BOTANICAL TERMS ATSfD DEFINITIONS. 
xxxi 
Incomplete Flower, {Flos incompletus) flowers are so called 
when wanting the corolla ; corollas also are called incom- 
plete when some part appears to be wanting : as in a papi- 
lionaceous flower consisting of the vexillum only, or in a 
rosaceous one with a single lateral petal, as if four others 
had been stripped off".* 
InjEQualis, vide Unequal. 
Inerme, vide Unarmed. 
Inflexed, {Iriflexum vel Incurvum) applied to leaves curved inward. 
Inflorescence, (Injlorescentia) is used by Linnaeus to express the 
particular manner in which flowers are situated upon a 
plant ; denominated by preceding writers modus Jlorendi, 
or manner of flowering. Botanists distinguish ten diflferent 
kinds of inflorescence, named Whorl, Cluster or Raceme, 
Spike, Corymb, Fascicle, Head or Tuft, Umbel, Cyme, 
Panicle, and Bunch — these are described under their 
respective names. 
Inflndibuliformis, vide Funnel-shaped. 
Integerrimum, t7</e Entire. 
Internodal, {Internodis) applied to flower-stalks proceeding from 
the intermediate space of a branch between two leaves. 
Interruptedly, {Interrupte) applied to compound leaves when 
the principal leaflets are divided by intervals of smaller 
ones ; applied also to spikes 6f flowers, when the larger 
spikes are divided by a series of smaller ones. 
Involucre, (Involucrum) a species of calyx, remote from the 
flower, and bearing a great resemblance to Bracteze : the 
involucre is composed of many small leaves placed at 
the foot of the general umbel ; in umbelliferous plants the 
involucre accompanying the partial umbels, is called Invo- 
lucella. 
Involute, {Involutum) applied to leaves, when the margins are 
rolled inwards upon each other. 
Involving, (Involvens) appUed to the position of leaves in sleep, 
i. e. during the night season ; and implies that the leaves 
approach each other by their summits only, forming an 
arch or hollow underneath. 
Irregular Corolla. The term irregular is used in opposition to 
regular, and implies that the general figure is not uniform. 
* Smith's Introd. p. 205. 
