A GUIDE AND KEY TO AQUATIC PLANTS 



11 



Ovate. — Having an outline like that of an egg, with the broadest part downward 



(fig. 67). 

 Ovoid. — Egg-shaped; see ovate. 



Panicle. — An irregularly compound flower cluster with stalked flowers (fig. 68). 

 Paniculate. — With a panicle-like inflorescence. 

 Papillose. — Bearing small pimple-like projections. 

 Pedicel. — The stalk of a single flower (fig. 69). 



Peduncle. — The stalk which supports a flower cluster or a solitary flower. 

 Peltate. — Petiole attached not at margin of leaf but in the middle of the lower 



surface (fig. 70). 



Figure 67. 



Figure 68. 



Pedicel 



Figure 69. 



Figure 70. 



Perennial. — A plant of more than two years' duration. 



Perianth. — The calyx and corolla taken together (fig. 71). 



Perianth-bristles. — Rudimentary perianth parts in sedges (fig. 2). 



Perigynium. — The inflated sac which contains the ovary or fruit of Carex. 



Persistent. — Not falling off or away. 



Petal. — A member of the inner circle of flower parts; often colored and showy 



(fig. 72). 

 Petiole. — The stalk of a leaf (fig. 73). 

 Pistil. — The seed-bearing part of a flower (fig. 74). 



Perianth 



Figure 71. 



Peial 



Figure 72. 



Petiole 



Figure 73. 



Figure 74. 



