1. Inflorescences on peduncles arising from branches of the previous year; shrub usually over 1 m tall; known only from Keweenaw Co.

C. sanguineus

1. Inflorescences on peduncles or branchlets of the current year; shrub less than 1 m tall; widespread.

2. Inflorescences axillary, on peduncles from the upper (2–) 3–7 (–10) nodes (of well developed shoots); widest leaf blades 2.1–5 (–6) cm broad.

C. americanus

2. Inflorescences terminal on leafy branches, occasionally with 1–4 additional lateral peduncles present on robust plants; principal leaf blades 1–2.2 (–2.5 or very rarely 3.5) cm broad.

C. herbaceus

All species found in Ceanothus

Ceanothus americanusNEW JERSEY TEA 
Ceanothus herbaceusNEW JERSEY TEA 


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 19, 2018. http://www.michiganflora.net/genus.aspx?id=Ceanothus.