. The essentials of botany. Botany. 186 BOTANT. 343. They are all of rather small size, varying from a millimetre or so to 20 or 30 cm. in length. For the greater. Fig. 108.—a, a flat-growing ((oliaeeous) Lichen (Sticta puimonaria); B, a stemmed (Iruticose) Liclien (Usnea barbata); a, a, fruit-disks (apotbe- cia). Natural size. part the plant-body is flattish, and adherent to the sur- face upon which it grows {A, Fig. 108), but some species have more or less elongated branching stems {B). 344. The plant-body of a lichen is composed of jointed, branching, colorless filaments similar to those in
. The essentials of botany. Botany. 186 BOTANT. 343. They are all of rather small size, varying from a millimetre or so to 20 or 30 cm. in length. For the greater. Fig. 108.—a, a flat-growing ((oliaeeous) Lichen (Sticta puimonaria); B, a stemmed (Iruticose) Liclien (Usnea barbata); a, a, fruit-disks (apotbe- cia). Natural size. part the plant-body is flattish, and adherent to the sur- face upon which it grows {A, Fig. 108), but some species have more or less elongated branching stems {B). 344. The plant-body of a lichen is composed of jointed, branching, colorless filaments similar to those in the other families of this order, but more or less compacted together into a thallus or branching stem. They obtain their nourishment from little green protophytes or phycophytes to which the filaments attach themselves parasitically. These little hosts, which live in the midst of the moist tissues of the lichens, were until recently supposed to be parts of the lichen itself, and were called gonidia,. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : Holt
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
