1.0North Africa Treeshttps://www.northafricatrees.org/en/Rubia L. - North Africa Treesrich600338<blockquote class="wp-embedded-content" data-secret="PGLpRuGbrl"><a href="https://www.northafricatrees.org/en/genuses/rubia-l-2/">Rubia L.</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.northafricatrees.org/en/genuses/rubia-l-2/embed/#?secret=PGLpRuGbrl" width="600" height="338" title="“Rubia L.” — North Africa Trees" data-secret="PGLpRuGbrl" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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Genus composed of about 80 species in temperate and Mediterranean areas, widely distributed across Europe, Africa, Asia and America. Includes perennial herbs, or unusually small shrubs, often with woody base and climbing lianas. They have characteristic quadrangular stems with hooked retrorse trichomes and verticillate coriaceous leaves, in groups of 4-6, with scabrid margins. In North...