4)4 XOMKXCI.ATUllE. 



case they are always divided into two. In the branches of the 

 Unibelhv, the first division is expressed by dichotcnnus, the 

 second by b'lfidus. Also i^eduncuU, rami trichotomi are not 

 unfrequent ; for instance, in the panicle of some of the 

 species of Avena. 



A simple forked division is expressed by furcatiis. 



51. 



With respect to the iminterrupted continuation of an or- 

 gan, we find its simplicity subject to the following alterations 

 and reverses. We have already remarked (38.), that when 

 a part ))roceeds uninterruptedly forward, it is called cont'inuus. 

 In the Confervae, there are contracted parts (jstricturcE), which 

 are exceptions to this simplicity ; (Tab. V. Fig. 10.) In the 

 stem and branches there are knots (iiodi)^ swellings produced 

 by a crowding of substance, and which contain within them- 

 selves the means of increase. On the base of the leaf-stalk 

 also {Osteospermum moniliferuvi)^ similar knots appear. 



When no indentation takes place at the margin of the 

 part, we have the idea of smooth-margined {integer rimiis)^ 

 in which case there is thus also no interruption of the pro- 

 gress in a line. 



Indentations of the margin are caused by teeth, notches, 

 and cirrhi. 



Teeth are, in general, pointed projections on the margin. 

 The rim is called dentated (dentatus), when there are in- 

 terstices between these pointed projections ; but when the 

 teeth run into each other, the rim is said to be serrated (ser- 

 ratus)- Forms of nearly the same kind are, denticulated 

 (denticulatus), and serrulated {serridatus), (Tab. VIII. Fig. 

 3.) ; as also, coarsely dentated {grosse denta fits'), deeply, 

 unequally, equally, doubly, and obsoletely dentated (pro- 

 fimde, inaqualiter, aquaUter, duplicato, and obsolete denta- 

 tus). AVe say also, equally, unequally, sharply, hooked, 

 connivent, doubly, obsoletely serrated (regualifer, infpquali- 

 ter, argute, uncinato, connivcnti, dupUcato, obsolete s.er- 

 ruins). 



