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Published In: Species Plantarum 2: 579. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 8/25/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Introduced

 

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9. Galeopsis L. (hemp nettle)

Ten species, Europe, Asia; introduced in the New World.

The stamens in the genus are unusual in their morphology and dehiscence. The two anther sacs are attached to the expanded connective in a vertical orientation and spreading from one another. Each anther sac dehisces by two valves in somewhat of a clamshell pattern. The larger valve of each pair, which is glabrous, dehisces away from the other anther sac of the stamen and becomes oriented parallel to the filament. The smaller valve of each pair, which is densely bearded with minute, bristly hairs, dehisces toward the other anther sac (the two smaller valves of the pair of anther sacs become oriented parallel to one another and are positioned more or less erectly after dehiscence). Although the anthers themselves usually are white or purplish-tinged, the pollen is yellow.

 
 
 
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