California Botanical Society

1 Avicennia germinans

2 Hofmeisteria fasciculata

3 Bajacalia crassifolia
Photos: Debra Valov


The Society welcomes membership by all individuals interested in Western American botany. Subscriptions to Madroño are available for institutions. Membership dues and institutional subscriptions support the publication of Madroño, the leading botanical journal in Western North America, and our grants and education programs. All individual members receive Madroño free, in print and online, as well as the Society's digital newsletter Nemophila. Membership and institutional subscriptions are based on the volume year of Madroño, which follows the calendar year.

Current membership categories and rates are as follows:

  • Regular: $50
  • Family: $55
  • Emeritus (Academic faculty, CalBotSoc member for 10 years or more and now retired): $35
  • Student (seven years maximum eligibility; must provide copy of student ID or advisor's signature): $30
  • Postdoc: $35
  • Life: $1000

Institutional subscriptions to Madroño are $85 per year.

Join or Renew Online

For multiple-year subscription, please adjust “Quantity” on your cart.

Membership Type
New Membership or Renew
Printed Madroño opt-out

Make a Contribution

Adjust the “Quantity” to match your donation amount.

Paul Silva Student Research Fund

Botany Education and Outreach Programs
Annetta Carter Memorial Fund
Endowment Fund

Join or Renew by Mail

Please send your membership form and dues payment, as well as any requests for changes of address and Madroño delivery inquiries, to the Society's Membership Chair:

Renewal Form

Rachael L. Olliff Yang
California Botanical Society
c/o Jepson Herbarium
1001 Valley Life Sciences Building
Berkeley, CA 94720 - 2465

Nominate a Student for Membership!

Students new to the California Botanical Society are eligible for one year of free membership. To nominate a student for a free membership, please send their name and email address to


For other questions, please contact the Society's Membership Chair at the address above.


Nemophila, is a digital newsletter and forum covering topics of interest to our members, including upcoming meetings, new botanists in the state, and articles about plants and the environment.


Nemophila, Autumn 2015


Nemophila, Winter 2016

Nemophila, Spring 2016

Nemophila, Summer 2016

Nemophila, Fall 2016


Nemophila, Winter 2017

Nemophila, Summer 2017


Nemophila, March 2018

Nemophila, May 2018