66 GLOSSARY 



Inflorescence The portion of a plant bearing the flowers; mode of arrangement of 



flowers 

 Integument A protecting layer or coat, as the covering of a seed 

 Internode The part of the stem between two successive nodes 

 Involucre A group of leaves or scale-like leaves borne just underneath a flower or a 



close cluster of flowers 

 Involucral Of an involucre 

 Irregular Applied to a flower in which the petals, or other parts, are unlike 



Keel The two fused lower petals of the flower of the Pea Family 

 Keeled Ridged, like the keel of a boat 



Lanceolate Shaped like a lance 



Lemma The outer scale of a grass flower 



Lenticular Shaped like a lens 



Ligule A strap-shaped organ, as the rays in the Asteraceae 



Ligulate In the form of a strap 



Linear Long and narrow with sides nearly parallel 



Linear-lanceolate Narrowly lance-shaped 



Lip Each of the main upper and lower divisions of a zygomorphic corolla or calyx; 



the peculiar modified petal of an orchid flower 

 Lipped Having a lip 



Monoecious Bearing stamens and pistils on the same plant but in different flowers 



Nerve One of the lines or ridges running through a leaf 



Net-veined Veins running in various dirctions and connecting with each other 



Netted-veined Veins running in various directions and connecting with each other 



Nodding Hanging on a bent pedicel 



Node The part of the stem which normally bears a leaf 



Nut A dry, one-seeded, indehiscent fruit with a stony shell or covering 



Nutlet A diminutive nut 



Obcordate Inversely heart-shaped 



Oblanceolate Inverse of lanceolate 



Oblong Somewhat longer than broad, with the sides nearly parallel 



Oblong-lanceolate Broadly lance-shaped 



Obtuse Rounded or blunt 



Opposite Applied to organs inserted at the same level but 180 degrees apart 



Orbicular Circular 



Ovary The part of the pistil in which the young seeds are borne 



Ovate Shaped like the outline of an egg 



Ovule A young seed 



Palet The inner scale of a grass flower 



Palmate Radiately lobed or divided 



Palmately In a palmate manner 



Panicle A compound flower-cluster, the lower branches longest and blossoming 



first 

 Pappus The bristles, hairs, awns and like structures which are borne upon the fruit in 



the Chicory and Aster Familes 

 Parasitic Growing upon and getting its nourishment from some other plant 

 Parted Deeply cleft 



Peduncle The stalk of a flower or of a flower-cluster 

 Pedicel The stalk of a flower in a flower-cluster 



Peltate Shaped like a shield with a stalk attached in the middle below 

 Perennial Lasting from year to year 

 Perfect A flower having both stamens and pistles 

 Perfoliate Leaves appearing to be pierced by the stem 



