Table 1. Morphological comparison of Coptis trifolia from the Aleutian Islands, the rest of North America, and Asia.

	Aleutians	Other N. Amer.	Asia
Petiolules (mm)	0.3-0.8	0.5-3.5	0.5-3
Sepals (mm wide)	1.7-2.9	1-3.6	1.8-4.5
Nectaries (L:W ratio)	0.9-1.3	0.8-1.3	0.9-1.6
Follicle bodies (mm)	3.9-5.3	4-7	4.8-5.5
Follicle beaks (mm)	3-3.5	2.3-3.8	2.2-3