GLOSSARY OF TERMS. 



Neutral flowers, without either stamens or pistils. 



Nodose, having nodi or knots. 



Nodules, small hard knots. 



Nut, a seed enveloped with a hard shell, which does not Ijurst, ])]. 13, 



fig. l,a 

 Ntclcus, the kernel. 



O 



Ob. indicative that a thing is inverted. 



Ohcordute, inversely cordate, pi. IS, fig. 5, o; pi, 30, fig. 2, 



Oblique, pi. is, fig. 5,0 ; pi. 29, fig. S. 



Ohovate, inversely ovate. 



Octandrous, ha\-ing eight stamens, pi. 17, fig- 8. 



Oleraceous, esculent, eatable. 



Opercular, covered with a lid. 



Operculum, a lid. 



Oppositely pinnate, when the leaflets of a pinnate leaf are opposite, 



pi. 30, fig. 6. 

 Orbicular, round and flat, pi. 28, fig. 2. 



Oval, the length greater than the breadth, and both cuds alike rounded. 

 Ovary, the part of a flower in which the seeds are contained. 

 Ovate, egg-shaped, pi. 28, fig. 4. 

 Ovate-lanceolate, between ovate and lanceolate. 

 Ovoiily egg-like. 

 Ovules, the young seeds of plants within the ovary. 



Palate, the moutli of a ringent, and of a personate corolla, pi. 9, fig. 2 p. 

 Palmate leaf, having several oblong segments exteudmg to the middle, 



pi. 29, fig. 6. 

 Panduriform, fiddle-shaped, pi. 28, fig. 18. 

 Panicle, a mode of flowering resembling fig. 3, pi. 35, page 74. 

 Papilioimceous, butterfly-shaped flowers, page 12, pi. 9, fig. 4. 

 Papillose, producing small soft prommences. 

 Pappus, an appendage crowning the seeds or fruit of plants of the class 



Syngenesia, page 21, pi. 15, figs 2, 3. 

 Partial umbel, the secondary divisions of an umbel, pi. 2, fig. 2 

 Partial involucre, bracteae of the secondary divisions of an umbel, pi. 2, 



fig. 2, b. 

 Patent, spread out, or expanded, pi. 32, fig. 4. 

 Pectinate, pinnatifid, resembling the teeth of a coml). 

 Pedate leaf, a temate leaf, ha\Tng its lateral leaflets divided into several 



segments, pi. 30, fig. 4. 

 Pedicellate, slightly stalked. 

 Pedicels, small footstalks of flowers. 



Peduncle, flower-stalk. ^ 



Pellicle, a thin skin. 

 Peltate leaf, when the petiole, or stalk is fixed in the middle, instead of 



the margin, pi. 32, fig. 14. 

 Pentagynous, having five pistils. 

 Pentandrous, having five stamens, pi. 17, fig. 5. 

 Penfapetalous, having 5 petals, pi. 7, fig. 4 

 Perennial, continuing many years, page 61. 

 Perfectfloivers, having both stamens and pistils. 

 Perfoliate, when the stem passes through the leaf, pi. 32, fig. 13. 

 Perianth, a calyx contiguous to the corolla ; a term applied when the 



calyx caimot be distmguished from the corolla. 

 Pericarp, a seed-vessel, pages 6 and 18. 



