. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 24.—Iceland Moss {Cetraria island- ica). Single plant. 57. Thallogens.—The plants thus far examined, from Proto- phytes to Lichens inclusive, consist either of a single cell like the Protococcus, Diatom, and Bryopsis, or of many cells united into a mass called cel- lular tissue, like the higher Seaweeds and the Lichens (Fig. 25). The growth is peripheral Ji;^'^^rp^^' ^^ Y^^! (increasing at the circumference 'iiocia; g, gouidia; p, parapiiyses, or 1 ' n \ ° 1 11 1 1 th
. Botany for academies and colleges: consisting of plant development and structure from seaweed to clematis. Botany; 1889. Fig. 24.—Iceland Moss {Cetraria island- ica). Single plant. 57. Thallogens.—The plants thus far examined, from Proto- phytes to Lichens inclusive, consist either of a single cell like the Protococcus, Diatom, and Bryopsis, or of many cells united into a mass called cel- lular tissue, like the higher Seaweeds and the Lichens (Fig. 25). The growth is peripheral Ji;^'^^rp^^' ^^ Y^^! (increasing at the circumference 'iiocia; g, gouidia; p, parapiiyses, or 1 ' n \ ° 1 11 1 1 threads, surrounding the spore-Cases. chiefly), and usually broaden- ing horizontally (Fig. 26). Observe these characteristics:. 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 Ketchum, Annie Chambers, 1824-1904. Philadelphia, J. B. Lippincott company
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