2001•Journal of Systematics and EvolutionRequires access

Pollen morphology of the tribe Cynoglosseae of Boraginoideae (Boraginaceae) in China

Jiaxi Liu, Yulong Zhang, Ning Jian-Chang, Yunyun Zhao, Yaxuan Li, Jingmei Zhang

Abstract

Pollen morphology of 16 Chinese species representing 7 genera in the tribe Cynoglosseae of Boraginoideae (Boraginaceae) was examined under LM and SEM, and 5 species under TEM. A key to the genera is given based on pollen morphology. Bothriospermum, without endocingulus, may be a primitive genus is this tribe, and its pollen morphology is more similar to that of Eritrichieae than to Cynoglosseae, thus it seems more reasonable to put it into Eritrichieae. Solenanthus may be the most advanced genus in the tribe Cynoglosseae for its pollen grains of subisopolar and ovoid shape.

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Key concepts: Boraginaceae, Pollen, Tribe, Genus, Key (lock), Morphology (biology), Biology, Botany