. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. ofthe same. Figs. 10, 11, 12, 13 and 14. Spores of Orlhntrichum leiocarpum showing different stages of ger-mination, X 500. Fig. 15. Protonema of the same. Figs. 16, 17, 18, 19. 20 and 21. Spores of B;jHm sphai^-nicola which have germinated in the capsule placed in water, x 400. Fig. 22. Spores of Sphagnum atuti-folium, X 500. Fig. 23. Germination of the same. Fig. 24. Cell-walls of the spores of the same, shed aftergermination. Fig. 25. CJerminating spore of the same
. Mosses with hand-lens and microscope : a non-technical hand-book of the more common mosses of the northeastern United States. ofthe same. Figs. 10, 11, 12, 13 and 14. Spores of Orlhntrichum leiocarpum showing different stages of ger-mination, X 500. Fig. 15. Protonema of the same. Figs. 16, 17, 18, 19. 20 and 21. Spores of B;jHm sphai^-nicola which have germinated in the capsule placed in water, x 400. Fig. 22. Spores of Sphagnum atuti-folium, X 500. Fig. 23. Germination of the same. Fig. 24. Cell-walls of the spores of the same, shed aftergermination. Fig. 25. CJerminating spore of the same, having shed its cell-wall. Fig. 26. A bit of a iiairfrom the peristome of Davisonia, upon which several spores have germinated, x 150. Fig. 27. Protonemalfilaments, g; radicles, r: and lower pari of stem, a, of Schhtoslega osinunjacea, x 400. Fig. 28. End of abranch of the protonema of the same, more highly magnified and showing the refractive cells. Fig. of Phnscum serratum, x 200. Fig. 30. Leaf of FissiJciu adiantoides showing young plants whichhave arisen from spores which have fallen into the leaf. (>4). : I i6 MOSSES WITH HAND-LENS AND .\HCROSCOPE prototiema, the other brownish, without chlorophyll, and divided by very fewsepta. Of course the rhizoid part was below the soil. After the protonemahas reached a certain stage of development, an apical cell is produced, whichforms a bud and young leaves and stem by a series of divisions in severalplanes. There are some mosses that have very few leaves and rely upon a persistentprotonema to do the work of leaves. Such a moss is Pogoiuiliim bievicaule,which is frequent on clayey banks and by roadsides, where the soil has sorecently been disturbed that other plants have not taken possession. Such aplant furnishes the very best opportunity for obtaining protonema, and, if driedspecimens of this moss be soaked out, very satisfactory material can be obtained. A specially interesting point about mosses is that the c
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