Key to Holodiscus discolor
View taxon page for Holodiscus discolor
(For a list of species in Holodiscus discolor, use the above link.)
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.
1. Leaf blade 
Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.
glabrous, shiny adaxially, flushed red, base generally wedge-shaped; on
serpentine ..... var. cedrorum 1' Leaf blade sparsely to densely hairy adaxially, dull, not flushed red, base wedge-shaped or
truncate 
Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so.
to rounded; generally not on serpentine
2. Leaf blade 1.5–8 cm,
teeth toothed, base generally truncate to rounded;
inflorescence 5–25 cm, 5–25 cm wide, branches generally many
..... var. discolor 2' Leaf blade 0.3–3 cm, teeth
entire 
Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
, above middle, base generally wedge-shaped; inflorescence 2–8 cm, 1.5–5 cm wide, branches 0–few
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