236 CAPRIFOLIACEAE. 



Viburnum pauclflorum Pylaie. High-bush Cranberry. Shrub, 1-2 m. 

 high, the branchlets glabrous; leaves orbicular or ovate, mostly 3-lobed, trun- 

 cate or subcordate at base, pubescent beneath; cymes peduncled, on short 

 2-leaved branches, small, 1-2 cm. broad; flowers white, all perfect; drupes 

 globose, red. Along streams in the mountains; infrequent. 



3S2. LINNAEA. Twin-flower. 



Creeping and trailing small evergreen herbs; leaves ovate or 

 orbicular, opposite, petioled; flowers in pairs, on the summit of 

 elongated terminal peduncles; calyx- teeth 5, awl-shaped, decidu- 

 ous; corolla funnelform, almost equally 5-lobed, purple and whit- 

 ish, hairy inside; stamens 4, two shorter, all included and inserted 

 near the base of the corolla; ovary and the small dry pod 3-celled, 

 but one seed ripening, the other ovules abortive. 



Linnaea borealis longiflora Torr. Twinflower. Stem perennial, trailing, 

 slender, pubescent, 30-100 cm. long; leaves obovate or orbicular, obtuse, 

 crenate above the middle, mostly cuneate at base, sparingly pubescent, 10-25 

 mm. long, short- petioled ; flowering branches erect, 8-10 cm. high, leafy below, 

 forked above into two, very rarely more, glandular pedicels, each bearing a 

 single nodding flower; calyx-lobes lanceolate, about twice as long as the very 

 glandular tube; corolla pink, hairy inside, 1-1.5 cm. long. In woods, in the 

 mountains. 



353. SYMPHORICARPOS. Snowberry. 



Low and branching shrubs; leaves oval or oblong, short- 

 petioled, entire or wavy-margined; flowers 2-bracteolate, in axil- 

 lary and terminal spikes or clusters, rarely solitary; calyx-teeth 

 5 or 4, short, persistent; corolla regular or nearly so, bell-shaped 

 to salverform, white or pink, 5- or 4-lobed; stamens as many as 

 the corolla-lobes, epipetalous; ovary 4-celled, two of these being 

 1-ovuled and fertile, the two alternate several-ovuled and sterile; 

 fruit globular and berry-like, containing 2 bony seed-like nutlets. 



Corolla cylindric-campanulate, 6-7 mm. long. 5. acutus. 

 Corolla campanulate, 2-5 mm. long. 



Erect shrub; leaves glabrous. 5. racemosus. 



Trailing shrub; leaves pubescent. 5. mollis. 



Symphoricarpos acutus (Gray) Howell. A much branched shrub, 30-100 

 cm. high; leaves thickish, oblong to orbicular, entire or coarsely lobed, obtuse 

 or rarely acute, densely and finely puberulent, 1-2 cm. long; corolla cylindric- 

 campanulate, pink, 6-7 mm. long, pubescent within, the tube 2-3 times as 

 long as the lobes; stamens and style included, glabrous; berries white. In 

 rocky places, especially abundant in the Blue Mountains. 



Symphoricarpos racemosus Michx. Erect much branched shrub, 30-90 

 cm. high; leaves ovate or oval, acute or obtuse, rounded or cuneate at base, 

 entire or on vigorous shoots sinuately-toothed or lobed, pubescent beneath, 

 short-petioled, 1-4 cm. long; flowers in terminal and axillary racemes; corolla 

 pink, campanulate, 4-5 mm. long, villous on the lobes within, these obtuse, 

 shorter than the tube; stamens and style included; berries white. Common 

 in open woods. 



Symphoricarpos racemosus laevigatus Fernald. Leaves glabrous beneath, 

 usually thicker. Common in open prairies. 



