. Elementary botany. Botany. u8 MORPHOLOG Fig. 126. Fig. 127. Gracillaria, portion of frond, Gracillaria, section of cystocarp showing position of cysto- showing spores, carps. 273. The principal groups of the algae are the following: Chlorophycece. Green algae. Protococcoideae (the protococcus (Pleurococ- cus vulgaris); the red-snow plant (Sphaerella nivalis), etc. Conjugateae (spirogyra, zygnema, mougeotia, desmids, etc.). Siphoneae (vaucheria). Confervoideae (oedogonium, chaetophora, cole- ochaete). CyanophycecB (nostoc, oscillatoria, etc.). The blue-green algae. Phceophycem (fucus, etc
. Elementary botany. Botany. u8 MORPHOLOG Fig. 126. Fig. 127. Gracillaria, portion of frond, Gracillaria, section of cystocarp showing position of cysto- showing spores, carps. 273. The principal groups of the algae are the following: Chlorophycece. Green algae. Protococcoideae (the protococcus (Pleurococ- cus vulgaris); the red-snow plant (Sphaerella nivalis), etc. Conjugateae (spirogyra, zygnema, mougeotia, desmids, etc.). Siphoneae (vaucheria). Confervoideae (oedogonium, chaetophora, cole- ochaete). CyanophycecB (nostoc, oscillatoria, etc.). The blue-green algae. Phceophycem (fucus, etc.). The brown 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and company
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