1.   These appear to be a stylised cornice pattern, i.e. a partial or simplified representation of the pattern which encloses the central square in mosaic B.

2.   Some woody perennials, such as lantana and salvia, have hollow stems.

3.   The one-third business probably got started because peonies have short stems.

4.   The trailing runners of the squash have long stems, tendrils like pea shoots, tiny buds and small green leaves.

5.   Unhealthy plants may be lopsided, have weak stems or have insects.

6.   When buying out-of-season tomatoes it is critical that you buy the ones that have stems.

7.   The modern versions can grow far larger and have tougher stems.