. 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. 11. Sparganium fluctuans (Morong) Rob- inson. Floating Bur-reed. Fig. 171. Sparganium simplex fluitans Engelm.; A. Gray Man. Ed. 5, 481. 1867. Sparganium androcladum fluctuans Morong, Bull. Torrey Club 15: 78. 1888. Sparganium fluctuans Robinson, Rhodora 7 : 60. 1905. Stem floating, slender, usually elongated; leaves rather narrow, 2"-5i" wide, slight
. 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. 11. Sparganium fluctuans (Morong) Rob- inson. Floating Bur-reed. Fig. 171. Sparganium simplex fluitans Engelm.; A. Gray Man. Ed. 5, 481. 1867. Sparganium androcladum fluctuans Morong, Bull. Torrey Club 15: 78. 1888. Sparganium fluctuans Robinson, Rhodora 7 : 60. 1905. Stem floating, slender, usually elongated; leaves rather narrow, 2"-5i" wide, slightly, if at all, keeled, cellular-reticulate; bracts much shorter than the leaves, dilated and somewhat scarious- margined near the base; inflorescence usually branched, the main axis with 2-4 staminate heads, the branches usually bearing 1 pistillate and 2 staminate heads; fruiting heads about 10" in diameter; nutlets brown, the body fusiform, some- times constricted at the middle; stigma obliquely oblong. In ponds and cold lakes, Maine to Connecticut and Minnesota. July-Sept. 12. Sparganium hyperboreum Laest. Northern Bur-reed. Fig. 172. Sparganium natans submuticum Hartm. Handb. Skand. Fl. ed. 4: 312. 1843. Sparganium hyperboreum Laest.; Beurl. Oefvers. Vet. Akad. Foerh. 9: 192. 1852. Stem floating and elongated, or decumbent, or ascending and 4'S' high; leaves light green, very narrow, i"-2" wide, flat or slightly round-keeled near the base, in the case of floating plants some- times greatly elongated; leaf-sheaths slightly di- lated near the base, but not scarious-margined; pistillate heads 2-4, the lower 1 or 2 usually peduncled and supra-axillary; fruiting heads 4"-S" in diameter; nutlets dark-yellow, dull, the body ellipsoid; stigma oval. In ponds and streams, Greenland to Newfound- land, Hudson Bay and Alaska Also in northern Europe and Asia. Please note that these images are extracted from scanned page images that may have been digit
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
