338 MOiVADELPIIIA. 



Class 16. Monadelphia. Stamens united by their 

 filaments into one tube. Orders 8, distinguished by 

 the number of their stamens. 



1. Triandria is exemplified by Sisyrinchium, Ic. Pict. t. 

 9, and Ferraria^ Curt. Mag. t. 144, 532, both erro- 

 neously placed by Linnceus in Gt/nandria. Also the 

 singular Cape plant Aphyteia, consisting of a large 

 flower and succulent fruit, springing immediately 

 from the root, without stem or leaves. On this plant 

 Linnaeus published a dissertation in 1775. Tama- 

 rindns has lately been removed hither from the third 

 Class, perhaps justly. 



2. Pentandria. Erodium, Engl. Bot. t. 902, separated^ 

 with great propriety, from Geranium by L'Heritier j 

 Hcrmannia^ a pretty Cape genus, Curt. Mag. t. 307 ; 

 and a few other plants, more or less akin to the Mal- 

 low tribe, compose this Ord<T ; to which also strictly 

 belong some species of Linum^ Geranium^ &c. Pas- 

 s'ljiora^ removed from Gynandria, belongs most un- 

 questionably to Pentandria Trigynia^ and by no means 

 to this Class, 



3. Heptandria consists only of Pelargonium of L'Heri- 

 tier, an excellent genus, comprising most of the Cape 

 Geraniums, and marked by its irregular flower, 7 

 stamens, and tubular nectary. 



4. Octandria zox\XAns Aitonia^ Curt. Mag. t. 173, nam- 

 ed in honour of the excellent and universally respected 

 author of the Hortus Kewensis. Pistia is, I believe 

 justly, placed here by Schreber and Willdenow. 



