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Asteraceae Family of Plants & Herbal Medicine

Plants are grouped into botanical families, and plants in the same family often have very similar properties. With 20,000 members, the Asteraceae family  (“aster” means “star”) is one of the largest and most diverse of all plant families. From fossil records, it appears that this family developed quite recently (only millions of years ago) and this may explain its size. The Asteraceae family contains some of the most helpful, and well known, of all herbs: arnica, burdock, boneset, calendula, chamomile, chicory, mug/cronewort, coltsfoot, dandelion, echinacea, elecampane, feverfew, gravel root, grindelia, liferoot, milk thistle, tansy, yarrow, valerian, wormwood, and wild lettuce.

It offers us delicious foods: sunflower seeds, lettuces, true artichokes, sun chokes (also known as jerusalem artichokes), escarole, and endive. And, it is one of the landscaper’s favorite families, for many Asteraceae–such as chrysanthemums, dahlias, bachelor’s buttons, daisies, cosmos, coneflowers, goldenrods, sunflowers, zinnias, and, of course, asters–bloom for months with colorful hardy flowers, and many are perennial, too.

Plants become members of a family when their flower structures are the same. But dandelion and burdock and sunflowers don’t seem to look alike. How can they all be in the same family? The flowers of the Asteraceae are much smaller than you think, that’s how. The flower you see is not the flower that a botanist sees. Where you see one dandelion bloom, the botanist sees hundreds of small flowers arranged to look like one flower.

The older name for this family tells the tale more clearly: Compositae. Each bloom is composed of hundreds of tiny flowers. With a hand lens, you can look closely at an Asteraceae blossom and see the many tiny flowers crowded together that make up the larger “flower.”

Look at a sunflower; even a picture will do. You can clearly see the many little yellow flowers that make up the disk, or center, of the sunflower. Eventually, each one of those disk flowers, which are fertile, will become a seed. Now look at what you thought were the sunflower petals. Each yellow petal is actually an entire flower, called a ray flower. The ray flowers of the sunflower are sterile, thus produce no seeds.

To see a fertile ray flower, look at a dandelion in bloom. Each of those yellow strands that makes up the dandelion “mop” is an individual ray flower; and each one makes a seed. (There are no disk flowers on the dandelion.)

Some Asteraceae have disk flowers, but no ray flowers, like goldenrod or sagebrush or some forms of chamomile. So there are really three flower patterns in the Asteraceae family: ray and disk flowers together (echinacea, daisy, black-eyed susans); only ray flowers (dandelion, lettuce, artichoke); and only disk flowers (wormwood, ragweed).

In general, Asteraceae are considered edible and safely medicinal, but they often contain very active ingredients along with their exceptional supplies of nutrients. Many Asteraceae contain active alkaloids that are medicinal; but that means they can be harmful, too. (It’s the alkaloids in dandelion, chicory, escarole, endive, and old lettuce that make them taste so bitter.)

Two helpful medicinal Asteraceae–boneset (Eupatorium perfoliatum) and queen of the meadow (E. purpurea)–have a dreadful sister (E. rugosum) known as “white snake root.” This sister contains an alkaloid that, eaten by cows and excreted in their milk, builds up in people who drink the milk and causes their eventual death. Abraham Lincoln’s mother died as a result of it, in fact. Even common garden lettuce contains alkaloids that are comparable to opium alkaloids; and the sap of wild lettuces has long been used, as opiates are to this day, to ease severe pain.

Since roots and seeds are usually richer in alkaloids than leaves and flowers, it is safest to experiment first with the flowers of unfamiliar Asteraceae. I read that native women valued Senecio aureus so much they called it “liferoot.” Great; it grows here. I’ll dig some root. Then I learned that some Senecios species are considered livestock poisoners. Hmmm, maybe I shouldn’t.

Finally, my archeologist neighbor told me that Senecio flower pollen was found around the oldest known human grave. Ah ha! Of course! Tincture the flower. Voila! I’ve seen a dose of 5-8 drops of liferoot flower tincture, taken daily from ovulation to menstruation for at least three cycles, restore menstrual happiness to the most pained of women.

Asteraceae pollens in both fresh and dried flowers can cause breathing problems and allergic reactions in susceptible, or sensitized, individuals. Ragweed (Ambrosia artemisifolia) is in this family, remember. There have been several close calls with children reacting badly to chamomile, and two deaths from echinacea. (It is thought that they sensitized themselves by daily use of echinacea capsules, and went into shock when they took a larger dose. There have been no problems with large doses of echinacea root tincture; but I would not take it daily.)

What Asteraceae grow wild around you? Which ones do you or your friends cultivate? Whether you use their roots, their leaves, or their flowers for medicine, magic, food, or beauty, the star-studded Asteraceae family is twinkling at you.

Medicinal Asteraceae Stars

  • Arnica (Arnica montana) flowers relieve muscle pain.
  • Burdock (Arctium lappa) root nourishes deep health.
  • Boneset (Eupatorium perfoliatum) herb banishes flu.
  • Calendula (Calendula officinalis) flowers salve wounds.
  • Chamomile (Anthemis nobilis or Matricaria chamomilla) soothes baby.
  • Chicory (Cichorium intybus) root strengthens the liver.
  • Coltsfoot (Tussilago farfara) flowers ease coughs.
  • Dandelion (Taraxacum officinalis) herb improves liver function.
  • Echinacea (Echinacea augustifolia) root counters bacterial infections.
  • Elecampane (Inula helenium) root is a favorite lung healer.
  • Feverfew (Chrysanthemum parthenium) prevents migraines.
  • Grindelia (Grindelia robusta) herb in flower opens breathing, stops itching.
  • Liferoot (Senecio aureus) flower tincture counters severe menstrual pain.
  • Milk thistle (Silybum marianum) seed tincture prevents liver distress.
  • Mug/cronewort (Artemisia vulgaris) herb is an old woman’s friend.
  • Queen of the meadow/gravel root (Eupatorium purpurea) helps the kidneys.
  • Tansy (Tanacetum vulgare) flowers repel insects.
  • Yarrow (Achillea millefolium) flowers heal wounds, prevent colds.
  • Valerian (Valeriana officinalis) root brings sleep.
  • Wormwood (Artemisia absinthemum) herb prevents parasites.
  • Wild lettuce (Lactucca species) sap eases severe pain.

1 Comment

  1. Monica Giacomin

    Thank you for the excellent lesson on this plant family! We know that Ambrosia is often the cause of fall hayfever, yet so MANY people (including avid outdoors types) commonly blame goldenrod (solidago) as the histamine producing culprit. Is goldenrod to blame? If they have allergies to goldenrod would they also react to other, or the entire family of, asteraceaes?
    WIth gratitude for all the knowledge you share and the passion you inspire,
    Monica

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