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Elisabeth C. Miller Library

Keyword: Medicinal plants

Dragon’s Blood and herbal remedies

Someone told me about an herbal remedy called Dragon’s Blood which is made of the resin of Daemonorops draco. It’s supposed to be good for relief from pain and headaches. Can you tell me more about the plant, including its medicinal uses?

 

The plant in question, Daemonorops draco, is a type of palm (Family: Arecaceae). Here is the USDA Germplasm Resources Information Network page about this plant.

The common name Dragon’s Blood can refer to a number of different plant resins (such as those derived from Dracaena cinnabari, Dracaena draco, and Croton). The product you mention says it is derived from the palm Daemonorops draco. The resin of this plant has a history of use in folk medicine. Some of the plants are on the IUCN Red List of Threatened Species (Dracaena cinnabari is listed as vulnerable, as of 2009). This may be of interest to you because often the products you find for sale are not well-regulated, and there may be no way of verifying that the list of plant ingredients is either valid or complete.

Here is an excerpt:
“Few commodity dealers properly distinguish the various botanical origins of Dragon’s Blood items, and over-exploitation is starting to threaten some sources.”

As for medicinal and other uses of substances called Dragon’s Blood, here is more information from Cropwatch.org:

“The term ‘Dragons Blood’ refers to a product obtained from the resin layer consisting of diterpene acids found on the surface of fruits of the climbing palms of the Daemonorops genus found in SE Asia, and often sold out of Sumatra, Malaya & Borneo. These reddish resinous products (usually encountered as granules, powder, lumps (‘cakes’), or sticks (‘reed’) used in folk medicine as an astringent and for wound healing etc., and in other applications for colouring essential oils red to dark brown, in varnishes, staining marble, for jewelry and enameling work, and for photo-engraving. Mabberley (1998) suggests Dragons Blood was produced originally from Dracaena cinnabari, later from D. draco and more recently from Daemonorops spp.; Zheng et al. (2004) confirm this view and suggest substitutes for Dracaena spp. include Pterocarpus spp., Daemonorops draco and Croton spp.”

There is also an article by Jane Pearson published by the Royal Botanic Gardens at Kew (2002) on the uses of Dragon’s Blood.

Excerpts:
“The term ‘Dragons Blood’ is interchangeably used to refer to plants from three quite different families: Dracaena cinnabari (Socotra) and Dracaena draco (Canary Islands) in the Dracaenaceae family; the palm genus Daemonorops (Malaysia), and the genus Croton (South America) in the Euphorbiaceae
family. […] Although Daemonorops resin is similar in appearance, its origin and preparation are different to Dracaena resin. The fruits are covered in small imbricate scales through which the resin exudes, forming a brittle, red resinous layer on the outside of the fruits. Collection occurs just before the fruit is fully ripe. […] Although used in the same way as Dracaena, the powdered form of Daemonorops was used extensively, especially in America, as an acid resist by photo-engravers up until the 1930s. It also appears to be used in both traditional Chinese medicine and Chinese herbal folk medicine. Daemonorops is traditionally used to stimulate the circulation, promote tissue regeneration by aiding the healing of fractures, sprains and ulcers and to control bleeding and pain.” [My note: Daemonorops draco is referred to as Xue Jie in Chinese medicine.]

Please note that we are not medical professionals, so if you are considering using a substance which claims to contain Daemonorops draco, you should consult your healthcare provider. However, I can tell you that there are ongoing concerns about contamination of patented herbal remedies. University of Minnesota has information on traditional Chinese herbal medicine and related safety concerns.

Pacific Northwest Medicinal Plants: Identify, Harvest, and Use 120 Wild Herbs for Health and Wellness

[Pacific Northwest Medicinal Plants] cover

Can plants heal our bodies? Searching for answers to this basic question, Scott Kloos provides a revealing excursion in “Pacific Northwest Medicinal Plants: Identify, Harvest, and Use 120 Wild Herbs for Health and Wellness”, published by Timber Press in 2017. This comprehensive field guide and reference work covers Alaska, British Columbia, Oregon, Washington, and Northern California.

Kloos shares what he has learned from more than two decades of wildcrafting and working with plant medicine. He runs his own school as well as a folk medicine business. In helping people understand traditional uses of medicinal plants, he acknowledges some level of uncertainty and risk involved. Self-treatment is strongly not recommended; consulting a qualified practitioner is advised.

In the book, Kloos first describes basic botanical concepts, tools for harvesting, formulas for making medicine, ethical and sustainable wildcrafting practices, herbal safety, and a breakdown of the harvesting season. Photographs taken by Kloos accompany the plants he profiles. He provides detailed descriptions of each plant: their growth habits, parts of the plant, identifying characteristics, where one is likely to find the plant, the best time of year to harvest, and how to harvest the plant. Medicinal uses of the plant and methods of preparing each part of the plant as medicine are described. Cautionary notes throughout the book alert readers regarding such matters as toxicity, dosage precautions, and uses with other medications or during pregnancy. It is imperative to consider potentially harmful effects of an herb.

For thousands of years, plants have been the chief source of medicine around the world. Healers have prescribed many cures from the flora around them. Nevertheless, there is a lot we don’t know. It is important to let your doctor and other health practitioners know which herbal remedies you are considering taking. Meanwhile, reading this book can help you cultivate a more healthy respect for the wild, bonding with the living world in all it offers us.

Excerpted from the August 2019 Leaflet Volume 6, Issue 8.

on the Mucuna species

I saw an interesting flowering vine growing in Japan, and I am wondering what it is and if I can grow it here in Seattle. It has very dark purple (almost black) claw-like flowers and fuzzy stems. Is it purely ornamental, or does it have other uses?

 

The plant you saw is a species of Mucuna, probably Mucuna pruriens or Mucuna nigricans. M. pruriens has various common names: velvet bean, and cowhage or cowitch (from the Hindi name, kiwach, which means “bad rubbing,” and refers to the extreme itching—pruritus–that contact with the stinging hairs on the pods causes). You might be able to obtain seeds and grow it here as an annual, but it prefers tropical regions and is native to southern China and eastern India.

The plant has uses in Ayurvedic medicine and is also considered an analog of the hallucinogenic ayahuasca. According to the scientific article “The Magic Velvet Bean of Mucuna pruriens“ (Lampariello et al. Journal of Traditional Complementary Medicine, 2012 Oct-Dec), the pods are used as a vegetable for human consumption, and its young leaves are used as animal fodder in parts of Asia, Africa, the Pacific Islands, and America.

Strangely, the beans are sometimes used with malice, to cause discomfort, as this information from the Centers for Disease Control explains:
“On October 6, 1985, a Paterson, New Jersey, Fire Department ambulance responded to a call reporting two people with severe pruritus. On arrival, the two emergency medical technicians (EMTs) found a Spanish-speaking couple living above a beauty salon who described severe itching, which they attributed to ‘voodoo beans’ found in their beds. They displayed several fuzzy bean pods. Soon after their arrival, the EMTs developed pruritus. All four individuals went to an emergency room complaining of itching and skin discomfort. On examination, both members of the couple had erythematous macular rashes on their extremities and bodies; the EMTs had rashes on their arms. There were no respiratory problems. Because of the unknown etiology of the symptoms, two were given epinephrine injections; the others received antihistamines and topical steroid cream. Symptoms resolved within 1-2 hours of treatment. The admitting nurse, who put an arm around one patient, developed a pruritic erythematous area on her inner forearm approximately 20 minutes later. This resolved an hour after washing her skin with soap and water. A policeman who went to the apartment and a worker who collected trash outside the following day also developed itching and received similar emergency-room treatment. Patrons and employees of the shop below and neighbors of the couple had no similar symptoms over the 2-day period.”

If you do decide to grow this interesting plant, only handle it while wearing substantial gloves.

The seeds of some species of Mucuna (those called “sea beans”) are used in making jewelry. Here is an excerpt from Wayne’s Word (a natural history website):
“[the flowers] are pollinated by night-flying bats that sip the sweet nectar and transfer pollen from one plant to another. After pollination, the ovary of each flower develops into a legume pod containing several large seeds resembling miniature hamburgers. They have a hard, thick, woody seed coat which makes them impervious to water. Internal air cavities also make them buoyant in water. The conspicuous, dark, central attachment scar (hilum) produces the layered appearance, and their superficial resemblance to a miniature hamburger. Sea beans are washed down gullies and creeks where they are carried into rivers that eventually flow into the Atlantic or Pacific oceans. The buoyant seeds drift for months (or years) at sea, eventually washing ashore on the sandy beaches of a distant continent or tropical island. They are often collected and polished by natives and made into lovely necklaces and bracelets.”

Chinese Medicinal Plants, Herbal Drugs and Substitutes

[Chinese Medicinal Plants, Herbal Drugs and Substitutes] cover

“Herbal drug ingredients (materia medica) are pivotal to the practice of herbal Traditional Chinese Medicine (TCM), an integral component of China’s national healthcare system.” After this introduction, the authors of Chinese Medicinal Plants, Herbal Drugs and Substitutes: An Identification Guide discuss the rising global demand for these medicinal plants and their drugs and the need for their proper identification and descriptions in English.

I first read this book with some skepticism. Is it just a well-produced guide to medicines based on folklore? Several facts changed my opinion.

All identified drugs are in the Pharmacopoeia of the People’s Republic of China as compiled by that country’s Ministry of Health. The authors are at two prestigious organizations that worked together for fifteen years on this project. Christine Leon is at the Royal Botanic Gardens, Kew and Lin Yu-Lin is at the Chinese Academy of Medical Sciences. This collaboration and the depth of scholarship convinced me of the academic merit of this work.

This is not a small field guide. Large in physical dimensions and over 800 pages, it is a major reference work describing both the living plants and the harvested and prepared parts used in medicine. The cross-referencing, especially between Chinese and Western traditions, is extensive. I recommend it to anyone working with or interested in traditional Chinese medicine.

Published in the June 2018 edition of Leaflet for Scholars, Volume 5, Issue 6.

Plants for a Future Species Database

The Plants for a Future Species Database contains details of over 7000 plants, all of which are either edible, have medicinal properties or have some other use such as fibers, oils or soaps. For each plant the database contains details of the uses of the plants, as well as information of the environment it will grow in and cultivation details.

Plants for a Future

Resource center for rare and unusual plants, particularly those with edible and medicinal uses.