. 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 102d meridian. Botany; Botany. ARACEAE. Vol. I. i. Acorus Calamus L. Sweet Flag. Calamus or Flag-root. Fig. 1119. Acorus Calamus L. Sp. PI. 324. 1753. Leaves linear, erect, 2°-6° tall and 1' wide or less, sharp-pointed and sharp-edged, with a rigid mid- vein running their whole length, 2-ranked, closely- sheathing each other and the scape below. Spathe a leaf-like extension of the scape proj
. 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 102d meridian. Botany; Botany. ARACEAE. Vol. I. i. Acorus Calamus L. Sweet Flag. Calamus or Flag-root. Fig. 1119. Acorus Calamus L. Sp. PI. 324. 1753. Leaves linear, erect, 2°-6° tall and 1' wide or less, sharp-pointed and sharp-edged, with a rigid mid- vein running their whole length, 2-ranked, closely- sheathing each other and the scape below. Spathe a leaf-like extension of the scape projecting 0-30' beyond the spadix; spadix spike-like, 2'sV long, about ¥ in diameter, compactly covered with minute greenish-yellow flowers. In swamps and along streams, Nova Scotia to Ontario and Minnesota, south to Louisiana and Kansas. Also in Europe and Asia. In our territory fruit is rarely, if ever, formed. The hard ovary is usually found to be imperfect, with 2 or 3 abortive cells and ovules. The plant is propagated by its large rootstocks, which furnish the drug Calamus. Interior of stalk sweet. Myrtle- flag, -sedge or -grass. Sweet-myrtle. Sedge-grass, -cane, -root or -rush. Sea-sedge. Beewort. May-July. Family 13. LEMNACEAE Dumort. Fl. Belg. 147. 1827. Duckweed Family. Minute perennial floating aquatic plants, without leaves or with only very rudimentary ones. The plant body consists of a disc-shaped, elongated or irreg- ular thallus, which is loosely cellular, densely chlorophyllous and sometimes bears one or more rootlets. The vegetative growth is by lateral branching, the branches being but slightly connected by slender stalks and soon separating. In the autumn these disconnected branches fall to the bottom of the ditch or pond, but rise and again increase in size in the spring. The inflorescence consists of one or more naked monoecious flowers borne on the edge or upper surface of the plant. Each flower commonly consists of but a single stamen or a single flask-sh
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
