. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Pollen grains. 367, Pinus larlco. 368, Basella rubra. 869, Ranunculus repeis. mus grandidorus. 371, Passiflora incarnata. 509. Each grain of pollen is a mem- branous cell or sack containing a fluid. Its coat is double, the outer is more thick and firm, exhibiting one or more breaks where the inner coat, which is very thin and expansible, is uncovered. In the fluid
. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Pollen grains. 367, Pinus larlco. 368, Basella rubra. 869, Ranunculus repeis. mus grandidorus. 371, Passiflora incarnata. 509. Each grain of pollen is a mem- branous cell or sack containing a fluid. Its coat is double, the outer is more thick and firm, exhibiting one or more breaks where the inner coat, which is very thin and expansible, is uncovered. In the fluid are suspended molecules of inconceivable minute- ness, said to possess a tre- mulous motion. When the membrane is exposed to moisture it swells and bursts, discharging its contents. g^a, Section of the Passion-flower (Passiflora cwrulea); 610. PoLLINIA. In R, bracts of the involucre; «, sepals ; p, petals; <»,«, statnl the Orchids and Silkweed nl'imas'*''"'''^'"'"'"''' "''"'*" "' """'''' '^'''^'""«"*' 'ii\ m. 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 Wood, Alphonso, 1810-1881. New York; Cincinnati : American Book Co.
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
