Ann E. Antlfinger, William F. Curtis and Otto T. Solbrig Survivorship and fecundity in the forest herb, Viola sororia, are size-dependent. The basis of size variation among individuals of Viola ...

There are over 500 species in the Viola genus, including annuals, perennials, and even subshrubs. Collectively, they are known as violas, though individual distinctive garden types are usually called ...

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