Forest trees of the Pacific slope . Fii;. 175.—/( mirrnit/ij/Ua: a, seed. Tolerance.— intolerant of shade. Reproduction and other silvical characteristics undetermined ; fairly abundant seeder. FOKEST TREES OF THE PACIFIC 375 Cercidium forms a small group of low. shrubby, thorny, green-barkedtrees, somewhat similar in habits and form to the Parkinsonias. with which our. Pig. 176.—Cercidium torreyanum. three southwestern species were once, and by some authorities still are. com-bined. The 2-forked leaf-stems^ with few pairs of very small leaflets, and 376
Forest trees of the Pacific slope . Fii;. 175.—/( mirrnit/ij/Ua: a, seed. Tolerance.— intolerant of shade. Reproduction and other silvical characteristics undetermined ; fairly abundant seeder. FOKEST TREES OF THE PACIFIC 375 Cercidium forms a small group of low. shrubby, thorny, green-barkedtrees, somewhat similar in habits and form to the Parkinsonias. with which our. Pig. 176.—Cercidium torreyanum. three southwestern species were once, and by some authorities still are. com-bined. The 2-forked leaf-stems^ with few pairs of very small leaflets, and 376 FOREST TREES OF THE PACIFIC SLOPE. the yellow, similarly clustered tiowers are closi-ly similar to those of ^Parkin-Honia inicropliyUd. Cercidiiim is best distinguished by the flat, uncon-stricted pods, which are more like bean fruits than the round, jointed podsof Parkiiisonia. This, together with some minor structural differences in theflowers, make it desirable to maintain Cercidiutn as distinct from the latter, trees of this group are desert-loving shrubs and trees. For thisreason they are of some service to the forester, since they form persistent,though thin, chaparral in arid places. The moderately heavy, hard wood isoccasionally used locally for fuel, but not otherwise. One of the three species occurring in the United States (two of which aresmall trees and the other a shru
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforestsandforestry
