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Polemoniaceae, the phlox family are mostly perennial or annual
herbs or subshrubs with simple leaves (rarely compound). The
flowers are perfect, five-merous and regular. Petals are fused
to form a flat and round, or bell-shaped or funnel-shaped
corolla. The 5 stamens are fused to the corolla tube and alternate
with the 5 corolla lobes. The fruit is derived from a superior
3-celled ovary and at maturity becomes a 3-celled capsule.
The leaves are alternate or opposite, simple or compound.
Phlox and Gilia are common in western forest and steppe communities
and are also used in cultivated flower beds.
This is a quite small family of about 20 genera and 300 species
worldwide, mostly temperate perennials, many in Western U.S.
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Guide to Identify Presented Species of the
Phlox Family
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LEAVES ALTERNATE, ENTIRE OR TOOTHED
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Collomia debilis - Alpine Mountain-trumpet
Perennial, 10-20 cm tall, with many creeping stems. Rocky mountain slopes.
Flowers pinkish to white, 2-3 cm long, trumpet-shaped with long tube.
Leaves crowded toward the top of the stem, up to 3 cm long and 13 mm wide.
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Collomia linearis - Narrow-leaved Mountain-trumpet
Annual, 10-60 cm tall, simple to branched. Varied habitats and elevations.
Flowers pink or bluish to white, 8-15 mm long, several in congested clusters.
Leaves numerous, lanceolate or linear, entire, 1-7 cm long, 1-13 mm wide.
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LEAVES ALTERNATE, PINNATELY DIVIDED INTO FEW NARROW SEGMENTS
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Ipomopsis spicata - Spiked Gilia
Perennial, 5-30 cm tall, thinly cobwebby-woolly-hairy. Dry, open places.
Flowers white, about 1 cm long, numerous in a dense, rounded top cluster.
Leaves 3-parted or pinnatifid, 1-6 cm long, with very narrow segments. |
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LEAVES ALTERNATE, PINNATELY DIVIDED INTO MANY SHORT SEGMENTS
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Polemonium viscosum - Sticky Jacob's Ladder
Perennial up to 20 cm tall, sticky glandular-hairy. Rocky places, mountains.
Flowers blue, funnel-shaped, 17-25 mm long, longer than wide.
Leaves mainly basal, with numerous small leaflets that are 2- to 5-cleft to base. |
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LEAVES OPPOSITE, NARROW AND OFTEN VERY SMALL
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Phlox
albomarginata - White-edged Phlox
Cushioned perennial, up to 5 cm tall, glandular. Rocky places, high mountains.
Flowers white, 15-20 mm wide, solitary on stem tips. Style 5-8 mm long.
Leaves broadly lanceolate, 2-7 mm long and 1-2.5 mm wide, thick-edged. |
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Phlox
diffusa - Spreading Phlox
Perennial, tufted to upright, up to 10 cm tall. Rocky slopes in the mountains.
Flowers white, about 15 mm wide, solitary on stem tips. Style 4.5-8 mm long.
Leaves needle-shaped, pointed, mostly hairless, 5-20 mm long, 1-2 mm wide. |
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Phlox
gracilis - Slender Phlox
Annual, simple or branched, up to 30 cm tall, short-hairy. Open places.
Flowers pink, 5-15 mm long, in pairs. The 5 lobes slightly notched.
Leaves mostly elliptic, up to 5 cm long and 8 mm wide, the upper alternate. |
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Phlox
hoodii - Moss Phlox
Perennial, mat- forming cobwebby-hairy. Dry, open places in the foothills.
Flowers white, 10-15 mm wide, solitary on stem tips. Style 2-5 mm long.
Leaves crowded, linear and stiff, 4-10 mm long and 0.5-1 mm
wide. |
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Phlox
longifolia - Long-leaved Phlox
Perennial, 10-40 cm tall, often woody at the base. Dry, open rocky places.
Flowers white, 2-3 cm wide, in clusters. The style
is 6-15 mm long.
Leaves linear, mostly 1.5-8 cm long and 1-3 mm wide. |
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Phlox
multiflora - Rocky Mountain Phlox
Mat-forming perennial, loosely almost erect, up to 10 cm tall. Mountains.
Flowers white, about 2 cm wide, few on stem tips. The style
is 5.5-8 mm long.
Leaves slightly rough-surfaced, linear, 12-30 mm long and 1-2 mm wide. |
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| Alphabetical listing with links to presented species of the Phlox family: |
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| Scientific Name |
English Name |
Swedish Name |
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Collomia
Ipomopsis
Phlox
Polemonium
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Mountain-trumpet
Gilia
Phlox
Jacob's Ladder
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