. Studies on the vegetation of the Transcaspian lowlands. Botany. 183. Fig. 30. Ephedra alata. A, Transverse section of bark of a young branch. B, T. S. of a year-old branch. X 230. The anatomical structure of the green bark is briefly described by Volkens (p. 151), and Ross (p. 17) describes an undetermined Ephedra species. Fig. 30 shows the assimilating cortex of a young and of a somewhat older branch. The outer wall is very thick with a strong cuticularised layer. The palisade cells become more rounded towards the interior and at the same time contain less chorophyll. Below the epidermis an
. Studies on the vegetation of the Transcaspian lowlands. Botany. 183. Fig. 30. Ephedra alata. A, Transverse section of bark of a young branch. B, T. S. of a year-old branch. X 230. The anatomical structure of the green bark is briefly described by Volkens (p. 151), and Ross (p. 17) describes an undetermined Ephedra species. Fig. 30 shows the assimilating cortex of a young and of a somewhat older branch. The outer wall is very thick with a strong cuticularised layer. The palisade cells become more rounded towards the interior and at the same time contain less chorophyll. Below the epidermis and in the deeper layers there are numerous sclerenchyma-cells which traverse the stem longitudinally; in the older branch their lumen has almost disappeared. Ammodendron Conollyi Bge. (The Sand-Acacia). This species is found in the sand-desert and prefers deep sand. It attains a height of 2—4 (—8) metres and is a shrub (on the more stationary soils) or more frequently a slender and in most cases a one-stemmed tree. The hairiness of the leaves gives it a whitish grey appearance, the crown. 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 Paulsen, Ove, 1874-1947; Second Danish Pamir expedition. Copenhagen, Gyldendalske Boghandel
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912
