. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. are, in some cases, straight and prismatic, or they may be dichotomous, or hooked (Fig. 252) at the free ends. a. Pyronomycetes. This order differs from the preced- ing in having the asci em- bedded in deep cavities (called perithecia) with narrow openings, instead of being com- pletely enclosed in perithecia. The pyronoraycetous Fungi are very numerous, and exceedingly injurious not only to plants, but to inse
. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. are, in some cases, straight and prismatic, or they may be dichotomous, or hooked (Fig. 252) at the free ends. a. Pyronomycetes. This order differs from the preced- ing in having the asci em- bedded in deep cavities (called perithecia) with narrow openings, instead of being com- pletely enclosed in perithecia. The pyronoraycetous Fungi are very numerous, and exceedingly injurious not only to plants, but to insects also. A common representative is the Fungus (^Claviceps purpurea ; Fig. 253), which produces the Ergot on Eye and other Grasses. In its earliest stage, it consists of a mass of myce- lium (Fig. 253, m), in and up- on the young ovary. Conidia (Fig. 253, con) are produced in great abundance, which quickly germinate. Follow- ing the conidial stage, the mycelium, at the base of the ovary (Fig. 253, ov), assumes a hard and compact form, increases in size, bears a horn-shaped and dark-colored body, the so-called Ergot. Such a compact mass of hy- phae is called a selerotium. Fig. 252. The sporocarp Yperithecium), with its appendages and two asci, of Uncifiula macrospora. Fig. 263. Clavicefs ^rpurea, the Fungus which pro- duces the Ergot; OT, mycelium; c<7«, conidia; w, 'o o â 253. 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 Kellerman, William Ashbrook, 1850-1908. Philadelphia, J. E. Potter and Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1883
