Phlox longifolia

{{Short description|Species of plant}}{{Use dmy dates|date=January 2025}}

{{Speciesbox

| image = Phloxlongifolia.jpg

| image_caption = Habit

| image2 = Phlox longifolia - longleaf phlox - 53020133581.jpg

| image2_caption = White-flowered individuals

| genus = Phlox

| species = longifolia

| authority = Nutt.

| synonyms_ref =

| synonyms = {{Collapsible list|

• Armeria linearifolia {{small|(Hook.) Kuntze}}
• Phlox cernua {{small|E.E.Nelson}}
• Phlox cortezana {{small|A.Nelson}}
• Phlox grahamii {{small|Wherry}}
• Phlox grayi {{small|Wooton & Standl.}}
• Phlox humilis {{small|Douglas ex Benth.}}
• Phlox linearifolia {{small|(Hook.) A.Gray}}
• Phlox linearifolia var. longipes {{small|M.E.Jones}}
• Phlox longifolia subvar. brevifolia {{small|(A.Gray) A.Gray}}
• Phlox longifolia f. brevifolia {{small|A.Gray}}
• Phlox longifolia subsp. brevifolia {{small|(A.Gray) H.Mason}}
• Phlox longifolia var. brevifolia {{small|(A.Gray) A.Gray}}
• Phlox longifolia subsp. calva {{small|Wherry}}
• Phlox longifolia var. calva {{small|(Wherry) M.Peck}}
• Phlox longifolia var. compacta {{small|(Brand) M.Peck}}
• Phlox longifolia subsp. compacta {{small|(Brand) Wherry}}
• Phlox longifolia subsp. cortezana {{small|(A.Nelson) Wherry}}
• Phlox longifolia var. filifolia {{small|A.Nelson}}
• Phlox longifolia var. humilis {{small|(Douglas ex Benth.) Brand}}
• Phlox longifolia subsp. humilis {{small|(Douglas ex Benth.) Wherry}}
• Phlox longifolia f. humilis {{small|(Douglas ex Benth.) Voss}}
• Phlox longifolia var. linearifolia {{small|(Hook.) Brand}}
• Phlox longifolia subsp. longipes {{small|(M.E.Jones) Wherry}}
• Phlox longifolia var. longipes {{small|(M.E.Jones) M.Peck}}
• Phlox longifolia subsp. marginata {{small|Brand}}
• Phlox longifolia var. puberula {{small|E.E.Nelson}}
• Phlox longifolia var. stansburyi {{small|(Torr.) A.Gray}}
• Phlox longifolia subsp. typica {{small|Wherry}}
• Phlox puberula {{small|(E.E.Nelson) A.Nelson}}
• Phlox speciosa var. linearifolia {{small|Hook.}}
• Phlox speciosa var. stansburyi {{small|Torr.}}
• Phlox stansburyi {{small|(Torr.) A.Heller}}
• Phlox stansburyi var. brevifolia {{small|(A.Gray) E.E.Nelson}}
• Phlox stansburyi subsp. compacta {{small|Brand}}
• Phlox stansburyi subsp. eustansburyi {{small|Brand}}
• Phlox stansburyi subvar. microcalyx {{small|Brand}}
• Phlox stansburyi var. puberula {{small|(E.E.Nelson) Brand}}
• Phlox stansburyi subsp. superba {{small|(Brand) Wherry}}
• Phlox superba {{small|Brand}}
• Phlox tenuis {{small|Wooton & Standl.}}
• Phlox viridis subsp. compacta {{small|(Brand) Wherry}}
• Phlox viridis subsp. longipes {{small|(M.E.Jones) Wherry}}
• Phlox visenda {{small|A.Nelson}}

}}}}

Phlox longifolia, the longleaf phlox, is a species of flowering plant in the family Polemoniaceae.{{cite web |url=https://www.wildflower.org/plants/result.php?id_plant=PHLO2 |title=Phlox longifolia Nutt. Longleaf Phlox, Long-leaf Phlox |author=|date=23 February 2023 |website=Plant Database |publisher=Lady Bird Johnson Wildflower Center |access-date=21 January 2025 }} It is native to British Columbia and the western and west-central United States, but is absent west of the Cascades.{{cite POWO |id=193549-2 |title=Phlox longifolia Nutt. |access-date=21 January 2025 }} A perennial subshrub reaching {{cvt|15|in|cm}} but usually shorter, it is typically found in dry, open situations such as slopes, rocky areas, and plains.