Flora of the Palouse Region 169 



Cymes flat-topped. S. GLAUCA. 



Cymes pyramidal. S. MELAXOCARPA. 



S. glauca Nutt. Shrub, 2-5 m. high, glabrous throughout, somewhat 

 glaucous: young pith white: leaves pinnate; leaflets 5-9, thickish, oblong or 

 ovate-lanceolate, acuminate, sharply serrate, short-stalked, paler beneath, 

 8-12 cm. long; lower leaflets sometimes more or less divided; subulate stip- 

 els occasionally present: cymes usually 5-rayed, large, flat-topped: flowers 

 white, 4-5 mm. broad: fruit black, very glaucous; nutlets rugose. Common 

 along streams. 



S. melanocarpa Gray. Shrub, 2-3 m. high: young pith brown: leaflets 

 5-9, oblong or narrowly ovate, long-acuminate, sharply and evenly serrate, 

 cuneate at base, puberulent but glabrate, 4-6 cm. long: inflorescence broadly 

 pyramidal: flowers white, 3 mm. broad, turning brown when dried: fruit 

 black, without a bloom; nutlets rugose. Thatuna Hills, rare. 



281. VIBURNUM. 



Shrubs or small trees: leaves simple, commonly toothed, some- 

 times deeply lobed: flowers white, in flat compound cymes: calyx 

 5-toothed: corolla spreading, deeply 5-lobed: stamens 5, exserted: 

 stigmas 1-3: fruit a 1 -celled 1 -seeded drupe with soft pulp and a 

 thin crustaceous stone. 



V. paucifiorum Pylaie. Shrub, 1-2 m. high, the branchlets glabrous: 

 leaves orbicular or ovate, mostly 3-lobed, truncate or subcordate at base, 

 pubescent beneath; petioles 4-8 cm. broad: cymes peduncled, on short 

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

 globose, red. Along streams, Thatuna Hills, rare. 



282. LINNAEA. 



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. 



L. borealis var. longiflora Torr. Stem perennial, trailing, slender, pubes- 

 cent, 30-100 cm. long: leaves obovate or orbicular, obtuse, crenate above the 

 middle, mostly cuneate at base, sparingly pubescent, 1-2.5 cm. 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 verv glandular 

 tube: corolla pink, hairy inside, 1-1.5 cm. long. In woods, Thatuna Hills. 



283. SVMPHORICARPOS. 



Low and branching shrubs: leaves oval or oblong, short-peti- 

 oled, entire or wavy-margined: flowers 2-bracteolate, in axillary 

 and terminal spikes or clusters, rarely solitary: calyx-teeth 5 or 4, 



