Tag Archives: pinnate

Word of the Week: Palmate

Two common forms of venation that are the starting point for many plant identification systems are palmate and pinnate. A third venation pattern is fan-shaped, as in gingko trees… A fourth form, arcuate, has a strong midrib, but also curved secondary veins in a more heart-shaped arrangement. The parallel venation of a fifth form appears in most monocot plants. Continue reading

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Word of the Week: Frond

Although people may refer to the leaves of palms and palm-like woody plants (cycads) as fronds, some botanists restrict the term to ferns. Each fiddlehead that emerges from a fern’s underground rhizome is a coiled leaf or frond… Continue reading

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