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Key to Convallaria
Ruscaceae
Convallaria
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39565
1 Leaf blades averaging 10-15 cm long, 3-5 cm wide; rhizomes short-creeping, the individual above-ground shoots spaced closely (typically 5-10 cm apart); flowering scape > ½ as long as the leaves; longer bracts of the inflorescence 4-10 mm long; [introduced, persistent around old home sites and other plantings]
1 Leaf blades averaging 15-35 cm long, 5-13 cm wide; rhizomes absent or long-creeping, the individual above-ground shoots spaced widely (usually at least 15 cm apart); flowering scape < ½ as long as the leaves; longer bracts of the inflorescence 8-20 mm long; [native, of forests of the Mountains and upper Piedmont]