. 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. 4. Petasites Petasites (L.) Karst. Butter-bur. Butterfly-dock. Fig. 4598. Tussilago Petasites L. Sp. PI. 866. officinalis Moench. Meth. 568. vulgaris Desf. Fl. Atlant. 2: 270. Petasites Karst. Deutsch. Fl. 1062. 1880-83. Scape very scaly, 6-i5high. Leaves orbicu-lar or hastate-reniform, often 12 broad whenmature, rounded or pointed at 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. 4. Petasites Petasites (L.) Karst. Butter-bur. Butterfly-dock. Fig. 4598. Tussilago Petasites L. Sp. PI. 866. officinalis Moench. Meth. 568. vulgaris Desf. Fl. Atlant. 2: 270. Petasites Karst. Deutsch. Fl. 1062. 1880-83. Scape very scaly, 6-i5high. Leaves orbicu-lar or hastate-reniform, often 12 broad whenmature, rounded or pointed at the apex, repand-denticulate all around, persistently white-to-mentose beneath, green and mostly glabrousabove; heads 4-6 broad, mostly dioecious,in a dense raceme, the staminate ones smallerthan the pistillate; flowers pink-purple, fra-grant, none of them radiate. In cultivated and waste ground, eastern Penn-sylvania and Massachusetts. Naturalized fromEurope. Native also of northern Asia. Batter-or flea-dock. Bog- or poison-rhubarb. L^mbrella-leaves. Pestilence-wort. Ox-wort. April. Genus 97. THISTLE FAMILY. 533 97. ARNICA L. Sp. PI. 884. , simple or little branched herbs, with opposite leave
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
