. The natural history of plants. Botany. 442 NATURAL HISTORY OF PLANTS. usually male, through the more or less complete abortion of the gynsBceum. Some half-hundred species' have been admitted in this genus, but the number should probably be reduced by half. They occur in all the tropical regions of the globe. O-i/rocarpus americanvs. VI. GYEOCAEPUS SEEIES. Gyrocarpus" has regular polygamous flowers. In the hermaphro- dite (the rarest of all) we find a deep cup- shaped receptacle, lodging the ovary in its con- cavity, while its edges bear the androceum and perianth. The latter consists of
. The natural history of plants. Botany. 442 NATURAL HISTORY OF PLANTS. usually male, through the more or less complete abortion of the gynsBceum. Some half-hundred species' have been admitted in this genus, but the number should probably be reduced by half. They occur in all the tropical regions of the globe. O-i/rocarpus americanvs. VI. GYEOCAEPUS SEEIES. Gyrocarpus" has regular polygamous flowers. In the hermaphro- dite (the rarest of all) we find a deep cup- shaped receptacle, lodging the ovary in its con- cavity, while its edges bear the androceum and perianth. The latter consists of at most ten leaves, five externa? valvate, and five alternating with these, and similar in form, size, and con- sistency. But in certain flowers there are alto- gether but three or four of these leaves. The stamens are sometimes as numerous as the outer leaves, but are usually fewer in number (sterile in the female flowers), each with one or two elongated glands at the base, of variable form, and consisting of a slender exserted filament, and a swollen connective which bears on its edges or inner face two cells; each cell dehisces by the raising of a valve. The g3'n8eceum, rudimentary in the male flower,'' consists of a one-celled ovary containing a single descending anafcropous ovule; this is attached near the top of the ovary, and its micropyle looks upwards and inwards. The terminal style is slender, with a more or less dilated stigmatiferous apex. The fruit (fig. 269) is a drupe with a thin meso- carp; it is surrounded by the receptacle, and the perianth, most of. ' L., Sfec, 35.âSCH. & Thonn., Tieskr., 199. 1^. Bb., :Brodir. , 404.âNees, in Fl. Freiss., ii. 619.âHook., Ilxot. M., t. 167. Wight, Icon., t. 1847.âBenth. & P. Mtjeli,., Fl. Austr., V. 308.âSchltl., in Linnaa, xx. , Arm., i. 574. = G-nrocarpuS Jacq., Amer., 282, t. 178, jiâ 80. âGiEBTir., Fruct., ii. 92, t. 97. âK. Bkown, Frodr., 404.âBl., Nov. Fam. Expos., 15. â Nbes, Prog.
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