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Of the mustard family (Cruciferae): left, hedge mustard (Sisymbrium officinale); right, whitlow-grass (Draba verna).

Hedge Mustard and Whitlow-Grass

Of the mustard family (Cruciferae): left, hedge mustard (Sisymbrium officinale); right, whitlow-grass…

"Silicles. 1. Of Shepherd's-purse (Bursa Bursa-pastoris). 2. Same, opened, to show the placentae, the seeds, and the two valves. 3. Of Vernal Whitlow-grass, Draba verna. 4. Same, opened, to show the valves, the dissepiment, and the seeds." -Whitney, 1911

Silicles

"Silicles. 1. Of Shepherd's-purse (Bursa Bursa-pastoris). 2. Same, opened, to show the placentae, the…