Taxon - Links and literature
IUCN Red List of Threatened Species 2024-1 [107425945]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [as Echium stenosiphon Webb]
Data retrieved on: 29 January 2024
Kew Science - Plants of the World online 2024-05 [874855-1]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [as Echium stenosiphon subsp. lindbergii (Pett.) Bramwell]
Data retrieved on: 30 January 2025
Kew Science - Plants of the World online 2024-05 [77229320-1]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [as Echium stenosiphon subsp. stenosiphon]
Data retrieved on: 1 February 2025
Kew Science - Plants of the World online 2024-05 [115904-1]
Kew Science - Plants of the World online [https://powo.science.kew.org], Facilitated by the Royal Botanic Gardens, Kew [as Echium stenosiphon Webb]
Data retrieved on: 1 February 2025