. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 14 15. FIGURE 12. Part of a setal shaft from antenna of Blatta orientalis showing the two spore holdfasts (arrows) of H. stylopygac after dislodgment of the spore during preparation of slide. Cotton-blue stain. Bar 10 ^. FIGURE 13. Spore of H. cctobiac in 4-cell stage on antennal seta of Blattclla germanica. Note that there is a pair of basal holdfasts ; presumably one spore of a pair became dislodged. Cotton-blue stain. Bar 10 M. FIGURE 14. Spore of H. stylofygae in 4-cell stage on an antennal seta of Blatta orientalis. Sho
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 14 15. FIGURE 12. Part of a setal shaft from antenna of Blatta orientalis showing the two spore holdfasts (arrows) of H. stylopygac after dislodgment of the spore during preparation of slide. Cotton-blue stain. Bar 10 ^. FIGURE 13. Spore of H. cctobiac in 4-cell stage on antennal seta of Blattclla germanica. Note that there is a pair of basal holdfasts ; presumably one spore of a pair became dislodged. Cotton-blue stain. Bar 10 M. FIGURE 14. Spore of H. stylofygae in 4-cell stage on an antennal seta of Blatta orientalis. Shows basal and apical holdfasts (arrows) but the sheath is almost invisible. Bar 10 n. FIGURE 15. Germinating spore of H. stylofygae on surface of antenna of Blatta orientalis. Note characteristic method of growing over the basal holdfast. Cotton-blue stain. Bar 10 M. FIGURES 16 AND 17. Electron micrograph of ends of two spores of H. stylopygac. The line in the underlying formvar membrane shows the original position and shape of the end of the spores. Under electron bombardment the spores have shrunk back and developed blunt ends (opaque). Bar 1 M. as a group. We suspect that ejection from the perithecia of H. stylo pygae is of single spores and that groups of pairs or more represent two or more ejections which adhere because of the sticky external coat (said to be "gelatinous"). Examination of amputated antennae or other areas of the body wall, or of shed skins (exuvia), stained and cleared with cotton-blue in lacto-phenol and ex- amined as whole mounts show large numbers of single and paired spores both on setae (Figs. 13-14) and on the body wall proper (Figs. 3 and 15). Larger groups are uncommon but occasionally seen. These data suggest that the numerous single plants arise from the development of single spores, and that at least some of the large plant clusters commonly seen arise from the development of multiple spore Please note that these images are e
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
