Crocus, Fall
Crocus pulchellus
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Crowfoot, European
Aquilegia vulgaris
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Crowfoot, Water
Ranunculus aquatilis
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Crown of Thorns
Euphorbia milii
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Crown of Thorns
Euphorbia milii var. imperiate
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Crown of Thorns
Euphorbia milii var. lutea
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Crown Vetch
Coronilla varia
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Crown-of-Thorns
Euphorbia milii var. splendens
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Cryptotaenia
Cryptotaenia japonica
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Cudweed
Gnaphalium spp.
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Culver's Root
Veronicastrum virginicum var. sibericum
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Cup and Saucer Vine
Cobaea scandens
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Cup Plant
Silphium perfoliatum
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Cupflower
Nierembergia hippomanica
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Cupflower
Nierembergia hippomanica
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Cupid's Bower
Achimenes longiflora
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Cupid's Dart
Catananche caerulea
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Cupid's Dart
Catananche caerulea
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