LENTIBULARIACE^. 149 



5. P. marit'ima, L., var. juneoi'des, Gr., with very 



narrow and slender spike, and linear fleshy leaves, is found 

 on the sea-coast and Lower St. Lawrence. 



0. P. eriop'oda, Torr. Usually a mass of yellowish wool 

 at the base. Leaves thickish, oblanceolate to obovate, with 

 stout short petioles. Pod never more than 4-seeded. Atl. 

 sea-coast and N.W. 



7. P. Patagon'iea, Jacq., var. gnaphalioides, Gray. 



White with silky wool. Leaves oblong-linear to filiform. 

 Spike very dense, woolly. Dry soil, N.W. 



ORDER LVIII. LENTIBULARIACE^E. (BLADDERWORT F.) 



Small aquatic or marsh herbs, with a 2-lipped calyx and 

 a personate corolla with a spur or sac underneath. Sta- 

 mens 2. Ovary as in Primulacese. Chiefly represented by 

 the two following genera : 



1. I f Kl< I I A Kl V. L. BLADDERWORT. 



1. U. VUlga'ris, L. (GREATER BLADDER WORT.) Immersed 

 leaves crowded, finely dissected into capillary divisions, 

 furnished with small air-bladders. Flowers yellow, several 

 in a raceme orv a naked scape. Corolla closed ; the spur 

 conical and shorter than the lower lip. Ponds and slow 

 waters. 



2. U. interme'dia, Hayne. Immersed leaves 4 or 5 times 

 forked, the divisions Jinear-awl-shaped, minutely bristle- 

 toothed on the margin, not bladder-hearing, the bladders 

 being on leafless branches. Stem 3-6 inches long. Scape 

 very slender, 3-6 inches long, bearing few yellow flowers. 

 Upper lip of the corolla much longer than the palate ; the 

 spur closely pressed to the broad lower lip. Shallow waters. 



3. U. COrnu'ta, Michx., with an awl-shaped spur turned 

 downward and outward, and the lower lip of the corolla 

 helmet-shaped, is not uncommon in the northern parts of 

 Ontario. Flowers yellow. Leaves awl-shaped. 



4. U. Clandesti'na, Nutt. Stems and scapes slender. 

 Leaves hair-like, bearing small bladders, rinrolla yellow j 



