VACCINIUM VACCINIACE.E 411 



V. nliginosum L. Sp. 350. Glabrous or minutely puberulent : stem 

 stiff, much branched, 6- 24 inches high : leaves thickish, mostly pale or 

 glancescent, obovate oval or oblong-cuneate, obtuse or retuse, reticulate- 

 veiny especially beneath, 5-12 lines long: corolla urn-shaped, globular or 

 ovate, solitary or 2-4 together: berries dark blue with a bloom, 3-4 lines in 

 diameter, sweet. Summits of the high mountains of Oregon to Alaska and 

 across the Continent. Also in northern Europe and Asia. 



Var. iiiucroiiatnm Herder. Depressed-eespitose : leaves small, 

 bright green both sides, conspicuously reticulated, usually roundish, 

 abruptly mucronate or cuspidate. Along the coast, southern Oregon to 

 Alaska. 



V. occidentale Gray Bot. Cal. i, 451. Glabrous shrub, 1-3 feet high: 

 leaves rather thin, glaucescent, obscurely veiny, from oval to obovate-ob- 

 long or oblanceolate, obtuse or acutish, 6-9 lines long: flowers mostly soli- 

 tary: corolla oblong-ovate: berries small, 2-3 lines in diameter. In high- 

 mountain marshes, Washington to California and Nevada. 



* * Flowers, solitary in the earliest axils, usually 5-merous and 

 10-androus : calyx less deeply or very slightly lobed. 



- Dwarf and cespitose : branchlets not angled. 



V. caespitosuui Michx. Fl. i, 234. Glabrous or nearly so 3-7 inches 

 high : leaves from obovate to cuneate-oblong, obtuse or rarely acutish thick- 

 ly serrulate, bright green both sides, reticulate-veiny; corolla ovate or 

 ovoid-oblong : berries large, blue with a bloom, sweet. On the highest 

 Mountains, Washington to Alaska and across the Continent. 



Var. cuneifolinm Nutt. Proc. Am. Phil. Soc, viii, 262. Stem 8-12 

 inches high, bushy: leaves spatulate-cuneate with rounded apex to spatu- 

 late-lanceolate and acute, the earliest not rarely entire. Mountains of Brit. 

 Columbia to California, Colorado, Utah and Lake Superior. 



V. arbuscula. V. cxspitosum var. arbuscula Gray. Stem erect, 6-18 

 inches high, much branched: leaves obovate, 5-7 lines long, thickish, pale 

 green : corolla oblong-ovoid : berries 2-3 lines in diameter, dark blue with 

 a bloom, sweet. In open pine forests, Alaska to California. 



*- *- Low : branches sharply angled and green : leaves small. 



Y. Myrtillus L. Sp. i, 349. " A foot or less high, glabrous: leaves 

 ovate or oval, thin, shining, serrate, conspicuously reticulated-veiny, and 

 with a prominent narrow midrib ( in ours half to two-thirds inch long ) : 

 limb of calyx almost entire : corolla globular-ovate : berries black, nodding. 

 Alaska to Idaho and the Rocky Mountains. Eu., Asia. " 



V. microphylluin. V. Myrtillus var. microphyllum Hook. Stem 

 erect, with numerous slender strict green branches and branchlets, 3-18 

 inches high : leaves ovate or oval, J-4 lines long, bright green : corolla ovate, 

 a line long : berries 1-2 lines in diameter, bright red, sweet. On the high- 

 est mountains, Washington to California and the Rocky Mountains. 



f- -*- Mostly tall with spreading branches. 



V. membranaceum Dougl. Hook. Fl. ii, 32. V. myrtilloides Hook, 

 not of Michx* Glabrous or glabrate, 1-5 feet high, with erect slightly an- 

 gled branchlets : leaves ovate or oval to oblong, sharply serrulate, mem- 

 branaceous, green both sides but not shining, loosely reticulate-veiny, 1-2 

 inches long, the larger and later ones mostly acute or acuminate : limb of 

 the calyx entire : corolla depressed-globular or semi-globose-urceolate : ped- 

 icels erect in fruit: berries 3-4 lines in -diameter, purplish-black, sweet. 

 On the high mountains, Alaska to California, and east to Lake Superior. 



Var. riffidnm Hook. Branchlets slightly pubescent and more com- 



