Reports of Explorations and Surveys; To Ascertain the Most Practicable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean Volume 4

Reports of Explorations and Surveys; To Ascertain the Most Practicable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean Volume 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1856 edition. Excerpt: ...DC. I. c, excl. . . Lindleyi, DC. 2. C. MACROCH.ETA, Gray, PI. Fendl. p. 112, excl. syn. 3. C. Parrti (sp. nov.): scaposa, fere glabra; involucri squamis triscriatis ovatis oblongisve subobtusis, exterioribus graduatim brevioribus; pappi paleis oblongis apice bifidis arista e sinu exsercnto barbellato-scabra dimidio brevioribus. Near San Diego, California, Dr. Parry. (Achenia not seen.) 2. EucALtis, DC. Achonia breviora, linearia vel oblonga basi attenuata, erostria, apice truncata, extima villosa. Pappus (sordidus vel rufidulus) paleis 5 inlegris in aristam barbellato-scubrnni productis. Involucrum basi calyculatum; squamae propria? inter se qualcs. Ligulte brcviuscul, exsert . Monocarpic, leptorhiz, scapos . 4. C. Douglasii, DC. I. c. specimens are barely in flower, and therefore too young for ascertaining the form of the achenia. But the pappus and the lanceolate very taper-pointed involucral scales are just as in C. niacrocheeta, and the whole plant resembles the Oregon specimens, except that the leaves are mostly pinnatifid with longer linear lobes; a character of no specific value in this and other Cichoraceous genera, and not uniform in these specimens. These plants, like so many others of the same and similar regions, spring from seed apparently in the autumn, and flower in the vernal season; so that one is in doubt whether to call them annuals or biennials, between which there is no malted distinction in such climates. Calais Douolasii, DC. Prodr. 1, p. 85. Low or wet places, Mark West's creek, California; April. A depauperate state, with slender and only about 10-flowered heads, none of the exterior achenia hirsute. Still the few specimens...show more

Product details

  • Paperback | 160 pages
  • 189 x 246 x 9mm | 299g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236977971
  • 9781236977977