Table 22. Asclepias tuberosa.
Fig. 1. A branch of Asclepias tuberosa, of the natural size.
2. A flower.
3. The Nectary.
4. The calix and germ.
This image is from W. Barton's Vegetable Materia Medica, 1817 (Vol. I), 1818 (Vol. II), Asclepias.
Practical Herb Cards 2
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