. 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. 99. ERECHTITES Raf. Fl. Lndov. 65. 1817. Erect, usually branching herbs, with alternate leaves, and (in our species) rather largediscoid many-flowered heads of whitish flowers, corymbose-paniculate at the ends of thestem and branches. Involucre cylindric, swollen at the base, its principal bracts in i series,linear, with or without some much smaller outer ones. Receptacle con
. 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. 99. ERECHTITES Raf. Fl. Lndov. 65. 1817. Erect, usually branching herbs, with alternate leaves, and (in our species) rather largediscoid many-flowered heads of whitish flowers, corymbose-paniculate at the ends of thestem and branches. Involucre cylindric, swollen at the base, its principal bracts in i series,linear, with or without some much smaller outer ones. Receptacle concave, naked. Marginalflowers in 2-several series, pistillate, fertile, their corollas filiform, the limb flowers perfect, fertile; corolla narrowly tubular, the limb 4-5-toothed, the style-branches elongated, truncate or obtuse at the summit. Anthers obtuse and entire at the linear-oblong, angled or striate. Pappus of copious capillary soft smooth whitebristles. [Ancient name of some groundsel.] About 12 species, natives of America and Australasia. The following typical one is the onlyspecies known to occur in North America. Vol. III. I, Erechtites hieracifolia (L.) Fig. 4605. Senecio hieracifalius L. Sp. PI. 866. prealta Raf. Fl. Ludov. 65. hieracifolia Raf. DC. Prodr. 6 :294. 1837. Annual, glabrous, or somewhat hir-sute ; stem striate, succulent, usuallybranched, i°-8° high. Leaves thin, lan-ceolate or ovate-lanceolate, dentate andoften deeply incised, 2-% long, theupper sessile or auriculate-clasping,mostly acuminate, the lower usually nar-rowed into petioles; heads 6-io long,about 3 in diameter, the involucre con-spicuously swollen at the base beforeflowering, its bracts numerous, striate,green, with narrow scarious margins;pappus bright white. In woodlands, thickets and waste places,very abundant after fires, Newfoundland toFlorida, Ontario, Saskatchewan, Nebraskaand Texas. Also in Mexic
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
