This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...after arainfall of half an inch, by which the soil would usually be moistened to a depth approximately 8 to 12 cm., that underneath a boulder was pereeptibly wet to a depth of 25 cm., while less than 1 meter distant the soil, free of large rocks, was air-dry at this depth. The root-system of the older plant, which grew ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 Excerpt: ...after arainfall of half an inch, by which the soil would usually be moistened to a depth approximately 8 to 12 cm., that underneath a boulder was pereeptibly wet to a depth of 25 cm., while less than 1 meter distant the soil, free of large rocks, was air-dry at this depth. The root-system of the older plant, which grew on the western side of Tumamoc was different in some particulars from that of the plant just described. The shoot of the plant consisted of two main branches and three secondary ones, with a stout central axis, and the weight of all of the branches was born by the stem. There was no main or tap root, as in other cacti, but several roots, constituting a brush, left the base of the stem and penetrated the ground at an acute angle. Of these roots, the longest attained a depth of 15 cm. in a horizontal direction. From the central group there arose 8 leading roots which formed the superficial portion of the system; these varied in length from 50 cm. to 1.3 m.; the longest were those extending uphill. The superficial roots varied greatly in depth, some being as close to the surface as 2 cm. and others penetrating as deep as 20 cm., but the deeply placed ones uniformly ran underneath boulders, while the more shallow roots were situated where the soil was free from large rocks. The bases of the superficial roots were somewhat enlarged; for example, a root 50 cm. long was 1.5 cm. in diameter at its base, but the roots as a whole were very slender. The enlargement of the bases of the roots probably represents a regulatory response on the part of the roots by which the weight of the shoot is borne and the strains incident to winds successfully withstood. Thus roots functioning primarily as absorbing organs become, in the absence of a well-developed tap ...
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Add this copy of The Root Habits Of Desert Plants to cart. $15.42, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Root Habits Of Desert Plants to cart. $26.58, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Root Habits of Desert Plants to cart. $100.00, good condition, Sold by Moe's Books rated 4.0 out of 5 stars, ships from Berkeley, CA, UNITED STATES, published 1911 by The Carnegie Institution.
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Seller's Description:
Good in None jacket. Original edition. Binding a little uneven from mediocre gluing by publisher. Date stamp on verso page. Faint evidence of name on first few pages.
