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Key to Acorus
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39473
1 Vegetative leaves < 6 dm long, (3-) 5-10 (-14) mm wide; spadix (3-) 4-10 (-14) cm long, < 0.7 cm in diameter (including the flowers) | |
1 Vegetative leaves > 6 dm long, (7-) 10-20 (-25) mm wide; spadix 4.5-6.5 (-8) cm long, > 0.6 cm in diameter (including the flowers. | |
2 Midvein of the leaves about equally as prominent as 1-5 well-developed lateral veins parallel to the midvein (at least one of the other veins 0.75-1× as wide as the midvein); mature fruits produced; vegetative leaves (3-) avg. 8 (-13) mm wide; vegetative leaf margins planar, not undulate or crisped; flowers 2-3 mm long | |