Ontogeny of the stomata in Gnetum ula Brongn.
Article first published online: 28 JUN 2008
Botanical Journal of the Linnean Society
Volume 68, Issue 2, pages 143–151, February 1974
How to Cite
KAUSIK, S. B. (1974), Ontogeny of the stomata in Gnetum ula Brongn. Botanical Journal of the Linnean Society, 68: 143–151. doi: 10.1111/j.1095-8339.1974.tb01754.x
- Issue published online: 28 JUN 2008
- Article first published online: 28 JUN 2008
- Accepted for publication September 1973
The stomata in Gnetum ula Brongn. occur in large numbers on the abaxial surface of the leaves and are orientated in various directions. A few were seen in some preparations on the adaxial surface also, especially in the region of the midrib.
Stomatal development follows the syndetocheilic type of Florin. According to the terminology of ontogenetic types suggested by Pant, they may be described as mesogenous dolabrate; they are mesoparacytic (rubiaceous) and amphicyclic. In this respect, and in several details, the present findings support the observations of Takeda, and differ rather widely from those of Maheshwari & Vasil.
Twin stomata were also met with frequently, as well as several stomata lying together contiguously. The structural features of these are described and commented upon briefly in the paper.