44 



Naturalized. Said of introduced plants 



which are reproducing by self-sown seeds. 

 Nectar. A sweet secretion in flowers, which 



becomes honey after being gathered by 



bees. 



Nectariferous. Bearing nectar. 

 Nectary. An organ secreting nectar. 

 Nerve. A simple or unbranched vein. 

 Node. The place on a stem where the leaves 



appear. 



Nodose. Knotty. 

 Nut. A hard 1 -celled, 1 -seeded indehiscent 



fruit. 



Nutlet. Diminutive of nut. 

 Obconic. Inversely conical. 

 Obcordate. Inversely heart-shaped. 

 Oblanceolate. Inversely lanceolate, i. e., 



broader towards the apex. 

 Oblique. Slanting or with unequal sides. 

 Oblong. Longer than broad, and widest near 



the center. 

 Obovate. The inverse of ovate, i. e., broader 



towards the apex. 

 Obovoid. The inverse of ovoid. 

 Obtuse. Bluntly pointed; greater than 



right angle. 



Opposite. Said of leaves or leaflets ar- 

 ranged in pairs on opposite sides. 

 Orbicular. Circular. 



Orthotropous. Descriptive of a straight 

 erect ovule with hilum at one end and 

 micropyle at the other. 



Oval. Broadly elliptical, broader than " ob- 

 long." 



Ovary. The ovule-bearing portion of a 

 pistil. 



Ovate. Applied to leaves, etc., which are 

 egg-shaped in outline, broader towards 

 base. 



Ovoid. Egg-shaped, applied to solids, broader 

 near base. 



Ovule. The embryonic seed. 



Ovuliferous. Bearing ovules. 



Palmate. Hand-shaped, with lobes or leaf- 

 lets radiating from apex of petiole liko 

 fingers. 



Panicle. A compound raceme. 



Paniculate. Arranged in panicles. 



Papilionaceous. Butterfly-like, descriptive 

 of flowers of the Pea family. 



Papillose. Rough with minute blunt pro- 

 jections. 



Parietal. Pertaining to the wall, as of an 

 ovary. 



Parted. Divided but not entirely to base. 



Pectinate. Pinnatifid with narrow close 

 comb-like teeth. 



