Delphinium scaposum
{{Short description|Species of plant}}{{Use dmy dates|date=January 2024}}
{{Speciesbox
| image = 2016.05.27 10.41.32 Delphinium scaposum - andrey zharkikh.jpg
| image_caption = Flowers
| image2 = Delphinium scaposum by Margaret Neilson Armstrong.jpg
| image2_caption = Botanical illustration by Margaret Neilson Armstrong
| genus = Delphinium
| species = scaposum
| authority = Edward Lee GreeneGreene
| synonyms =
- Delphinium andersonii var. scaposum {{small|(Greene) S.L.Welsh}}
- Delphinium decorum var. scaposum {{small|(Greene) Huth}}
}}
Delphinium scaposum, the tall mountain larkspur or bare{{nbh}}stem larkspur, is a species of flowering plant in the family Ranunculaceae.{{cite web |url=https://www.wildflower.org/plants/result.php?id_plant=DESC |title=Delphinium scaposum |author=|date=6 February 2023 |website=Plant Database |publisher=Lady Bird Johnson Wildflower Center |access-date=17 January 2024 }} It is native to the desert southwest of the United States, and to Sonora in northwestern Mexico.{{cite POWO |id=275722-2 |title=Delphinium scaposum Greene |access-date=17 January 2024 }} A perennial reaching {{cvt|60|cm|in}}, it prefers dry, gravelly soils, and is "avidly" pollinated by bumblebees and hummingbirds. Its chromosome count is 2n=16.{{Cite web |title=Delphinium scaposum |url=https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=22519 |access-date=2024-09-25 |website=ucjeps.berkeley.edu}}
{{Gallery
|2015.05.08 15.12.25 Delphinium scaposum - andrey zharkikh.jpg|Basal rosette
|2016.05.28 15.49.21 Delphinium scaposum - andrey zharkikh.jpg|Habit
|2015.05.12 07.40.53 Delphinium scaposum - andrey zharkikh.jpg|Bisected flowers
}}