Rosette (botany) Rosette (botany) In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil, their structure is an example of a modified stem in which the internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height. In bryophytes and algae, a rosette results from the repeated branching of the thallus as the plant grows, resulting in a circular outline. Many plant families have varieties with rosette morphology; they are particularly common in Asteraceae (such as dandelions),
Institute of Botany, Chinese Academy of Sciences systematic and evolutionary botany, vegetation and environmental change, plant molecular physiology and development, photosynthesis, and the sustainable use of plant resources. IB-CAS comprises five research units: the National Key Laboratory of Systematic and Evolutionary Botany, the National Key Laboratory of Vegetation and Environmental Change, the CAS Key Laboratory of Molecular Physiology, the CAS Key Laboratory of Photobiology and the CAS Key Laboratory of Plant Resources. In addition, it is also home to the largest herbarium in Asia, 10 field stations, the Beijing Botanical Garden and the Hua Xi Subalpine Botanical Garden in Sichuan Province. IBCAS’s herbarium collections comprise 2.63 million