Echium

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  E. plantagineum

  1a. Stamens not or scarcely exserted from the corolla, not exceeding the longer corolla lobes
• See list of 3 species in 1b
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  1b. Stamens conspicuously exserted from the corolla, surpassing the lobes [Fig. 494]
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    E. pustulatum

    2a. Pubescence of stem coarse, spreading, with an evident, pustulose base
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    2b. Pubescence of stem firm, bristle-like, but without a pustular base
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      E. vulgare

      3a. Lower branches of the inflorescence 2.5–6 cm long, bearing flowers from base 
to apex
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      E. creticum

      3b. Lower branches of the inflorescence 12–22 cm long, not bearing flowers in the 
basal portion

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 Show photos of:   Each photo represents one species in this genus.