An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Gex MUSTARD FAMILY. 153 2. BERTEROA DC. Mem. Mus. Paris, 7: 212. 1821. Annual or perennial herbs, stellate-pubescent or cancscent, the leaves mostly narrow and entire, and the flowers white in terminal racemes. Petals 2-cleft. Filaments 2-toothe(l at the base. Silicles oblong or subglobose. somewhat compressed. Seed
An illustrated flora of the An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Gex MUSTARD FAMILY. 153 2. BERTEROA DC. Mem. Mus. Paris, 7: 212. 1821. Annual or perennial herbs, stellate-pubescent or cancscent, the leaves mostly narrow and entire, and the flowers white in terminal racemes. Petals 2-cleft. Filaments 2-toothe(l at the base. Silicles oblong or subglobose. somewhat compressed. Seeds several in each cell, winged. Cotyledons accumbent. [In honor of C. G. Bertero, a botanist of Piedmont, i;39-i83i] About 5 species, natives of Europe and Asia, the following typical. I. Berteroa incana (L.) DC. Hoary Alyssum. Fig. 2010. Alyssum xncannm L. Sp. PI. 650. 1753. Berteroa incana DC. Syst. 2: 291. 1821. Erect or ascending, I'-a' high, hoary-pubescent, branching above. Leaves lanceolate or oblong, I'-iV long, obtuse, entire or slightly undulate, the lower nar- rowed into a petiole; flowers white, i'-ii' broad; pedicels ascending. 2'-3' long in fruit; pod canescent, swollen, oblong. 3'-4' long and about half as broad; style l'-li' long; stigma minute. In waste places. Maine to Ontario, Minnesota, Massa- chusetts, Xew Jersey and Missouri. Adventive or natural- ized from Europe. Racemes elongating, the flowers and pods very numerous. June-Sept. Berteroa mutabilis (Vent.) DC, also native of Europe, has a more compressed, sparingly pubescent and slightly larger pod; it is recorded as adventive in Massachusetts. 3. KONIGA* Adans. Fam. PI. 2: 420. 1763. [ Desv. Journ. Bot. 3: 172. 1813.] Perennial herbs or shrubs, pubescent or canescent with forked hairs, with entire leaves, and small white flowers in terminal racemes. Petals obovate, entire. Filaments slender, not toothed, but with two small glands at the base. Silicle compressed, oval or orbicular. Seeds i in ea
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