Botanical Gazette Volume 21

Botanical Gazette Volume 21

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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. 1896 edition. Excerpt: ...less than twice their width. Teeth arising from a broad base; leaf-cells large.... 3. P. Columbiana. Teeth arising from a narrow base; leaf-cells small.... 4. P. Virginica. Length of leaves averaging more than twice their width. Leaves obliquely spreading, forming an angle of 4o"-45 with the stem, scarcely narrowed at the base. 5. P. Floridana. Leaves widely spreading, forming an angle of S5-7o with the stem, distinctly narrowed at the base. 6. P. Sullivantii. Leaves reflexed at the postical base, forming two crest-like lines parallel to the stem. Postical margin of leaves plane and dentate beyond the reflexed base 7. P. Ludoviciana. Postical margin of leaves repand-undulate beyond the reflexed base 8. P. undata. 1. Plagiochila Interrupta (Nees) Dum. Rev. Jung. 15. 1835 P. macrostoma Sull. Musci Alleg. n. 221. P. interrupta differs from all our other species in several important respects. As a result of its prostrate habit, its leaves spread horizontally and are almost flat, so that the plant has much the appearance of a Chiloscyphus, while in its inflorescence it is autoicous and not dioicous as in typical Plagiochilae. Lindberg considered these differences sufficient to separate it from the rest of the genus, at first as a subgenus,1 but afterwards as a distinct genus to which he gave the name of Pedinophyllum.2 This genus is maintained by Schiffner, 8 but, as Spruce4 points out, the characters assigned to it are scarcely of generic value, though it might be well to consider them of subgeneric. Lindberg himself had little faith in its validity; four years after its publication, he placed P. interrupta in Mitten's genus Leptoscyphus.5 Plagiochila macrostoma was first definitely referred to P. interrupta by Austin,6 though even...show more

Product details

  • Paperback | 146 pages
  • 189 x 246 x 8mm | 272g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236843134
  • 9781236843135