. The natural history of plants. Botany. 270 NATURAL HISTORY OF PLANTS. orbicular glandular disk, with entire or crenulate margin, sometimes smooth and bare on the upper surface, and sometimes supporting a central and conical rudiment of a gynsecium. Outside of this are inserted caducous petals, equal Kys^abijiora. ^^ Dumber and alternating with the teeth of the calyx, and an equal, double, triple or quadruple number of sta- mens, arranged in verticils and formed each of a free slender exserted filament, and a short, bilocular, introrse anther dehiscing by two longi- tudinal clefts. In the her
. The natural history of plants. Botany. 270 NATURAL HISTORY OF PLANTS. orbicular glandular disk, with entire or crenulate margin, sometimes smooth and bare on the upper surface, and sometimes supporting a central and conical rudiment of a gynsecium. Outside of this are inserted caducous petals, equal Kys^abijiora. ^^ Dumber and alternating with the teeth of the calyx, and an equal, double, triple or quadruple number of sta- mens, arranged in verticils and formed each of a free slender exserted filament, and a short, bilocular, introrse anther dehiscing by two longi- tudinal clefts. In the herma- phrodite flowers, the perianth and androecium are the satae; but the receptacle is deeply depressed to an obconical or tubular cavity which encloses an inferior and unilocular ovary,^ surmounted by a simple or rarely bifurcate, curved or revo- lute style, the internal margin of which is traversed by a longitudinal furrow with edges covered with stigmatic papillae. In the female flowers the stamens disappear, or are carried, in small number and sterile, above the ovary, by the margin of the receptacle. In the internal angle of the ovarian cell near the summit is inserted a descending anatropous ovule, with micropyle exterior and superior.'^ The fruit is an oblong drupe, crowned by a scar, with thick and hard putamen, compressed or cylindrical, enclosing a seed the membranous coats of which cover a fleshy albumen, which envelopes an embryo with foliaeeous cotyledons, nearly equal in size to the albumen and surmounted by a short cylindrical radicle. Tupelos consists of trees or shrubs, not unfrequently covered with a silky down, growing, to the number of half a dozen species,^ in the southern part of North America, in the temperate mountainous regions of Asia, and in the. Fig. 241. Male floriferous tranch. ' Now and then flowers occur -with, two car- ' Michx. Arhr. For. t. 18-22.—A. Gray, pels and an OTary with two cells complete or Man. ed. 6, 201.—Chapm. Fl. S. Vhii. St.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
