Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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POLEMONIACEAE

PHLOX FAMILY

Robert W. Patterson, Family Editor

Annual, perennial herb, shrub, vine
Leaves simple or compound, cauline (or most in basal rosette), alternate or opposite; stipules 0
Inflorescence: cymes, heads, or flowers solitary
Flower: calyx generally 5-ribbed, ribs often connected by translucent membranes that are generally torn by growing fruit; corolla generally 5-lobed, radial or bilateral, salverform to bell-shaped, throat often well defined; stamens generally 5, epipetalous, attached at same or different levels, filaments of same or different lengths, pollen white, yellow, blue, or red; ovary superior, chambers generally 3, style 1, stigmas generally 3
Fruit: capsule
Seeds 1–many, gelatinous or not when wet
Genera in family: 19 genera, 320 species: Am, n Eur, n Asia; some cultivated (Cantua, Cobaea (cup-and-saucer vine), Collomia, Gilia, Ipomopsis, Linanthus, Phlox )
Recent taxonomic note: *See also revised taxonomy of Porter and Johnson 2000 Aliso 19(1):55–91; Porter 1998 Aliso 17:83–85
.

GILIA

Alva G. Day

Annual, perennial herb, generally erect
Stem glabrous, hairy, glandular, or cobwebby
Leaves simple, generally alternate; basal generally in rosette, toothed, pinnately lobed, or entire; cauline generally reduced; leaf tips, calyx lobes acute, acuminate, or needle-like
Inflorescence: flowers solitary or clustered, 1–many in axils of bracts
Flower: calyx membranous between ribs, membrane splitting or expanding; corolla > calyx, lobes generally ovate
Fruit generally ovoid; chambers 3, valves separating from top
Seeds 3–many, brown, generally gelatinous when wet
Species in genus: ± 70 species: w North America, South America
Etymology: (Felipe Gil, 18th century Spanish botanist)

Native

G. ochroleuca M.E. Jones


Stem: branches generally spreading from below, 5–30 cm, glabrous or cobwebby, generally glandular in inflorescence
Leaves: lower in rosette, 1–2-pinnate or entire, axis, lobes generally linear, ascending; cauline palmate; inflorescence leaves generally entire
Inflorescence: pedicels thread-like, widely spreading, generally in subequal pairs, glandular
Flower: calyx 2–4 mm, ribs and lobes linear, membrane colorless; corolla tube purple, throat well expanded, blue in upper half, yellow below, lobes pink to white; stamens slightly exserted
Fruit 2–5 mm; valves detaching
Seeds 3–15
Ecology: Open, generally sandy places
Elevation: 200–2500 m.
Bioregional distribution: Inner South Coast Ranges, Transverse Ranges, Peninsular Ranges, White and Inyo Mountains, w Desert
Distribution outside California: Baja California

Native

subsp. ochroleuca

Plant gray-green
Stem: branches spreading, < 30 cm, glabrous, glaucous below inflorescence, glabrous beneath flowers
Leaf slightly cobwebby, 1–2-pinnate, lobes 3–10 mm, ascending; inflorescence leaves palmate
Flower: calyx glabrous; corolla 4–6 mm, tube included, throat = tube; style slightly exserted, stigmas near anthers
Fruit spheric
Chromosomes: 2n=18
Ecology: Desert sand
Elevation: 700–1500 m.
Bioregional distribution: White and Inyo Mountains, w Mojave Desert
Flowering time: Apr–Jun

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