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),
Astrological botany Virgo. Astrological botany was often used in conjunction with the doctrine of signatures, which held that the physical form of a plant reflected its medicinal use. In the words of Agnes Arber, England became "badly infected" with astrological botany during the 17th century, when its most "notorious" practitioner was Nicholas Culpeper. Astrological botany Astrological botany is based on the notion that if plants or seeds are to be used for medicinal purposes then their planting and collection must be carried out with regard to the positions of the planets and other heavenly bodies, which are at the heart of the