SYMPHORICARPOS, VIBURNACE. 281 
XYLOSTEON. 
§ 1. Corolla urceolate or open-campanulate, only 2-3 lines 
long. | 
S. occidentalis Hook. Fl. i, 285. Glabrous or strictly pubescent: ro- 
bust; leaves oval or oblong, thickish, 2 inches long; axillary flower clus- 
ters not rarely pedunculate, sometimes becoming spicate, 4-12 lines long: 
corolla 3 lines long, 5-cleft to below the middle; densely villous-hirsute 
with long hairs within: stamens and style more or less exserted; style 
glabrous; fruit white. Rocky grounds, eastern Oregon to Michigan and 
north to lat. 64 degrees. 
S. racemosus Michx. Fl. i, 107. An erect shrub, 2-10 feet high, with 
slender branches: leaves round-oval to oblong, 6-18 lines bong, entire, or 
those of young and vigorous shoots sometimes irregularly lobed or toothed, 
smooth above, more or less pubescent beneath: flowers in short and sev- 
eral-flowered axillary clusters or spikes: corolla 2-3 lines long, 5-lobed 
above the middle, villous-bearded within; narrowed at base: stamens not 
exserted; style glabrous, not exceeding the stamens: fruit white, 3-8 
lines in diameter. Common, California to Alaska and across the con- 
tinent. 
S. pauciflorus S. racemosus var. pauciflorus Robbins, at least in part. 
A prostrate shrub with slender stems 1-8 feet long: leaves oval to oblong, 
6-18 lines long; the lower ones and those of vigorous shoots variously 
lobed or toothed: flowers in small, 1-few-flowered, loose spikes; corolla 
small, 5-lobed above the middle, villons within: stamens not exserted; 
style glabrous, not longer than the corolla: fruit white when mature, cle- 
pressed globose, 3-6 lines in diameter. In forests, Uregon and Washing- 
ton, west of the Cascade Mountains. : 
S. acutas 8S. mollis var. acutus Gray Syn Fl. i, 14. Low, diffuse or 
decumbent, soft-pubescent; leaves oblong-lanceolate to oblong, acute at 
both ends or acuminate, sometimes irregularly and acutely dentate, very 
soft-tomentulose: flowers solitary or in short clusters; corolla open-cam- 
panulate, with a’ broad base, 5-lobed above the middle, barely pubescent 
within; stamens and style included. Washington to California, east of 
the Cascade Mountains. 
§ 2. Corolla from oblong-campanulate to salverform, 5-lobed 
only at the summit: flowers mostly axillary. 
S. rotundifolius Gray Pl. Wright ii 66. Tomentulose or glabrate: 
stems rigid, much-branched, 1-3 feet high: leaves from orbicular to ob- 
long-elliptical, thickish, 6-9 lines long: entire or coarsely lobed: corolla 
elongated-campanulate, 3-4 lines long, its tube pubescent within below the 
stamens, twice or thrice the length of the broad lobes: stamens and style 
included: fruit white, globular or oblong; nutlets oval, equally broad and 
obtuse at both ends. On rocky ridges in mountainous districts, Washing- 
ton to California and New Mexico. . 
S. oreophilus Gray Journ Linn. Soc. xiv, 12 Glabrous or some- 
times with soft pubescence: leaves oblong to broadly oval, thickish, 6-10 
lines long: corolla tubular, 4-6 lines long, its tube almost glabrous within, 
4 or 5 times as long as the broad lobes: nutlets of the white drup> oblong, 
- flattened attenuate and pointed at base. Mountains of eastern Oregon to 
California and Arizona. 
5 XYLOSTEON Tourn. 
LONICERA § XYLOSTEON DC. Prodr. iv, 333. 
Erect or merely trailing shrubs with membranaceous leaves 
that are all distinct, and rather small flowers on usually 2-flow- 
