226 DICOTYLEDONOUS PLANTS. 



OBS. In the arrangement and description of our species of Pijrola, 

 I have mainly adopted the views expressed by Mr. Don in his valu- 

 able monograph of this genus. Wernerian Transactions, v. 220. 



* Valves of the capsules with their margins connected by an intricate finr 



tomentum, dehiscent at the base. Leaves alternate. Flmcers in racemes. 



t Stamens ascending. Style dedinatc, Idngcr than the petals. Stigma 



annulate. 



1. P. rotund if olio, Linn. : leaves roundish, very entire or crenulate, 

 coriaceous, shorter than the dilated petiole ; scape triquetrous ; seg- 

 ments of the calyx lanceolate, acute ; stigma clavate, obtusely 5-tooth- 

 ed. 



HAB. Woods. Can. to Car. July. 1. Leaves all radical, 

 evergreen, sometimes scarcely half the length of the petioles. 

 Scape a foot or more high. Flowers cernuous, white, in an erect 

 elongated raceme, emitting a fragrant smell. The largest of 

 the whole genus. Round-leaved Winter green. 



2. P. asarijol'ni ftfich. : leaves reniform, coriaceous, repandly ere- 

 nate, half as long as the dilated petiole ; scape acutely triquetrous ; 

 raceme many-flowe'red ; segments t>f the calyx ovate, acuminate, ap- 

 pressed ; stigma clavate, with the disk elongate'd and 5-lobed. 



HAB. Dry woods. Can. and N. S. If. Mr. Don considers 

 this to be entirely distinct from the next, with which it is con- 

 founded by IVfr. Nuttall. " The leaves," he observes, " appear 

 to be subject to some slight variations , but in the true state 

 they are of a reniform shape, nearly about the size and form of 

 those of Jlsarum europeum ': this remarkable character, if con- 

 stant, would alone have been sufficient to- distinguish it from 

 every other species. The plant itself, is about the size of 1'. 

 rotund if oliti, which it greatly resembles in the figure and dispo- 

 sition of its flowers, which are of a greenish-white colour." 



3. P. chlorantha Sir<irl~: leaves orbicular, retuse, obsoletely crenu- 

 late^ half as long as the narrow petiole ; raceme few-flowered ; seg- 

 ments of the calyx very short, obtuse ; petals oblong ; pores 1 ' of tlie 

 anthers tubular ; stigma clavate, with the disk elongated and 5-lobed. 

 P. rotundifolia vaf. mummularia Muni. Cat. 



HAB, Woods. Can. and N. S. 2/. 



4. P. elliptica Nutt. : leaves elliptic or ovate, membranaceous, serru- 

 late, longer than the dilated petiole ; raceme few-flowered ; bracts 

 lanceolate-subulate, recurved at the summit ; segments of the calyx 

 very short, with recurved points ; petals oval : stigma clavate. with 

 the disk elongated and 5-lobed. 



HAB. Dry woods. Can. and N. S. July, Aug. If. Leaves 

 membranaceous, finely serrate, oblong-oval, sometimes ovate, 

 with an attenuated base, much longer than the petiole. Raceme 

 few-flowered. Flowers white, odorous. Allied to P. rotundifo- 

 lia, but is smaller. 



tt Stamens erect. Style straight. Stigma not annulate. 



5. P. minor Linn. : leaves roundish or oval, coriaceous, repandly- 



