Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 2
... appear to be isolated groups of large tracheids lying near to the peri- phery of the pith at one or two places . These may represent the leaf- trace system , or , on the other hand , they may be only displaced strands of secondary xylem ...
... appear to be isolated groups of large tracheids lying near to the peri- phery of the pith at one or two places . These may represent the leaf- trace system , or , on the other hand , they may be only displaced strands of secondary xylem ...
Page 3
... appear to be ordinary early wood . elements . The wide elements in this zone , however , are seen in longitudinal section to have spiral and then reticulate thickening , and finally multiseriate bordered pits ( Pl . I , fig . 2 ) . The ...
... appear to be ordinary early wood . elements . The wide elements in this zone , however , are seen in longitudinal section to have spiral and then reticulate thickening , and finally multiseriate bordered pits ( Pl . I , fig . 2 ) . The ...
Page 9
... appear to be composite * or compound , possessing minor darker bands in the early wood . These , on closer examination , are seen to be produced by a disturbance in the seriation of the tracheids , due to spaces which must represent the ...
... appear to be composite * or compound , possessing minor darker bands in the early wood . These , on closer examination , are seen to be produced by a disturbance in the seriation of the tracheids , due to spaces which must represent the ...
Page 10
... appears to be complicated by a large amount of secondary growth , and resembles " the torn and imperfectly preserved trace 土 in the Antarctic specimen ‡ very closely in the occasional separation of the accompanying secondary xylem into ...
... appears to be complicated by a large amount of secondary growth , and resembles " the torn and imperfectly preserved trace 土 in the Antarctic specimen ‡ very closely in the occasional separation of the accompanying secondary xylem into ...
Page 12
... appear to be truncated in shape in comparison with the groups of protoxylems elsewhere . The secondary wood consists of tracheids , uniseriate medullary rays , and the parenchyma to which reference has already been made . The tracheids ...
... appear to be truncated in shape in comparison with the groups of protoxylems elsewhere . The secondary wood consists of tracheids , uniseriate medullary rays , and the parenchyma to which reference has already been made . The tracheids ...
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Common terms and phrases
Anchiopella axial axis Baini Beil belong Bolivia bone Brit Calmonia Cape Univ capensis Ceres characters Chonetes Cladophlebis Clarke Conularia convex Cryphaeus Dalmanites described devon Devonian figs figured Flora Foss fossil frond frontal genal angles genus Geol Ginkgoites glabella granules head-shield Herscheli Homalonotus Ibid internal cast Knod Kozlowski lateral furrows length margin median Modiomorpha Molteno Molteno Beds Neues Jahrb Nuculites oblique Orbiculoidea Palaeoneilo Paléont Parana Phacops pinnae pinnules pits Plate pleurae pleural lobes posterior preserved Pseudoctenis Pterophyllum pygidium rachis radial Reed Rensselaeria resemblance Rhaetic Rhexoxylon Rhinesuchus ribs ring rounded S.A. Mus Salter Sandstone Schwarz secondary wood segments Seward shell side skull slightly South African Museum species specimen spines Spirifer surface Surv suture Taeniopteris TEXT-FIG Thinnfeldia thorax tracheids transverse tubercles Ulrich Upper valve veins venation Walkom width Williams and Breger XXII York State Mus Zeiller