Term:
Staminal tube zygomorphic
Staminal tube zygomorphic
Definition:
The prolongation of one side of the staminal tube of species of.
The prolongation of one side of the staminal tube of species of
Notes:
Only species of Allantoma, Grias, Gustavia, and Cariniana have staminal tubes. The frist three genera possess actinomorphic androecia while those of Cariniana are zygomorphic. The zygomorphy of species of Cariniana differs in that one side of a staminal is prolonged whereas in all other zygomorphic-flowered genera the prolongation departs from a staminal ring which is a donut-shaped area surrounding the style from which the stamens arise. The staminal tube can be scarcely to well-developed and the prolongation can be barely noticable (e.g., in Cariniana parvifolia to conspicuous (as in most other species of the genus).
Only species of Allantoma, Grias, Gustavia, and Cariniana have staminal tubes. The frist three genera possess actinomorphic androecia while those of Cariniana are zygomorphic. The zygomorphy of species of Cariniana differs in that one side of a staminal is prolonged whereas in all other zygomorphic-flowered genera the prolongation departs from a staminal ring which is a donut-shaped area surrounding the style from which the stamens arise. The staminal tube can be scarcely to well-developed and the prolongation can be barely noticable (e.g., in Cariniana parvifolia to conspicuous (as in most other species of the genus).