VACCINIUM VACCINIACEAE 411 



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

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

 glaucescent, obovate oval or oblong-cuneate, obtuse or retiise, reticu- 

 .late-veiny especially beneath, 5-13 lines long: corolla urn-shaped, glob- 

 ular 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 Ore- 

 gon to Alaska and across the Continent. Also in northern Europe 

 and Asia. 



Var. mucronatum Herder. Depressed-cespitose : 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. caespitosum Michx. Fl. i, 234. Glabrous or nearly so, 3-7 inches 

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

 thickly 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. cuneifoliumNutt. Proc. Am. Phil. Soc. viii, 262. Stem 8-12 inches 

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

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

 Columbia to California, Colorado, Utah and Lake Superior. 



V. arbuscula. V. caespitosum 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. 



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

 ovate or oval, thin, shining, serrate, conspicuousely 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, nod- 

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



V. microphyllum. V. Myrtillus var. microphyllum Hook. Stem erect, 

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

 high : leaves ovate or oval, 2-4 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, 

 •t- -1- ••- Mostly tall with spreading branches. 



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

 not of Michel;. 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 : 

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

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



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

 pact: leaves rigid. In the mountains of Brit. Columbia and Washington. 



