FOR FORMS AND fciUALITIES. 



ters. 1. We may consider the situation of parts, in reference 

 to the things which surround them. We thus call them 

 floating^ submersed, buried. Of these we shall speak on an- 

 other occasion. 2. We may consider the situation of a part, 

 in relation to the organ which lies under it. This is called 

 the insertion {inse?'tio)^ which is either mediate or immediate. 

 The mediate insertion supposes an intervening substance, by 

 which means a kind of articulation is produced. Such an in- 

 sertion, we observe, for instance, in the labia of some of the 

 Orchideae, as in Dendrobium, Sw. 



When we mean to signify, generally, that one organ rises 

 out of another, or is inserted on it, we form a derivative from 

 the name of the organ which serves as its support. We thus 

 say, radicalism caulinus, rameus, petiolaris. These denote 

 that which springs from the root, from the stem, the branches, 

 or the leaf-stalks, or which is inserted on them ; Flores pe- 

 tiolares of Turnera cuneiformis, (Tab. V. Fig. 12.) We al- 

 so sometimes form words from the names of both the organs, 

 — from that which is inserted, and that which serves as the 

 support. We thus say calycijlorus, calycosteman, (when 

 the filaments spring from the calyx) ; gynandrus, (when the 

 anthers are set upon the pistillum) ; rhizanthus, thalami- 

 Jlorus, (when the flower is set on the receptacle.) 



We also use the prepositions epi and hypo, to denote more 

 precisely the insertion. We thus say, epipetalus, JiypophyU 

 lus, and so forth. Lastly, [the expressions dorsalis, lateralis, 

 basilaris, terminalis, are important. We signify by them 

 that an organ is inserted; on the back, on the sides, on the 

 base, or on the summit. 



We also attend to the situation, as it is in the centre, or 

 in the axis, (centralis, axilis), or out of the centre (excentri-- 

 cus) ; and also to the tendency towards the centre, or from 

 the centre, (centrifugus, centripetus) ; which terms are espe- 

 cially employed respecting the situation of the embryon, and 

 its radicle in the albuminous substance. 



