An elementary text-book of botany / from the German of Dr. K. Prantl ; edited by S. H. Vines.

  • Prantl, Karl Anton Eugen, 1849-1893.
Date:
1886
Catalogue details

Licence: Public Domain Mark

Credit: An elementary text-book of botany / from the German of Dr. K. Prantl ; edited by S. H. Vines. Source: Wellcome Collection.

Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.

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    rith a yellow corolla, as B. acer, the Buttercup, repens, hulhnsus, and sceleratm ( ill known as Crowfoot), and Flammula (Lesser Spearwort) ; they are all more or less poisonous. B. Ficaria (the Lesser Celandine) has 3 sepals and usually B petals. Mijosurus minimus (Mouse-tail) has a very long cylindrical receptacle ; the sepals are spurred, and the petals gradually pass into the stamens. Adonis, the Pheasant's Eye, has completely acyclic flowers; sepals 5, petals 8 or more, not glandular at the base; stamens and carpels indefinite, arranged in -^'j order. A. antumnalis is the species which occurs in England. Tribe 4. Hellehorece. Perianth generally consisting of calyx and corolla, the latter being occasionally suppressed; the petals are glandular at the base; ovaries usually fewer in number than the leaves of the perianth ; ovules numer- ous, borne on the ventral suture; fruit usually consists of several follicles. (a) With actinomorphic flowers : Helleborus, with acyclic flowers ; sepals in | arrangement; the petals, which are small and tubular, in | or i\ ; stamens in jS, or ; ovaries usually 3-5 (Fig. 273 D). H. niger is the Christmas Eose ; H. viridis and foetidus are not rare. Nigella has 5 isetaloid sepals and usually 8 (superposed if 5) small gland- ular petals. Trollius, the Globe-flower, has • 5-15 petaloid sepals, and a similar number of small petals which, like the stamens, are arranged spirally: T. europceiis occurs in sub- alpine regions. Caltha, the Marsh-Marigold, has five yellow petaloid sepals but no corolla : C. palustris is common in damp places. Eran- this, the Winter Aconite, has small petals with long claws. Actsea has a petaloid calyx and an alternating (sometimes suppressed) corolla ; it has a single carpel which becomes a baccate fruit: A. spiaata, the Baneberry or Herb Christopher, occurs in woods. Aquilegia, the Fig. 274.—Diagram of flower of Columbine, has a cyclic flower (Fig. 274) : it Aquilegia. has five petaloid sepals, and petals with long spurs : A. vxdgaris, atrata, Akiei, and others occur wild or are cultivated as decorative plants. (b) With zygomorphic flowers : Delphinium, the Larkspur, has the posterior of the five petaloid sepals pro- longed into a spur: there are typically 5-8 petals, of which only the two (or four) posterior are developed, their spurs projecting into that of the posterior sepal. D. Stapliisagria is poisonous; D. consoUda has but one carpel; D. Ajacis is a common garden plant, with 1-5 carpels. In Aconitum, the Wolf's-bane or Monk's-hood, the posterior of the 5 petaloid sepals is large and hooded; the two posterior of the 8 petals have long claws and are covered by the posterior sepal, the others being inconspicuous (Fig. 273 E c). Sub-order 4. Pcsonieai. The perianth consists of calyx and corolla, and the petals are not glandular : ovaries with numerous ovules, surrounded by a disc. In Pieonia, the Pseony, the calyx consists of 5 sepals which gradually pass into the foliage-leaves ; the 5 or more petals are larger: the stamens are spir- nl'/arranged. P. officinalis, coralUna, and others are cultivated as decorative plants; P. Moutan has a woody stem and a tubular disc. Fruit consists of Bevpra] follicles.