NO. I. GLOSSARY. 457 



Inter nodes, the spaces between the joints of a stem. 



Interruptedly-pinnate, pinnate with smaller leaflets intervening between 

 the larger ones ; as the leaves of Agrimony, Dropwort, and so on of 

 other compounds with this word. 



Interstices, see Channel. 



Inverse, inverted. 



Involucel, the little leaves or bracteae at the base of the secondary umbels 

 or umbellules ; sometimes called partial involucre. 



Involucre, the small leaves or bracteae situated at the base of umbels, and 

 usually denominated the general involucre ; also the common calyx of 

 Syngenesious flowers, which may be considered as imbricated bracteae. 

 See Coltsfoot, Dandelion, &c. 



Involute, rolled inwards. 



Irregular, unsymmetrical ; wanting equality or uniformity in the disposi- 

 tion of parts ; as the corolla of Mullein, Violet, Horse-Chestnut. 



J. 



Jagged, coarsely cut. 



Joints, the places at which the pieces of a stem are united to each other. 



K. 



Keel, carina ; when the midrib of a leaf or petal is sharp and elevated it is 

 called a keel ; the union of the two lower petals of papilionaceous flowers 

 into one is named a keel. 



Kidney -shaped, see Reniform. 

 Knee-jointed, bent like the knee. 



L. 



Labiate, having lips ; applied to the corolla of those plants which is sepa- 

 rated into two unequal divisions, hence also called bilabiate ; as Mint, 

 Lavender, Rosemary, Sage, Thyme, &c. 



Laciniated, slashed, cut or divided into unequal segments. 



Lactescent, yielding milky juice ; as the cormus of Colchicum. 



Lacuna, little pits or depressions* 



Lamellate, divided by little plates. 



Lamina, the expansion or blade of a leaf as distinguished from the stalk or 

 petiole ; also of a corolla, as distinct from its unguis or claw. 



Lanceolate, lance or spear-shaped, oblong, but attenuated at each end ; as 

 the leaves of Common Flax and Mezereon. Lanceolate-ovate, signifies 

 between lanceolate and ovate ; lanceolate -subulate, between lanceolate 

 and awl-shaped ; and so on. 



Lateral, on one side, or fixed near the side. 



Lax, loose, not compact. 



Leaflets, pinnae, small leaves, the parts of compound leaves. 



