ERICACEAE. 139 



SUBORDER III. PYROLE^). (PYROLA FAMILY.) 



Calyx free from the ovary. Corolla, polypetalous. More or 

 less herbaceous evergreens. 



13. Py'rola. Calyx 2-parted. Petals 5, concave. Stamens 10. Stigma 



5-lobed. Leaves evergreen, clustered at the base of an upright 

 scaly -br acted scape which bears a simple raceme of nodding 

 flowers. 



14. Moiie'ses. Petals 5, orbicular, spreading. Stamens 10. Stigma 



large, peltate, with 5 narrow radiating lobes. Plant having the 

 aspect of a Pyrola, but the scape bearing a single terminal flower. 



15. < liiiuaph ila. Petals 5, concave, orbicular, spreading. Stamens 



10. Stigma broad and round, the border 5-crenate. Low plants 

 with running underground shoots, and thick, shining, sharply 

 serrate, somewhat whorled leaves. Flowers corymbed or um- 

 belled on a terminal peduncle. 



SUBORDER IV. MONOTROPE^E. (INDIAN -PIPE FAMILY.) 



16. Monot'ropa. A smooth perfectly white plant, parasitic on roots, 



bearing scales instead of leaves, and a single flower at the summit 

 of the stem. 



17. Pteros'pora. A purplish-brown clammy-pubescent plant, parasitic 



on the roots of pines. Stem simple. Flowers numerous, nodding, 

 white, forming a raceme. 



18. Hypop'itys. A tawny or reddish parasitic plant, with several 



flowers in a scaly raceme, the terminal one generally with 5 

 petals and 10 stamens, and the others with 4 petals and 8 stamens. 



1. <;AYU SSA <IA, H.B.K. HUCKLEBERRY. 



1. G. resino'sa, Torr and Gr. (BLACK HUCKLEBERRY.) 

 Fruit black, without a bloom. Racemes short, 1-sided, in 

 clusters. Leaves oval or oblong. Branching shrub, 1-3 feet 

 high. Low grounds. 



2. G. dumo'sa, Torr. and Gr. (DWARF HUCKLEBERRY.) 

 Fruit black, insipid. Eacemes long, with leaf-like, persis- 

 tent bracts. Leaves obovate, oblong, mucronate. Sandy 

 low ground, Atl. Prov. 



2. VACCIN'IIIM, L. CRANBERRY. BLUEBERRY. 

 1. V. OxyCOe'CUS, L. (Oxycoccus vulgaris, Pursh, in 

 Macoun's Catalogue.) (SMALL CRANBERRY.) A creeping or 



