GLOSSARY. 405 



Or chideovs plants. A natural order of plants in the class Gynandria, having 

 irregular flowers, a remarkable lip, and glutinous pollen. Related to the 

 genus Orchis. 



Oval. Elliptical ; as the leaves of Magnolia glattca. Med. Bot. P). 27. 



Ovate. Egg shaped. Oval with the lower end largest; as the leaves of Sub- 

 balia angularis. Med. Bot. PI. 57. 



P 



Palate. A large obtuse projection which closes the throat of a personate 



flower. 



Paleaceous. Chaffy. 

 Palmate. Hand shaped. Deeply divided into spreading and somewhat equal 



segments; as the leaves of Podophyllum peltatum Med. Bot. PI. 23. 

 Panduriform. Contracted in the middle like a violin. 

 Panicle. A loose, irregular bunch of flowers, with subdivided branches; as 



in Stalice Caroliniana. Med. Bot. PI. 25. 



Papilionaceous. Having an irregular corolla like the pea blossom ; consist- 

 ing of four petals, of which the uppermost is called the banner ; the two 

 lateral ones wings ; and the lower one, which is commonly boat shaped, 

 the keel. Mostly belonging to the class Diadelphia. 

 Pappus. The down of seeds A feathery appendage. 

 Parasitic. Growing on another plant and drawing nourishment from it. 

 Parenchyma. The cellular substance of vegetables. 

 Partial. This term is applied to small or constituent parts in distinction from 



general. 



Partition. The dividing wall in seed vessels. 

 Parted. Deeply divided ; more than cleft. 

 Pectinate. Like the teeth of a comb. Intermediate between fimbriate and 



pinnatifid 

 Pedale. Having central segment or leaf which is simple, and two lateral 



ones which are compound. 



Pedicel. The ultimate branch of a peduncle. A litlle stalk. 

 Peduncle. A stem bearing flowers or fruit, which is the branch of another 



stem. 



Pellicle. A very thin stratum or coat. 

 Peltate. Having the stalk attached to some part of the surface or disc, and 



not to the margin. 

 Pendulous. Hanging down. 



Pencilled. Ending like a painter's pencil or brush. 

 Pentandrous Having five stamens. 

 Perennial. Lasting more than two years. 



Perfect flower One which possesses stamens and pistils, and produces fruit. 

 Pei foliate. Surrounding the stem on all sides and perforated by it. It differs 



from connate, in not consisting of two leaves. 

 Perianth. A sort of calyx which is immediately contiguous to the other 



parts of fructification. 



Pericarp. A seed vessel, or whatever contains the seed. 

 Permanent. See Persistent. 



Persistent Not falling off. Those parts of a flower are persistent which re- 

 main till the fruit is ripe. 



Personate. Masked. Having the mouth of tho corolla closed by a promi- 

 nent palate. 



Petal. The leaf of a corolla, usually coloured. 

 Petaloid. Resembling petals. 

 Petiole. The stalk which supports a leaf. 

 Phanogamous. Not Cryptogamous. Applied (o all plants which have visible 



stamens and pistils. 



Pilose. Hairy. With a stiff' pubescence. 

 PinnfE. The leafets or divisions of a pinnate leaf. 



Pinnate. A leaf is pinnate when the Icafels are arranged in two rows on the 

 sides of a common petiole ; as in lilius rerm.r. Med. Bot. PI. 10. 



