Collomia grandiflora is a western North American annual plant in the phlox family (Polemoniaceae), known by the common names grand collomia, large-flowered mountain trumpet, and large-flowered collomia.Sierra Nevada Wildflowers, Karen Wiese, 2nd Ed., 2013, p. 106 It usually appears in sandy habitats and is cultivated as an ornamental.
Description The plant grows to about and produces an erect, hairy or fuzzy stem which may be red to green in color. Arranged at wide intervals along the stem are long, lance-shaped leaves growing to about , the lowermost sometimes toothed along the edges. Atop the stem is an inflorescence of several flowers in white to yellow or orange. Lower flowerheads may branch from the axils of the alternate leaves. Each tubular, flat-faced flower is 2 or 3 cm wide with five fused and curving light-colored petals and five stamens tipped with anthers which bear blue pollen. The fruit is a capsule containing sticky seeds.
Taxonomy Collomia grandiflora was given its scientific name by John Lindley, who gave credit to David Douglas. It is classified in the genus Collomia as part of the Polemoniaceae family. It has no accepted subspecies or varieties, but has several among its synonyms.
Table of Synonyms Name Year Rank Notes Collomia grandiflora var. axillaris 1911 variety = het. Collomia grandiflora f. axillaris 1944 form = het. Collomia grandiflora var. cryptantha 1870 variety = het. Collomia grandiflora var. cryptantha 1869 variety = het. Collomia grandiflora f. cryptantha 1944 form = het. Collomia grandiflora subsp. diffusa 1906 subspecies = het. Collomia grandiflora f. diffusa 1944 form = het. Collomia grandiflora proles europaea 1937 proles = het., not validly publ. Collomia grandiflora f. scabra 1944 form = het. Collomia grandiflora var. tenuiflora 1845 variety = het. Collomia grandiflora var. tenuiflora 1845 variety = het. Collomia grandiflora f. tenuiflora 1944 form = het. Collomia scabra 1910 species = het. Gilia grandiflora 1882 species ≡ hom., nom. illeg., homonym. post. Gilia grandiflora var. axillaris 1918 variety = het. Gilia grandiflora var. diffusa 1894 variety = het. Notes: ≡ homotypic synonym; = heterotypic synonym
Uses Some Native Americans used the roots and leaves for medicinal purposes.
References
External links Jepson Manual Treatment Photo gallery