152 PRINCE'S PINE. 



shining, orbicular (round) or round-ovate, shorter than their 

 dilated petioles. The scape is 6-12' high, 6-12-flowered, 

 bracted. The calyx lobes ovate ; the petals round-obovate, 

 nearly white. Style clavate, twice bent downward, longer 

 than the petals which are thrice longer than the sepals. 



The Name, in Latin as in English, is Pyrola, a diminu- 

 tive of Pyrus, the Pear-tree ; because of the resemblance of 

 the leaves, whence it is also called, Pear Wintergreen. The 

 species here figured and described is P. rotundifolia, the 

 round-leaved. 



Another species, P. elliptica, has elliptical and oval leaves, 

 thinner in texture, scape bractless, and sepals very short. 

 The learner may also have found P. secunda (Fig. XXXVIII, 

 8), which has the flowers of its raceme all turned one side, a 

 straight style, serrulate leaves not all radical, and other dif- 

 ferences which are easily noted.* 



Scientific Terms. Clavate. Converging petals. Generic char- 

 acters. Orbicular. Specific characters. Vertical section. t 



XL. PRINCE'S PINE. 



Description. In the same woodlands where the Pyrolas 

 grow, or in the drier portions of them, you may also detect 

 the Prince's Pine, or, as it is called in the Indian tongue, 

 Pipsissewa. The affinities of this comely plant with the 



* In the States E. of the Mississippi River, 6 species of Pyrola are known, and ana- 

 lytically distinguished in Wood's Object Lessons as follows : 

 Stamens ascending, style declined and curved., .a. 

 Stamens and style straight and erect. . .Nos. 5, 6. 



a Leaves thick and shining. Flowers white or rose-colored, Nos. 1, 2. 



a Leaves green, not shining. Flowers greenish- white, Nos. 3, 4. 



1 P. rotundifolia. Round-leaved P. Leaves orbicular. Mostly white petals. 



2 P. asarifolia. Heart-leaved P. Leaves round-cordate. Rose-colored petals. 



3 P. elliptica. Pear-leaved P. Leaves large, thin, elliptical. Scape bractless. 



4 P. chlorantha. Green-fl. P. Leaves small, thick, roundish, shorter than petioles. 



5 P. secunda. One-sided P. Eaceme with the green-white flowers all on one side. 



6 P. minor. Lesser P. Raceme spike-form, with small, globular, white flowers. 



