. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. SCROPHULABIACEAE (FIGWOBT FAMILY) 379 pale yellow, the upper one brownish on the back; stamens of unequal lengths, the filaments bearded with purple hairs. Cap- sules globose, longer than the calyx, many-seeded. (Fig. 263.)'" Means of control the same as for Common Mullein. YELLOW TOAD-FLAX Linaria vulgaris, Hill Other English names: Butter-and-Eggs. Wild Snap-dragon, Flax- weed, Impudent Lawyer
. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. SCROPHULABIACEAE (FIGWOBT FAMILY) 379 pale yellow, the upper one brownish on the back; stamens of unequal lengths, the filaments bearded with purple hairs. Cap- sules globose, longer than the calyx, many-seeded. (Fig. 263.)'" Means of control the same as for Common Mullein. YELLOW TOAD-FLAX Linaria vulgaris, Hill Other English names: Butter-and-Eggs. Wild Snap-dragon, Flax- weed, Impudent Lawyer, Ranstead. Introduced. Perennial. Propagates by seeds and by rootstoeks. Time of bloom: June to October. Seedr-time: August to November. Range: Nova Scotia to Manitoba, southward to Georgia and Nebraska. Habitat: Fields, pastures, roadsides, and waste places. A weed very difficult to suppress because of its deep, running rootstoeks. Cattle dislike its taste and odor, and in pastures it is left to reproduce itself unmolested; seed-bearing plants are fre- quently transported in baled hay. Stems several from the same root, erect, smooth, very slender, one to two feet tall, simple or with few branches. Leaves alternate, pale green, linear, entire, pointed at both ends, sessile, crowded on the stalks. Flowers in dense racemes, the earliest clusters terminal, later bloom springing from the axils; corolla yellow, irregular, about an inch long, spurred at the base, two-lipped, the upper one two-lobed and erect, the throat nearly closed and yellow-bearded within, the bulging palate deep orange above spreading lower lips; stamens four, in unequal pairs, included; the flowers have an unpleasant odor. Capsules two celled, ovoid, each containing fifty to sixty flattened, rough, wing- margined seeds. (Fig. 264.) Means of control. Fig. 264.— Yellow Toad-flax (Linaria vulga- ris). Xi. If the area infested is small, use one of the strong herbicides, such as hot brine or caustic soda, which w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
