. Agricultural botany, theoretical and practical. Botany, Economic; Botany. 730 FUNGI The teleutospores grow at the apex of vertical brown hyphse, which are arranged in dense clumps or sori (A, Fig. 247). Each teleutospore consists of two cells superimposed, as in Fig. 247. The outer wall of the compound spore is a deep chestnut-brown colour and very thick, especially at the apex. Lining each of the two component cells is a delicate membrane. A germ-pore is present at the apex of the uppermost ceU, and another exists at the side of the lower cell close to the transverse septum. The teleutospor
. Agricultural botany, theoretical and practical. Botany, Economic; Botany. 730 FUNGI The teleutospores grow at the apex of vertical brown hyphse, which are arranged in dense clumps or sori (A, Fig. 247). Each teleutospore consists of two cells superimposed, as in Fig. 247. The outer wall of the compound spore is a deep chestnut-brown colour and very thick, especially at the apex. Lining each of the two component cells is a delicate membrane. A germ-pore is present at the apex of the uppermost ceU, and another exists at the side of the lower cell close to the transverse septum. The teleutospores remain dormant during winter, and cannot be made to germinate until the following spring. Even at the latter period only those germinate which have been exposed to the ordinary changing climatic con- ditions of winter. Teleuto- spores from straw pro- tected in stacks or barns rarely grow. _ , ^ „.....„.,,,„,. AX7U ^« rr^^ single teleutospore (enlarged 450 diameters)"; "c, germinated teleutoiore W nen ger- a. comdlophore; J sterigma ; h basidiospore. mina tion takes place, a hypha, which develops into a basidium, arises from the germ-pore of each cell of the teleutospore (C, Fig. 247); the upper part of the basidium (a) is usually divided into four cells, and each of the latter produces a delicate sterigma (s), on the. 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 Percival, John, 1863-1949. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
