Common (Translated Scientific) Name: Lewis'' Mock Orange / Common Snowberry Wet Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This riparian shrubland association is found across the Columbia Basin of Washington and adjacent Oregon. It usually occurs on the upper stream terraces of permanent streams, although it can occur in the active floodplain of intermittent streams. This is a 2- to 6-m (6- to 20-foot) tall shrubland community dominated by Philadelphus lewisii. A short, sparse shrub layer of Symphoricarpos albus appears with an herbaceous understory of primarily grasses, including Elymus glaucus, Poa pratensis, and Bromus tectorum. Other woody species that may appear abundantly are Toxicodendron rydbergii, Rosa nutkana, and Clematis ligusticifolia. This is the most productive of the currently recognized Philadelphus lewisii types.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: One of Crowe et al.''s (2002) 10 plots of Philadelphus lewisii shrubland is composed of Philadelphus lewisii (25% cover), Symphoricarpos albus (5% cover), Pseudoroegneria spicata (3% cover) and likely fits here. Other plots from Crowe et al. (2002) do not appear to fit the concept of this type. Most of them might best be placed in the broadly defined ~Philadelphus lewisii Wet Shrubland (CEGL001170)$$. ~Philadelphus lewisii / Symphoricarpos albus Wet Shrubland (CEGL000875)$$ is found on terraces and appears to be distinct from CEGL001170 found in intermittent stream bottoms. The former type is often degraded, with much Poa pratensis.

Similar NVC Types: No Data Available

note: No Data Available