. Evolution of plants . Fig. 16.—Angiopteris evecta. After Engler and Prantl. complex family has still to be considered, and inthis case also we will approach the fossils througha recent group. Unfortunately the family Marat-tiacese, with which we are here concerned, has nopopularly known members, though some of themwill have been noticed by those who have visitedthe Fern-houses at Kew. They are almost en-tirely tropical Ferns, a few spreading into tern- THE FERNS 149 perate regions in New Zealand and SouthernChina. Many of them are fine, handsome Ferns,the fronds reaching a length of twelve f
. Evolution of plants . Fig. 16.—Angiopteris evecta. After Engler and Prantl. complex family has still to be considered, and inthis case also we will approach the fossils througha recent group. Unfortunately the family Marat-tiacese, with which we are here concerned, has nopopularly known members, though some of themwill have been noticed by those who have visitedthe Fern-houses at Kew. They are almost en-tirely tropical Ferns, a few spreading into tern- THE FERNS 149 perate regions in New Zealand and SouthernChina. Many of them are fine, handsome Ferns,the fronds reaching a length of twelve feet inAngiopteris, the one most common in stems are usually short and massive; thefronds, commonly much divided, are smooth andalmost free from the chaffy scales usual in otherFerns (fig. 16). A characteristic point is thepresence of two fleshy outgrowths (stipules) atthe base of the petiole. The structure of the stem is very complex, thevascular system consisting of a number of cylin-ders of various f
Size: 1226px × 2038px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublish, bookpublisheretcetc
