412 Introduction to Botany. 



In'ternode (L. inter, between ; nodus, a knot) : the portion of the stem be- 

 tween the nodes or places where the leaves arise. 



Intramar'ginal : within and near the margin. 



Intro rse' (L. infra, on the inside ; versus, toward) : facing inward or toward 

 the axis. 



Invol'ucel (L. diminutive of involucrum, a wrapper) : a secondary involucre. 



Involu'cral : pertaining to an involucre. 



Involu'cre (L. involucrum, a wrapper) : an assemblage of bracts subtending 

 a flower or flower cluster. Invol'ucrate : having an involucre. 



In/volute (L. involvere, involutum, to wrap up) : rolled inward. Fig. 285. 



Irreg'ular: applied to flowers whose individual members of a set of organs 

 are unlike in form. 



Junc'oid (L.Juncus, a rush ; Gr. eidos, resemblance) : rush-like. 



Keel : the two anterior or lower petals of a papilionaceous corolla which are 

 united in the form of a keel of a boat. Figs. 266 and 267, k. 



Key or key '-fruit: a winged fruit, such as of the maple or ash; a samara. 

 Fig. 320. 



Kid'ney-shaped : crescent-shaped, with rounded ends ; reniform. Fig. 227. 



La'biate (L. labium, lip) : having the limb of calyx or corolla divided as in 

 Fig. 276. Belonging to the Labiatse. 



Lac'erate : irregularly cleft or jagged, as if torn. 



Lacin'iate (L. lacinia, the flap of a garment) : provided with a jagged, irreg- 

 ular fringe. 



Lamel'la (L. lamella) : a thin plate or scale. 



Lan'ceolate : lance-shaped; narrow and tapering toward each end, as in 

 Fig. 220. 



La'tent (L. latens, hidden) : applied to buds which lie dormant for a number 

 of years without losing their power of developing when conditions are 

 favorable. 



Lat'eral : borne on the side of an organ. 



La'tex (L. latex, juice) : the milky secretion of such plants as Euphorbia. 



Laticif 'erous (L. latex + ferre, to bear) : latex-bearing. 



Lax : loose and slender. 



Leaflet : one of the separate divisions of a compound leaf. 



Leaf -stalk : the stem or petiole on which the leaf is borne. Fig. 262, b. 



Leg'ume (L. legumen, pulse or any leguminous plant) : a pod dehiscing into 

 two valves and having the seeds all attached on one sidfc. Fig. 313. 



Legu'minous : pertaining to a legume or to the order called Leguminosae. 



