The Genus Pinus
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About this book
The Genus Pinus is by George Russell Shaw, and its contents list is divided into Part 1, Characters of the Genus, and Part 2, Classification of the Species. Listed topics include Cotyledon, Primary Leaf, Bud and Branchlet, and Wood and Bark.
The text says a summer-shoot may appear on vigorous branches of any species, converting a uninodal spring-shoot into an imperfect multinodal branchlet. The text says the multinodal shoot is never invariable in a species, but is rare, common or prevalent. The text says the length of the branchlet is much influenced by different soils and climates. The entry on PINUS ARISTATA gives leaves from 2 to 4 cm. long, persistent for many years, and cones from 4 to 9 cm. long. The same entry calls it a bushy tree growing at the timber-limit from Colorado through Utah, central and southern Nevada and northern Arizona into southeastern California.
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Book facts
- Author
- George Russell Shaw
- Pages
- 181
- Language
- English
- Genre
- Biology
- Formats
- PDF, EPUB, Read online