordia densely hairy, hairs 1.5–2mm. Leaf sheath closed. Pinna divisions reduced in size to tip (except B. biternatum, B. dissectum, and B. oneidense with undivided tips larger than lateral pinnae). First pinnule on basal pinnae usually borne basiscopically. Sporophore long-stalked, arising from basal portion of common stalk near ground level, commonly absent or represented by hairy rudiment due to abortion, or falling off, stalks and rachis only slightly flattened, not fleshy, 0.5–0.8 mm wide. x =45.
Discussion
Species 13 (6 in the flora).
Selected References
None.