[Mountain-trumpets: The Genus Collomia in Mt. Adams Country]

Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet

Collomia heterophylla

Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet: Collomia heterophylla

The photo above shows varied-leaf collomia as seen in coniferous woods to the west of Laurel Road, Conboy Lake NWR.........June 15, 2008. Note the variety of leaf shapes, which lend this species its common name.

Flower of Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet: Collomia heterophyllaCharacteristics:

Varied-leaf collomia is an annual with one to several simple to branched stems from the base, rising from 5-40 cm high. The leaves are mainly alternate along the stems. The lower leaves are pinnatifid (compound pinnate) with the blades up to 3.5 cm long and 2 cm wide. The leaves of the middle and upper stems become progressively less cleft, and those found below the flowers are entire or toothed with short petioles.

The corollas are pink, lavender, or white, with a long tube from 8-17 mm long which flares only slightly. The petal lobes spread at a right angle to the tube and are 3-4 mm long. The calyx is much shorter than the tube.


Habitat:

Varied-leaf collomia is found in moist open woods, forest openings, and along loose streambanks at low elevations.


Range:

Varied-leaf collomia is found from southern British Columbia south to the west of the Cascade Mts. to California. It is also found in northern Idaho.


Stem leaf of Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet: Collomia heterophylla

The photo above shows a deeply cut stem leaf of varied-leaf collomia as seen in coniferous woods to the west of Laurel Road, Conboy Lake NWR..........June 15, 2008.

Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet: Collomia heterophylla

Varied-leaf collomia blooming along the Buck Creek Trail #54 in open balds under Oregon white oaks atop the north rim of the White Salmon River canyon, Mt. Adams, Gifford Pinchot National Forest.......May 29, 2020.


Variableleaf Collomia, Varied-leaf Collomia, Variable-leaf Mountain-trumpet: Collomia heterophylla

The photo above shows the long, narrow corolla tube extending beyond the green calyx lobes of varied-leaf collomia as seen in coniferous woods to the west of Laurel Road, Conboy Lake NWR.........June 15, 2008.

Paul Slichter