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 Volume 3

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 Volume 3

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...flowers yellow. Heads 6-12-flowered: involucre very narrow, 4"-6" high. 1. L. Scariola. Heads 12-20-flowered; involucre broader. Involucre 8"-q" high; achene about as long as its beak. 2. L. Ludoviciana. Involucre 4"-6" high; achene longer than its beak. 5. L. sagittifolia. 2. Leaves neither spiny-margined nor with spiny midribs. (a) Achenes very thin, flat, contracted into filiform or taperinar beaks. Outer involucral bracts abruptly shorter than the inner; heads 4"-7" high; flowers yellow. Leaves, or some of them, pinnatifid. Plant glabrous throughout. 3-io high. Leaves, at least their midribs, hirsute; plant i-6 high. Leaves entire or dentate, none of them pinnatifid. Leaves oblong or oblong-lanceolate; achene longer than the beak. Leaves lanceolate; achene about equalling the beak. Outer bracts gradually shorter; heads 8"-io" high; flowers blue. Canadensis, hirsuta. (b) Achenes beakless or with short necks, thickish; flowers blue. Leaves oblong lo ovate, acuminate, dentate. Leaves pinnatifid, the terminal segment commonly triangular. jfr Pappus brown; flowers blue i. Lactuca Scariola L. PricklyLettuce. (Fig. 3537-) Lactuca Scariola L. Sp. PI. Ed. 2, 1119. 1763. Biennial, green and glaucous; stem stiff, leafy, usually paniculately branched, glabrous throughout, or hirsute at the base, 2-7 high. Leaves oblong or oblong-lanceolate, spinulose-margined, denticulate or pinnatifid, sessile or auriculate-clasping, the lowest sometimes io' long and 3' wide, the upper much smaller; midrib spinulose or hispid; heads 2"-" broad, 6-12-flowered; very numerous in an open panicle; involucre cylindric, "-l/z" thick, its outer bracts about one-third the length of the inner; rays yellow;...show more

Product details

  • Paperback | 336 pages
  • 189 x 246 x 18mm | 599g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236485610
  • 9781236485618