Pamphlets on Forestry, Volume 41991 |
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Page 417
... MATURE TWIGS . In Fig . 4 is illustrated the cross - section of a vigorous mature shoot of Alnus mollis . It will be observed that in the first annual ring are numerous large rays of the foliar type . These rays gradually die out in the ...
... MATURE TWIGS . In Fig . 4 is illustrated the cross - section of a vigorous mature shoot of Alnus mollis . It will be observed that in the first annual ring are numerous large rays of the foliar type . These rays gradually die out in the ...
Page 417
... MATURE ROOTS . Fig . 6 illustrates a cross - section of a vigorous mature root of Cas- tanea dentata . Six more or less feebly developed large rays ( x ) radiate from the clusters of protoxylem . A similar condition is illustrated in ...
... MATURE ROOTS . Fig . 6 illustrates a cross - section of a vigorous mature root of Cas- tanea dentata . Six more or less feebly developed large rays ( x ) radiate from the clusters of protoxylem . A similar condition is illustrated in ...
Page 417
... mature wood , showing the uniseriate х бо . Fig . 2. Casuarina , sp . Transverse section of the mature stem , showing the depression in the outline of the xylem produced by an aggregate ray . X 20 . Fig . 3. Castanopsis tribuloides ...
... mature wood , showing the uniseriate х бо . Fig . 2. Casuarina , sp . Transverse section of the mature stem , showing the depression in the outline of the xylem produced by an aggregate ray . X 20 . Fig . 3. Castanopsis tribuloides ...
Contents
The Huron River valley | 402 |
their development and ecological conditions | 360 |
The bogplant societies | 429 |
4 other sections not shown
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Common terms and phrases
2d whorl 4th whorl abundant acidity Alnus aments apex apical shoot Aronia average basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledonous drainage drained factors Fagales fiber bundles foliar ray forest formation genera glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lobes lower mature Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piñon Pinus rigida pith rays plant societies Platanus plates present Quercus radial region resin canals roots rows Salix sapwood scattered sclerenchyma sclerotic sedge shrubs sieve tubes soil species specimens sphagnum stem stone cells substratum surface swamp tamarack temperature thick tissue tracheids trees trunk twigs tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone