The flora of Périgord in South-West France is abundant and diverse. In this blog you can find, in pictures, brief encounters with several hundreds of wild flowers and plants as they grow here in French Perigord. Following the seasons other species are added. An index of scientific and English names you find below on the right.

Corine Oosterlee is a botanist and photographer and she offers guided Botanical Walks and other activities around plants and vegetation in nature in Perigord. Do you want to know more? On www.baladebotanique.fr you can find more information. For Corine's photography see www.corineoosterlee.com. Both websites also in English.

Enjoy!




October 3, 2015

French Bartsia


You need some chance to find French Bartsia (Odontites jaubertianus). It flowers only at the end of September and you can't call it exactly conspicuous. And it does not grow on the side of a walking path, it prefers less accessible spots like agricultural fields or wastelands. And when it does not have flowers, it really looks very much like other Bartsias.






It is endemic in France, it only grows here. It was thought that French Bartsia had disappeared from the Dordogne département. But no, at the boundary of a harvested field of cereals it still grows in crowds. Here a few dozens of plants, a bit hidden in the vegetation around it.






It looks very much like  Yellow Bartsia, the same rather stiff reddish stems with small opposite leaves. Maybe French Bartsia is a bit stockier. There are French Bartsias with pale yellow or salmon pink flowers, sometimes mixed with plants with darker yellow and orange tinted flowers. This is normal, French Bartsia comes in two tones.






Probably because its forebears, Yellow Bartsia and Red Bartsia, have different colours. It is an allopolyploïd. Which means that, a long time ago during hybridization, the new species kept or even doubled or quadrupled all the chromosomes of its two ancestors. We think it has the possibility to show any of those colours and that every plant 'chooses' its colour according to circumstances.










The flowers are slightly more closed than those of other Bartsia species. Also a bit hairier, but you need a looking-glass to see that.