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Secr. XX. 5. NATURAL CLASSES. 573
næus, and which thus approaches towards à natural clafs. Secondly
on the receptacle, which diftinguifhes the clafs polyandria of Lan- næus, which alfo approaches toward a natural clafs. And thirdly, the infertion of the filaments alternately to the claws of the petals, and to the receptacle; which diftinguifhes a part of the natural order of the caryophyllei, in which the number of the flamina is very various,
Fourthly, the fituation of the filaments in refpel to each other; as firft in the natural order of Linnæus termed ftellatæ, or a part of the tetrandria monogynia; the diverging filaments oppofe each other, and might be termed cruciform, as in galium, afperula. Or fe- condly, where five diverging filaments aflumie the appearance of a
., as in the natural order of umbellatæ, or a part of pentandria di-: gynia, and might have a name borrowed alfo from their number, like five-ftarred, or cinque-pointed, applied to the filaments, as men- tioned above,
Fifthiy, the adhefons of the filaments to each other at their bafe: This has given names to three clafles of the Linnæan fyftem, which approach to natural ones, under the term of brotherhoods:; as firff, where the filaments all adhere at their bafe, as in the clafs monadele phia; fecondly, where they adhere in two fets, as in the clafs dia- delphia; and thirdly, where they adhere in many fets, as in the
clafs polyadelphia.
Sixthly, the adhefions of the filaments to the corol, as where they adhere more than half their length to the internal part of it, as in many monopetalous flowers, as primula, auricula; or where the filament arifes from the petal, or where the anthers adhere to the margin of the petal, as in many of the natural order of fcitamineæ, as obferved in the Præle@. in Ord. Natur. a Gifeke, p. 189.
Seventhly, where the filaments adhere to the ftyle, as in the clafs gynandria, which approaches to a natural one. | Fighthly, the fituations of the flamina not in the fame flowers
with