ERICACEAE (HEATH FAMILY) 371 



the pouches upward, the salient keels running to the apex of the lobes and to 

 the sinuses. 



1. KalmiapolifoliaWang.Ges. Naturf. Fr. Berl.Sohr. 2: 130. 1788. Shrub 

 2-5 dm. high, glabrous, mostly glaucous, branchlets 2-edged: leaves all oppo- 

 site or rarely in threes, almost sessile; oblong or linear-oblong, or appearing 

 narrower by the usually strong revolution of the edges, glaucous-white be- 

 neath: flowers in spring in a simple terminal umbel or corymb, lilac-purple, 

 12-1 5 mm. in diameter. K.glauca. [Var. microphyllaRook.; K . microphylla 

 (Hook.) Heller, Bull. Torr. Bot. Club 25: 581. 1898.] Bogs; Colorado and 

 northward, thence eastward across the continent. The forms extending south- 

 ward into the Colorado mountains are depauperate alpine forms, 1-2 dm. high, 

 and with leaves about 12 mm. long. 



5. LEDUM L. LABRADOR TEA 



Low shrubs, with alternate, persistent leaves, which are entire and more or 

 less resinous-dotted, slightly fragrant when bruised. Flowers white, developed 

 in early summer from terminal or sometimes lateral buds; pedicels recurved 

 in fruit. 



1. Ledum glandulosum Nutt. Trans. Am. Phil. Soc. 8: 270. 1843. Shrub 

 5-15 dm. high, stout: leaves oblong or oval, or approaching lanceolate, 3-5 cm. 

 long, glabrous both sides, pale or whitish and minutely resinous-atomiferous 

 beneath: inflorescence often compound and crowded: capsules oval, retuse. 

 From California northward and eastward into British America; occurring in 

 the northwestern border of our range. 



6. GAULTHERIA L. CREEPING WINTERGREEN 



Shrubs, with alternate evergreen leaves, and small axillary white, red, or 

 pink flowers. Calyx 5-parted or 5-cleft, persistent. Corolla urn-shaped or 

 campanulate, 5-toothed or 5-lobed. Stamens 10, included; anther-sacs open- 

 ing by a terminal pore, commonly awned. Stigma obtuse, entire; ovary 

 5-celled, 5-lobed. Calyx becoming fleshy and at length surrounding the cap- 

 sule, forming a berry-like fruit. 



1. Gaultheria humifusa (Graham) Rydb. Mem. N. Y. Bot. Gard. 1: 300. 

 1900. Caespitose-procumbent or depressed, glabrous, the flowering branches 

 3-10 cm. long: leaves oval or rounded, mostly only 12-14 mm. long: pedicels 

 solitary in the axils, very short, 3-5-bracteolate: corolla depressed-campan- 

 ulate, little surpassing the calyx: fruit scarlet, 5-6 mm. in diameter. G 

 myrsinites. In the woods in the mountains; our range and northwestward. 



7. ARCTOSTAPHYLOS Adans. BEARBERRY 



Shrubs. Leaves alternate, petioled, firm or coriaceous, evergreen. Flowers 

 small, nodding, pediceled, white or pink. Calyx 4-5-parted, persistent. 

 Corolla 4-5-lobed, the lobes recurved. Stamens 10, rarely 8, included; an- 

 thers short, with 2 recurved awns on the back, the sacs opening by a termi- 

 nal pore. Ovary 4-10-celled; ovules solitary in the cavities; style slender. 

 Fruit a berry-like drupe, with 4-10 seed-like nutlets coherent into a solid 

 stone. 



1. Arctostaphylos uva-ursi (L.) Spreng. Syst. 2: 287. 1825. Depressed- 

 trailing or creeping, green: leaves coriaceous and evergreen, oblong-spatulate, 

 retuse, 1-2 cm. long, tapering into a petiole: flowers rather few in simple 

 small clusters, 4-5 mm. long: ovary and reddish fruit glabrous: nutlets 1- 

 nerved on the back. From New Mexico to Pennsylvania, California, and 

 northward. Often called KINNIKINNICK as well as BEARBERRY. 



