Impatiens capensis Meerb. (1775) has been naturalized in the British Isles since the early 19th century. Though native to North America, the species is now established along waterways of lowland Britain and continues to increase its distribution across northern and central Europe. There have been two homonyms of I. capensis for a further two plant species with different sporophytic chromosome number. Impatiens capensis Thunb. (1794) is native to southern Africa, has a sporophytic chromosome number of 2n = 14, and now carries the accepted scientific species name I. duthieae L.Bolus (1921). Impatiens capensis Boj. ex Baker (1883) is native to Madagascar, has a sporophytic chromosome number of 2n = 14, and now carries the accepted scientific species name I. firmula Baker (1883). Karyological analyses of plants from three geographically separated I. capensis Meerb. populations from the River Thames Valley proved the sporophytic chromosome number of 2n = 20 and estimated the mean sporophytic unreplicated nuclear DNA amount of 2C ≌ 1.55 pg, which corresponds to a genome size of approximately 1.51264 Gbp per nucleus.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.