Plant conservationists have discovered new populations of a species of plantain (Plantago princeps var. anomola) known locally as the Laukahi. The discovery was made during an aerial survey of the National Tropical Botanic Garden nature reserve, Limahuli, Hawaii, using an SUAV. The plant is listed as Critically Endangered under the IUCN Red List. Here is a short video.
Further details can be found here https://ntbg.org/news/rare-plant-discoveries?fbclid=IwAR0S2qi4aODadTt4UhwlKjr3I6_EkhlbdcCPHggBtBM37-TT6Ekb7P7mup0