Cistanthe tweedyi (Portulacaceae) is a rare perennial herb endemic to the Cascade Mountains of northern Washington and adjacent British Columbia. It has heretofore been classified in Lewisia, probably ...

WEST LAFAYETTE, Ind. — Leaves are the primary plant organs responsible for photosynthesis. Their size, shape and angles — all affected by cell patterning and growth — can also expose more of their ...

An image analysis system was used to calculate the surface area and volume of the submerged leaves of seven species of Myriophyllum. We separated the species into two categories based on their ...

Francesco Vuolo and colleagues from the laboratory of Max Planck Director Miltos Tsiantis are investigating the mechanisms underlying the dazzling variation in leaf shapes one can see in nature.

Fossils and their surrounding matrix can provide insights into what our world looked like millions of years ago. Fossils of angiosperms, or flowering plants (which are the most common plants today), ...