. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. SPERMATOPHYTA—CRUCIFERAE 487 Pod short. Pod many or few seeded; obcordate-triangular. Pod many seeded, obcordate-triangular 4 Capsella Pod few seeded, orbicular, obovate or obcordate 7 Thlaspi Pod 2-seeded, flat, notched 6 Lepidium 1. Sisymbrum (Tourn.) L. Annual or biennial herbs with usually simple spreading pubescent, hairs occasionally forked or stellate; leaves entire, oblanceolate, divided, pinnatifid, or runcinate; flowers in
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. SPERMATOPHYTA—CRUCIFERAE 487 Pod short. Pod many or few seeded; obcordate-triangular. Pod many seeded, obcordate-triangular 4 Capsella Pod few seeded, orbicular, obovate or obcordate 7 Thlaspi Pod 2-seeded, flat, notched 6 Lepidium 1. Sisymbrum (Tourn.) L. Annual or biennial herbs with usually simple spreading pubescent, hairs occasionally forked or stellate; leaves entire, oblanceolate, divided, pinnatifid, or runcinate; flowers in racemes; calyx open, greenish, of 4 sepals; corolla white, yellow or yellowish, or rarely pink, small; pistils terete, flattish or 4-6- sided; small entire stigma; seeds small oblong; cotyledons incumbent. A small genus of 60 species. Found in temperate regions of both hemis- pheres. Several species are well known troublesome weeds. Sisymbrium officinale Scop. Common Hedge Mustard A slender erect annual or winter annual, ll4-2y> feet high; lower leaves divided, runcinate, pinnatifid, upper entire or hastate at base; flowers small, yellow, borne in spike-like racemes; seeds small, brown; cotyledons • Fig. 255. Tumbling Mustard (.Sisymbrium altissimtim). Common in Canada and from Minnesota to Washington. (Dewey, U. S. Dept. Agrl.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pammel, L. H. (Louis Hermann), 1862-1931. Cedar Rapids, Ia. , The Torch Press
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