Lupinus diffusus Nuttall. Common name: Blue Sandhill Lupine. Phenology: Mar-May; Jun-Jul. Habitat: Longleaf pine sandhills, sandy roadsides. Distribution: Se. NC south to Panhandle FL, west to s. MS.
Origin/Endemic status: Endemic
Taxonomy Comments: We concur with Duncan & McCartney (1992) in recognizing L. cumulicola Small of peninsular FL as distinct from L. diffusus. Moreover, Atchison et al. (2014) showed that at least one additional taxon (here listed as Lupinus species 1) should be segregated from L. diffusus s.l.
Synonymy ⓘ: = Bridges & Orzell (2024a), Bridges et al. () (in prep); < Lupinus diffusus Nutt. — Fl3, FNA11.1, K4, RAB, S, S13, SE3, WH3, Isely (1998); Lupinus diffusus Nutt. — (basionym)
Links to other floras: < Lupinus diffusus - FNA11.1
Heliophily ⓘ: 9
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Horticultural Information
Intro: Erect and clumped short-lived perennial of sandhills and sandy roadsides.
Stems: Stems branched from the base, covered with silky hairs.
Leaves: Leaves alternate but clustered at base of stem, petiolate, elliptic, 2 1/2-6 in. long, covered with silky hairs.
Inforescence:
Flowers: Flowers in erect, crowded terminal spikes; brilliant blue to purplish; with typical pea-flower shape, the "banner" petal bearing a white patch.
Fruits: Fruit an elongated, flattened pod.
Comments:
Height: 8-24 in.
plant sale text:
bloom table text:
description: Erect and clumped short-lived perennial of sandhills and sandy roadsides.
stems: Stems branched from the base, covered with silky hairs.
leaves: Leaves alternate but clustered at base of stem, petiolate, elliptic, 2 1/2-6 in. long, covered with silky hairs.
inflorescence:
flowers: Flowers in erect, crowded terminal spikes; brilliant blue to purplish; with typical pea-flower shape, the "banner" petal bearing a white patch.
fruits: Fruit an elongated, flattened pod.
comments:
cultural notes:
germination code:
native range: southeastern United States