Spirodela polyrhiza Prague 2014 1

描述：

Description: English: Water plant Spirodela polyrhiza from the Botanical Gardens of Charles University, Prague, Czech Republic Čeština: Vodní rostlina závitka mnohokořenná (Spirodela polyrrhiza) v Botanické zahradě Univerzity Karlovy Praha. Date: 5 August 2014. Source: Own work. Author: Karelj. Camera location50° 04′ 14.8″ N, 14° 25′ 11.5″ E View all coordinates using: OpenStreetMap 50.070778; 14.419861.