. A manual of the North American gymnosperms [microform] : exclusive of the cycadales but together with certain exotic species. Bois; Trees; Gymnosperms; Gymnospermes; Arbres; Wood. RESIN CFAAJS Percentage Distkibition ok Rksin Cells 119 NiMBRK OH Shecce Pkk IKNTo ' j .SlATTEK- 1 t)N THE OlTBu â > (KH'KKENCl ISG In Zones (â KiUl'EnI Fa<E( MEK WlKlU Gingko . r 1 Dammara . j Araucaria . 1 i ( 'lorreya . ; ,ri Taxus . 4 Thujopsis . I Crj'ptomeria I J'odocarpus. I () 1 huya . 2 »=3 33-
. A manual of the North American gymnosperms [microform] : exclusive of the cycadales but together with certain exotic species. Bois; Trees; Gymnosperms; Gymnospermes; Arbres; Wood. RESIN CFAAJS Percentage Distkibition ok Rksin Cells 119 NiMBRK OH Shecce Pkk IKNTo ' j .SlATTEK- 1 t)N THE OlTBu â > (KH'KKENCl ISG In Zones (â KiUl'EnI Fa<E( MEK WlKlU Gingko . r 1 Dammara . j Araucaria . 1 i ( 'lorreya . ; ,ri Taxus . 4 Thujopsis . I Crj'ptomeria I J'odocarpus. I () 1 huya . 2 »=3 33-30 I (33-30) Sequoia . 2 := 2 Cupressus . I 7 5 = 9 1 I 53-90 Taxodium . () . I () Juniperus . 11 = 11 I Abies . . 4 = 7 S 2 = 5 5 'J'suga . 45-50 33-30 I'seiidotsuga Liirix . . 4 I'iita . . 10 I'inus . . 1 41 structures have been seen to be peculiar to Dammara, Araucaria and m which they occur only in certain species. In answer- ing this question we cannot avail ourselves of evidence derived from fossil plants, since it is, in such cases, of a negative char- actor. Neither Cordaites nor Araucarioxylon affords definite proof of the presence or absence of such structures, since they do not appear in any of the published diagnoses, and our own studies have not resulted in their recognition. If originally present, they 'in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Penhallow, D. P. (David Pearce), 1854-1910. Boston : Ginn & Co.
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