. Studies on the vegetation of the Transcaspian lowlands. Botany. — 231 — shoots have short internodes and many small knotted lateral shoots with the leaves arranged in rosettes. The leaves stand close together and are ovate-lanceolate with a small spinose point. Anabasis salsa (C. A. M.) (Brachglepis). This species occurs on clayey or stony and saline soil. Its habit is shown in fig. 56. It is an undershrub-chamae- phyte, with slightly branched year-shoots which die off almost down to the surface of the ground. They are richly furnished with flowers which arise in the axils of the small oppos
. Studies on the vegetation of the Transcaspian lowlands. Botany. — 231 — shoots have short internodes and many small knotted lateral shoots with the leaves arranged in rosettes. The leaves stand close together and are ovate-lanceolate with a small spinose point. Anabasis salsa (C. A. M.) (Brachglepis). This species occurs on clayey or stony and saline soil. Its habit is shown in fig. 56. It is an undershrub-chamae- phyte, with slightly branched year-shoots which die off almost down to the surface of the ground. They are richly furnished with flowers which arise in the axils of the small opposite scale leaves. The flowers are out in July or August. The fruit is somewhat fleshy, it is surrounded by the non- winged pei'ianth. The assimilating stem is constructed after the oi'dinary centric type of the Chenopodiaceae. The epidermal tissue consists of three layers, of which the inner layer is a thin- walled "crystal-layer". The stomata are slightly sunk. A ring of palisade cells surrounds the starch-sheath and within this is an aqueous tissue with large crystal-cells and the veins. Anabasis aphylla L. This species is a salt- plant like the previous one and relationship is also shown as regards shoot-structure. In its fruit A. aphylla is a true Anabasis, the leaves of the perianth being broadly winged and the fruit Arthrophytum subuli- folium Schrenk. An undershrub growing on Arm soils. It probably does Fig. 57. Arthrophytum subulifolium. A, leaf in transverse section; JVe, vein; Ski., sclerenchyma (black); W, aqueous tissue; St, starch-sheath; Pal, palisade cells; Di; crystal-layer; Ep, epidermis. B, Part of transverse section of a young branch showing epidermis, hy- poderm vsrith crystal-cells, palisade cells and starch-sheath. A,XiT,B,X 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 orig
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1912
