Abstract Detail

Systematics Section / ASPT

Heo, Kyeong-In [1], Lee, Sangtae [1].

Palynotaxonomic study of tribe Stewartieae (Theaceae).

Tribe Stewartieae (Theaceae) consists of two genera: evergreen Hartia and deciduous Stewartia. Pollen morphology was investigated from 6 species of Hartia and 11 species of Stewartia.
Hartia had reticulate or microreticulate surface with psilate or foveolate margo, round or acuminate colpus tip, and no operculum. Stewartia (Asian species) had rugulo-microreticulate surface with constricitive rugulo-microreticulate margo, acuminate colpus tip, and distinct or obscure operculum. North American species of Stewartia, however, exhibited some Hartia characteristics: reticulate or microreticulate surface in S. malacodendron; round colpus in S. ovata; and no operculum in both species.
The pollen morphology suggested an ancestral and intermediate position of North American Stewartia and an advanced position of Hartia. These positions were discussed along with the morphological as well as molecular results by previous authors.

1 - Sungkyunkwan University, Department of Biological Science, 300 Chunchun-dong, Jangan-gu, Suwon, Gyeonggido, 440-746, Korea

Keywords:
pollen
systematics
Theaceae
Stewartia
Hartia.

Presentation Type: Poster
Session: 32-107
Location: Special Event Center (Cliff Lodge)
Date: Tuesday, August 3rd, 2004
Time: 12:30 PM
Abstract ID:390