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Herba Cana - Northeastern Illinois University

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© 2004 by CRC Press<br />

The Ethnobotany 531<br />

waki used the root to treat rheumatism, as an emetic,<br />

and as a physic (King 1984). The Osage used the<br />

powdered root as a cathartic, gave it as an antidote for<br />

poison, and used it to ward off fever (Hunter [1823]<br />

1973). The Penobscot used May-apple to cure warts<br />

(Vogel 1970).<br />

Tiny quantities of roots, leaves, or green fruits are<br />

poisonous, and powdered root and resin can cause<br />

skin and eye problems. Podophyllum peltatum contains<br />

more than 15 biologically active compounds, including<br />

podophyllin, and a bitter resin containing lignins and<br />

flavonols (Diggs et al. 1999). Podophyllin, concentrated<br />

in the root, is the drug of choice for treating<br />

genital warts although it is highly allergenic (Foster<br />

and Duke 1990). Etoposide, a semisynthetic derivative<br />

from the roots, is the first-choice drug for treating<br />

small-cell lung carcinoma and testicular cancer (Foster<br />

and Duke 1990, Coffey 1993, Hocking 1997, Mabberley<br />

1997, Swerdlow 2000). Teniposide is used to treat<br />

brain tumors and childhood leukemia (Swerdlow<br />

2000). Podophyllum hexandrum has larger rhizomes<br />

than the American species and contains more resins<br />

(12%) with about twice the content of podophyllotoxin<br />

than P. peltatum (Hocking 1997). Podophyllum<br />

hexandrum also contains podophyllotoxin, desoxypodophyllotoxin,<br />

isopicropodophyllone, astragalin, hyperin,<br />

quercetin, and kaempferol (Hsu 1986).<br />

The major disperser of P. peltatum in Delaware<br />

forests is the box turtle (Mabberley 1997). Apparently,<br />

that is why the herbs can get away with ‘‘hiding’’ their<br />

fruits below the canopy of leaves where birds and<br />

many other animals have difficulty finding them.<br />

Polygala: Milkworts<br />

(From Greek poly, much, gala, milk)<br />

Milkworts are everywhere in the pine flatwoods in<br />

late April. Sometimes thousands of plants belonging<br />

to nine species will be in view on ridges and swales. As<br />

I look at the plants, I can almost see the Greek<br />

physician and author Pedanios Dioscorides from the<br />

Polygala.a.Polygala cruciata.b.Polygala lutea.c.Polygala grandiflora.d.Polygala rugelii. e through k. Polygala nana. e. Habit.<br />

f and h. Keel, two views. g. Flower. i. Filaments connected to petals. j. Mature seed. k. Pistil. a through d drawn by<br />

P.N. Honychurch. e through k drawn by Vivian Frazier. From Correll and Correll 1972.

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