ORDER 73. ERICACEAE. 493 



23. CYRIL'LA, L. (In honor of Dominica Cyrilli, physician and 

 botanical author, Naples.) Calyx 5-parted, minute, petals 5, distinct, 

 pointed, spreading; stamens 5, hypogynous anthers opening length- 

 wise; style short, with 2 stigmas; capsule 2-celled, 2-seeded, indehis- 

 cent; seeds suspended. A large shrub with the branches irregularly 

 whorled, with entire, elliptic-oblong, perennial Ivs, and the white fls. in 

 slender clustered racemes. 



C. racemiflora Walt. Margins of swamps and streams, in pine barrens, N. Car. 

 to Fla. Shrub 12 to 18f high, with spreading branches and a light gray bark. 

 Lvs. varying from oval to narrow-oblong, mostly acute, very smooth, tapering to 

 a short petiole. Fls. very small, in racemes 4 to 6' long. The racemes and new 

 branches simultaneously spring from tho apex of the preceding years' growth, 

 Jn. 



24. MYLOCA'RIUM, Willd. BUCKWHEAT TRBK. (Gr. juuA??, a mill, 

 Kdpvov, a kernel, a fanciful name.) Calyx 5-toothed, minute ; petals 5, 

 obovate, obtuse ; stamens 10, very short ; pistil with winged angles ; cap- 

 sule corky, 2 or 3-winged, 3-celled, with 3 subulate seeds. An ever- 

 green shrub, with branches irregularly whorled, elliptical Ivs., and ter- 

 minal rac. of white, fragrant fls. 



M. liguatrinum Willd. Borders of swamps, Ga. and Fla. A perfectly smooth, 

 elegant shrub, 4 to 8f high. Lvs. thick, rather acute, entire, flat, veinless, ses- 

 sile, 1' to 18" long. Fruit drupe-like, pendulous, 2, rarely 3 of the angles pro- 

 duced into corky wings, suggesting the idea of buckwheat Apr., May. ., 



SUBORDER IV. PYROLE^. THE WINTERGREEN TRIBE. 



25. PYR'OLA, Salisb. WINTS&GREEN. (Lat. diminutive of Pyrus, 

 as the leaves (of P. elliptica) resemble those of the pear tree.) Calyx 

 5-parted; petals 5, equal ; stamens 10, anthers large, pendulous, fixed 

 by the apex, 2-horned at base, opening by 2 pores at top ; style thick 

 as if sheathed ; stigmas 5, appearing as rays or tubercles ; capsule 5- 

 celled, 5-valved, opening at the angles, many-seeded. Low, scarcely 

 suffruticous, evergreen herbs. Lvs. radical or nearly so, entire. Scapes 

 mostly racemous, from a decumbent stem or rhizome. (Fig. 345.) 



Stamens and style straight. Stiginas peltate, 5-rayed Nos. 1,2 



JS Stamens ascending. Style declined and curved. Stigma 5-tubercled. (a) 



a Leaves dull (not shining). Petals greenish-white Nos. 3,4 



a Leaves th,ck and shining. Flowers white or rose-colored Nos. 5, 6 



1 P. secunda L. Lvs. broadly ovate, acute, subserrate, longer than the pe- 

 tiole; rac. secund; cor. oblong. In dry woods, Can. and Nor. States. Plant 5 to 

 8' high, bearing one or two fascicles of leaves near the base. Lvs. acute at each 

 end, with appressed-pointed serratures, appearing crenate. Pod. scape-like, bear- 

 ing a 1-sided cluster of 10 to 15 greenish-white fls. Petals oblong, shorter than 

 the style. Jn., Jl. 



2 P. minor L. Lvs. roundish-ovate, coriaceous, repand-crenulate ; petioles dilated at 

 base, shorter than the laminae ; rac. subspicate ; bract equaling or exceeding tha 

 very short pedicels; cal. lobes short, subacute ; sty. included in the globular cor- 

 olla. -In woods, White Mts., N. H., and Brit. Am. Scape angular, 6 to 9' high, 

 Lvs. mucronulate at apex. Cor. white, slightly tinged with purple. Jl. 



3 P. chlorantha Swartz. Lvs. orbicular, crenulaie, half as long as the narrmc' 

 petiole ; rac. few-flowered ; segm. of the cal. very short, obtuse ; pet. oblong ; 

 pores of the anth. conspicuously tubular ; stig. projecting beyond the sheath. In 



woods, Can. and N". States, common. Lvs. smaller than in either of tho follow- 

 ing, often perfectly orbicular, but more frequently inclining to ovate, \ to 1' diam., 

 smooth, shining, coriaceous, petioles 1 to 2' long. Scapes erect, angular, 8 to 12' 

 high, bearing a long open raceme. Fls. nodding, large, petals greenish white 

 Jn., Jl. 



