GLOSSARY OF BOTANICAL TERMS. 225 



HYPANTHODIUM, the expanded receptacle of the fig. 

 HYPOCRATERIFORM, shaped like a salver ; a flower with a long 



tube and a flat limb. 

 HYPOGYNOUS, inserted beneath the ovarium. 



ICOSANDRIA, having 20 or more stamens inserted on the calyx. 



IMBRICATED, overlying each other as the tiles on a house. 



IMMERSED, plants sunk under water. 



IMP ART-PINNATE, ending in an odd leaflet. 



IMPERFECT, an organ incapable of performing its functions. 



INCISED, cut down to the middle. 



INCLUDED, not extending beyond the corolla. 



INCUMBENT, the radical applied to the back of the cotyledons. 



INCURVED, bending inwards. 



INDEFINITE, stamens exceeding twenty, an uncertain number, not 



readily counted. 



INDEHISCENT, not opening, not splitting when ripe. 

 INDETERMINATE, flowering from the circumference to the centre, 



centripetal. 



INDUPLICATE, when the edges of an organ are -curved slightly in- 

 wards in aestivation. 

 INDUSIUM, the membranous covering of the clusters or sori in 



Ferns. 



INFERIOR, an ovary below calyx is said to be inferior. 

 INFLEXED, bent inwards. 



INFLORESCENCE, the disposition and arrangement of flowers. 

 INFUNDIBULIFORM, funnel-shaped. 

 INNATE, an anther inserted upon the filament. 

 INSERTED, growing upon an organ, as a stamen upon the calyx. 

 INTERNODE, the space between two joints. 

 INTERPETIOLAR, stipules springing from between the petioles of 



opposite leaves. 

 INTERRUPTEDLY-PINNATE, small pinnoe placed alternately with 



large ones. 



IXTIXE, the inner coat of the pollen grain. 

 INTRORSE, when the anther opens next the pistil. 

 INVOLUCRE, the bracts at the base of an umbel, or surrounding 



the capitula in compound flowers, sometimes a single organ 



distant from a simple flower. 



INVOLUCEL, the involucre of the secondary umbel. 

 INVOLUTE, rolled from the back inwards. 

 IRREGULAR, flowers in which symmetry of parts is wanting. 

 ISOMEROUS, when the organs of a flower are each composed of an 



equal number of parts. 



JOINTS, the spaces between the nodes or joinings. 

 JUGATE, leaves joined in pairs. 



KEEL, the lower petal or carina in papilionaceous flowers. 



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