Donate to support our projects ~ And purchase a membership to our Ethnobotany Library

Botanical Dimensions is a fiscally sponsored project of the nonprofit INQUIRING SYSTEMS, Inc. EIN: 94-2524840, so your donation is tax-deductible under the law.


for the PayPal link via INQUIRING SYSTEMS.

Or go directly to PayPal here: 

Donate - Inquiring Systems for BD

Or you may just mail a check or money order payable to Inquiring Systems/Botanical Dimensions. Mail it to BD at PO Box 807, Occidental CA 95465.

Include your email information and zip code, to be kept informed on our projects and future events.

Our projects that need your support are: 

ALMOST VISIBLE – A documentary film project about Mazatec culture


Hawaii Forest-Garden

General support for Botanical Dimensions 

You may designate a project in the NOTE field when donating. For example, “To the Mazatec Project” or “Almost Visible film.” All donations that are not designated to a specific project will be used for the general needs of Botanical Dimensions.


All donations of $35 or more entitle you to membership to the Ethnobotany Library (see Membership Information below).


Membership Levels:

Individual – $35/year

Household (two people at the same address) – $60/year

Organizational/Business – $100/year

Lifetime Membership- one time donation of $500 or more


We so appreciate your support! We have various long-term projects that survive on donor support. Please check back regularly to see what new projects and opportunities are here for your interest.


MEMBERSHIP INFORMATION: A membership to Botanical Dimensions’ Ethnobotany Library is yours for a donation of $35 or more. Join our community of fascinating people who love to study amazing plants and their uses. Members receive these benefits: you are invited to use the Library any time it is open, you will receive a discount on classes taught by Kathleen Harrison, you may borrow books from our lending shelf, and you will be invited to members-only film nights and other special events. 

Note that the Ethnobotany Library is closed for now (2020), until it is safe to open again. Events will begin online in early 2021.

You may also offer a gift membership to a friend or family member. In the NOTE field on our PayPal page, write “gift for Name” and their email, and we will let them know they have received a gift. 


The Ethnobotany Library in Occidental, north of San Francisco, is our headquarters and a remarkable site where you may visit and handle real books, which are, in fact, made from plants and about plants and plant knowledge! Or the books are about mushrooms or human cultures that know nature, and much more. 1400+ volumes of fascinating writing.

We host an annual Book Sale & Swap. The most recent one was in September, 2020.