This course introduces five important pigments of plants. We will collect flowers and foliage for the lab where we will extract and characterize these pigments and stain oil, soap, textiles and make a plant-based tannin ink.
The course introduces four important pigments of plants in addition to the well-known green chlorophyll and orange carotenoids. Ranging from the red lycopene of tomatoes and cayenne peppers to the yellow carotene of carrots. The anthocyanins that make apples and bachelor buttons as well as huckleberries blue. The not so soluble, but medicinally important anthroquinones like hypericine from St Johns Wort. The phlobaphenes or bark dyes which occur in the bark of Sequoia sempervirens and also the red peanut skin, and perhaps, some red seed coloration of American beans Phaseolus vulgaris.
The second part is a plant walk to collect flowers and foliage for the lab in which we will extract and characterize these pigments. Finally we will use a few common plant dyes to color oil, soap, and textiles. We will also make the most common ink type in the history of mankind; tannin ink.
We recommend students have an illustrated book about the wild life flora of the Pacific Northwest (recommended is Pojar and McKinnon “Plants of the Pacific Northwesrt Coast” and R Taylor “Northwest Weeds”) to bring it. Some handouts will be provided. You should also bring a hand lens, a simple folder or plant press to collect plant samples for later identification or preservation).
Please note this course is both in the classroom and in the woods. Please wear or bring closed-toed shoes appropriate for walking in the woods.
Bastyr University is housed in an older facility with fluctuating interior temperatures; it is advisable to wear layers. Also, Bastyr is a “fragrance-free” campus.
Other Upcoming Botany at Bastyr Community Education Courses:
Plant Identification - July 13
Plant Signatures - July 20
Herbal Remedies - July 27
Plant Fragrances - August 10
Purchase all 5 courses by July 13th for $280 and save 20% off the public rate. Please note, if you register for the full package, the last day for a refund is June 28, 2019.
Continuing and Community Education Cancellation Policy
Instructor: Rainer Stahlberg, PhD
Rainer Stahlberg is a plant researcher. He received a PhD in plant biology in 1979 working on electrical signals in plants. Rainer taught botany in Germany (Humboldt University Berlin), Russia (st. Petersburg), and the United States (University of Washington and Bastyr University). He also taught Botany together with the legendary Arthur Kruckeberg to public audiences enrolling for weekend classes with the North Cascade Institute. Arthur introduced Rainer to the plants of the Pacific Northwest from 1998 to 2006. He also imparted his philosophy that science does not exist in a ivory tower or university and that it is the duty of its participants to report back to and serve the public. Rainer has taught botany to kids; major and non-major students and normal people and he I developed a hands-on approach that can be understood by anybody anywhere.