330 GLOSSARY. 



Pentandria, five males, tlie fifth class in the sexual system of 

 Linnaeus. 



Pentapetala, corolla, a flower consisting of five petals. 



Pentaphyllus calyx, a calyx consisting of five leaves. 



Perenms radix, a perennial root, continuing for many years. 



Perfectus jios, flowers having petals, the perfect flowers of 

 Ray, Tournefort, and other botanists. 



Perfoliatumyb/i'ww, when the base of the leaf entirely sur- 

 rounds the stem, or when the stalk grows through the 

 centre of the leaf, as in Crassula perfoliata. 



Perforati cotyledones, to be pierced through, a species of the 

 monocotyledones exemplified in the gramma ; also an or- 

 der of plants in the Fragmenta methodi naturalis of Lin- 

 naeus. 



Perianthium, s a kind of calyx, so called when contiguous to 

 the fructification. 



Pericarpium, a species of pod that contains the seed. 



Perichsetium, a modification of the receptaculum in the mus- 

 ci and algee. 



Peristoma, in tkeMusci, the membranaceous rim which sur- 

 rounds the mouth of the Theca. 



Perpendicularis radix, a perpendicular, or downright root. 



Personata, corolla, monopetalous, irregular, and closed by a 

 kind of palate, as in Antirrhinum. 



Personatae, masked, an order of Plants in the Fragmenta me- 

 thodi naturalis of Linnaeus. 



Pes, a foot. 



Petaliformia stigmata, a stigma resembling the shape of a 

 petal. 



Petalodes fios, a flower having petals. 



Petal um, the corollaceous teguments of a flower. 



Petiolaris cirrhus, a tendril proceeding from the footstalk of 

 a leaf. 



Petiolatum folium, a leaf growing on a footstalk. 



Petiolus, a little footstalk. 



Pileus, a hat or bonnet, the orbicular expansion of a mush- 

 room, which covers the fructification. 



Pili, hairs. 



Pilosum folium, leaves whose surface is covered with long 

 distinct hairs. 



Pinnatifidumyb//Mw, (a winged leaf) applied to simple leaves 

 whose Iacmia3 are transverse to the rachis. 



Pinnatum folium, a winged leaf. 



Piperitae, pepper, an order of plants in the Fragmenta me- 

 thodi naturalis of Linnaeus. 



Pistillum,, 



