342 POLYADELPHIA. 



Citrus^ the Orange, Lemon, &c., Lamarck t, 639, 

 most unquestionably belongs to this Order. Its 

 stamens are about nineteen or twenty, combined 

 variously and unequally in several distinct parcels ; 

 but those parcels are inserted into a proper recep- 

 tacle, by no means into the calyx, as the character 

 of the Class Icosandria indispensably requires. Even 

 the number of the anthers of Citrus accords better 

 with most plants in Dodecandria than in Icosandria^ 

 notwithstanding the title of the latter. 



2. Icosandria. Stamens numerous, their filaments 

 inserted (in several parcels) into the calyx. — To 

 this Order Professor Willdenow properly refers 

 Melaleuca, Exot, Bot, t. 34 — 36, 55, 56, which 

 had previously stood in Polyandria, botanists having 

 only considered number and not insertion in the 

 Orders of Polyadelphia, whence a double mistake 

 has arisen, concerning Citrus on the one hand, and 

 Melaleuca on the other. 



3. Polyajidria. Stamens very numerous, unconnected 

 with the calyx. This Order consists of several ge- 

 nera. The most remarkable is Hypericum, Engl. 

 'Bot. t. 109, 1225 — 1227, &c., ^v'hose stamens are 

 United into three or five parcels, corresponding with 

 the number of its styles. Mu7ichhausia is a Lager- 

 stromia, nor does it appear to be polyadelphous at 

 all. Linnaeus seems to have intended bringing Tliea 

 into this Order ; see Mojiadelphia Polyandria. 



