56 



NOMENCLATURE. 



plant to others. But all the parts which come under the name 

 by no means deserve it. 



The tendril (cirrhus) is a filiform, and for the most part 

 bent body, by which the plant clings to other objects. It is 

 distinguished sometimes by its origin out of the leaves or leaf- 

 stalk (foliares, petiolares j, sometimes by the number of the 

 leaves which grow under it. Hence cirrhi diphylli, tetra- 

 phylli, and so forth. 



Absorbent warts (haustoria) are spungy bunches, which 

 supply the place of roots in some parasitic plants, and by which 

 they attach themselves to other plants. 



80. 



Among what have been called the armour of plants (arma)^ 

 we place the spines {spina).) or woody and sharply pointed 

 processes, which spring from the wood itself, or generally 

 from the internal parts. They appear not only on the stem 

 and branches, but also on the leaves and calyx. 



Prickles (aculei), again, are similar stiff, and prickly 

 points, which rise only from the epidermis, and are taken off 

 along with it. 



The awn (arista), we have already noticed, (56.) It is 

 a hair-shaped and stiff prolongation of the body. The bristle 

 {seta), is distinguished only by its smaller length, and in some 

 instances by its being a continuation of the nerves. 



The hook {hamus, uncus) is a bristle or prickle, bent at 

 the point. The double hook (glochis) is a bristle or prickle, 

 with reflex subordinate branches at the point. Hence we see 

 the meaning of the terms uncinatus, hamosus, and ghchi- 

 datus. 



The opposite of these different kinds of armour is express- 

 ed by inermis and muticus, in reference to the points. 



81. 



Scales {squama) are for the most part roundish or pointed 

 membranaceous parts. 



Glands {glandulae) are granular, commonly transparent 



