KINDS OP STEMS. 95 



tions of Linnaeus, particularly the second Man- 

 tissa, but I know not that he has any where ex- 

 plained its meaning. It is exemplified in Azalea 

 nudiflora, Curt. Mag. t. ISO, Erica Tetrallr, 

 Engl. Bot. t. 1014, many Cape Heaths, and 

 other shrubs of the same Natural Order. 



Articulatus, jointed, as in Samphire, Salicornla 

 annua, Engl. Bot. t. 415, and more remarkably 

 in the Indian Figs, Cactus Tuna, c. 

 In shape the Stem is 



Teres, f. 32, round, as in Trolllus europceus, Engl. 

 Bot. t. 28, and Hydrangea hortensis, Sm. Ic. 

 Plct. t. \ 2. 



Anceps, two-edged, as Sisyrinchium striatum, Sm. 

 Ic. Plct. t. 9. S. gramincum, Curt. Mag. t. 464, 

 and some of the genus Lathyrus. 



TrigomiSy or Triangularis, triangular or three-edged, 

 as Cactus triangular is, Plukemt, t. %9,f. 3. 



Triqueter, three-sided, is applied to a stem with 3 

 flat sides. 



Tetragonus, or Quadrangularis, square, as Lamium 

 album, White Dead-nettle, Engl. Bot. t. 768, 

 and a multitude of other plants. 



Pcntagonus, or Quinquangularis, five-sided, as 

 Asparagus horridus, Cavaridles Ic. t. 1 36, where 

 however the character is not well expressed. 



When the number of angles is either variable, 

 or more than five, it is usual merely to describe 

 the stem as angulosus, angular, except where the 



