146 



XI. DODECANDRIA 



1. MONOGYNIA. 



1. ASARIJM. Perianth single, 3-fid, superior. Caps. 6-celletl. 



2. LYTHRUM. Cal. inferior, with 12 teeth. Petals 6, inserted 

 upon the caU Cups, oblong, 2-celled. 



2. DIGYNIA. 



3. AGRIMONIA. Cal. 5-cleft, with a lobed appendage (Iractea) 

 at its base. Petals 5, inserted upon the caL Pericarps 2 in 

 the bottom of the cal. 



3. TRIGYNIA. 



4. RESEDA. Cal. of 1 leaf, divided. Petals laciniated. Caps. 

 of 1 cell, opening at the top. 



5. EUPHORBIA. Perianth single, monophyllous, inferior. Nec- 

 taries (petals Linn.) 4 5 inserted upon the perianth. Slam. 

 jointed. Caps, pedicellate, 3-lobed a . 



(TETRAGYNIA.) 

 (Tormentilla officinalis, Icos, POLYG.) 



4. DODECAGYNIA. 



6. SEMPERVIVUM. CaL 12-cleft. Petals 12. Caps. 12. 



1. MONOGYNIA. 



1. ASARUM. 

 1. A. europceum (Asaralacca), leaves binate rejiiform obtuse. 



E. B. t. 1083. 

 HAB. West Binny, near Linlithgow, Miss Liston. (Probably not 



really a native either of Scotland or of England.) Fl. May. 7/ . 

 Stem scarcely any, two opposite petiolated leaves springing almost 



a This gives, it must he confessed, a very erroneous notion of the struc- 

 ture of the flowers in 'Euphorbia. Jussieu first, I helieve, suggested the 

 idea of what had been hitherto considered a single flower, being an involu- 

 crnm, including 1 central pistiltiferous flower without anthers, and several 

 anther-bearing monandrous ones. Brown has proved this most satisfactorily ; 

 and further, that the support of the pistil has, at its summit, in some in- 

 stances, a 3-lobed cal. j and that the joint in the supposed filaments, is in 

 reality the termination of 'the flowerstalk, on which the stamen is seated, 

 without a trace of a perianth. See Mr. Brown's learned Dissertation on the 

 Botany of N. Holland, appended to Flinders' Voyage, and Linn. Trans. 

 v. 12. p. 99, 



