Second book of botany : being an introduction to the study systematic and economic botany, suited for beginners / by John Hutton Balfour.

  • John Hutton Balfour
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Second book of botany : being an introduction to the study systematic and economic botany, suited for beginners / by John Hutton Balfour. Source: Wellcome Collection.

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    NOMENCLATUKE. included in them, except in artificial methods, where some organ is taken as the means of distinction. Genera are derived either from the Latin name of one of the species, from the structure or qualities of the included species, or from the name of some botanist, etc. Thus, Prunus is a genus including the plum, the sloe, etc.; Rosa, the rose; Papaver, the poppy; Hookeria is a genus named after Hooker; Lithospermum, from two Greek words signi- fying a stone and seed, is given to a genus, the species of which have hard stony achenes. In giving the name of a plant, we mention its genus and species. Thus the common Dog-rose is called jRosa canina, the first being the generic name, the second the specific. Specific names may indicate the country in which a plant is found, the locality in which it grows, the form of its roots, stem, or leaves, the colour of its flowers, the name of its discoverer or describer, etc. To the genus and species are added certain letters indicating the botanist who founded them. Thus Valeriana, L. is the genus Valerian, as constituted by Linnseus; and Va- leriana officinalis,!/, is the officinal Valerian as described by Linnseus. QUESTIONS. 1. What idea guides us in the grouping of plants? 2. What is meant by a species ? Give an example. 3. What is meant by a variety? Give an example. 4. What is meant by races of plants ? Give an example. 5. What is meant by a genus? Give an example. 6. What is meant by an order? Give an example. 7. What is meant by a sub-order? Give an example. 8. What is meant by a class. 9. What is meant by a sub-class? 10. What is the origin of the cultivated cabbage, cauliflower and greens. 11. How is cauliflower produced? What is the part of the plant used for food? Whatismeant by the essential character of a species or genus' 13. What is meant by the letter or letters placed after a genus or species? e 14. Give an instance of a generic name. 15. Give an instance of a specific name
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