. A text-book of botany for secondary schools. Botany. 82 A TEXT-BOOK OP BOTANY roots serving as tendrils. In the trumpet-creeper and poison-ivy these tendril-like roots cling to various supports, such as stone walls and tree trunks, by sending minute branches into the crevices. In such cases, however, the plant has also true soil roots. (4) Air roots.— Some plants have no soil connection at all. In the rainy tropics, where it is possible to obtain sufficient moisture from the air, there are many such plants, notable among which are the orchids, to be ob- served in almost any greenhouse. Cling
. A text-book of botany for secondary schools. Botany. 82 A TEXT-BOOK OP BOTANY roots serving as tendrils. In the trumpet-creeper and poison-ivy these tendril-like roots cling to various supports, such as stone walls and tree trunks, by sending minute branches into the crevices. In such cases, however, the plant has also true soil roots. (4) Air roots.— Some plants have no soil connection at all. In the rainy tropics, where it is possible to obtain sufficient moisture from the air, there are many such plants, notable among which are the orchids, to be ob- served in almost any greenhouse. Clinging to the trunks of trees, usu- ally imitated in the greenhouse by nests of sticks, they send out long roots which dangle iu the moist air (Fig. 78). Such plants are called epiphytes, the name indi- cating that they perch upon other plants and have no con- nection with the soil (Fig. 79). A very common epiphyte of our Southern Slates is the common long moss or black moss (although it is by no means a moss) that hangs in stringy masses from the branches of live-oaks and other trees (Fig. 80).. Fig. 78.—An orchid with aerial 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 Coulter, John Merle, 1851-1928. New York, D. Appleton
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1906
