Ipomopsis longiflora (Torr.) V.E. Grant
Long-flowered Trumpet Gilia, Flaxflowered Gilia, Long-flowered Gillia, Long-flowered Skyrocket, White-flower Skyrocket
Long-flowered trumpet gilia appears in near-desert conditions, in dry plains and mesas and shrublands, at elevations of 1000-8000' (304-2438 m). It is native to the southwestern United States.
Plants: 10-39" (25-100 cm) tall, sometimes erect, often sprawling and heavily branched. Stems are smooth or with a few hairs. Annual or biennial.
Leaves: Leaves are as thin as threads, barely distinguishable from equally threadlike stems.
Flowers: These might be record-holders for long-necked trumpet-shaped flowers. The tubes are up to 1-1¾" (3-5 cm) long and about ¹/₃₂" (1 mm) in diameter, looking improbably delicate. At the end, five pale blue-violet or white petals flare out. They are pollinated by moths with, one presumes, extraordinarily long tongues. Flowers appear any time from spring to fall, after rains.
Fruits: Capsules are ¼-½" (7-15 mm) long.
Ipomopsis sp. on Wildflowers, Ferns & Trees of Colorado, New Mexico, Arizona, and Utah
Ipomopsis longiflora on southwestdesertflora.com
Ipomopsis longiflora at the Lady Bird Johnson Wildflower Center
Ipomopsis longiflora on SEINet—the Southwest Environmental Information Network
Ipomopsis longiflora description by Thomas H. Kent, last updated 2 Jan 2019.