Flora of the Palouse Region 7 1 



pink, 2-lobed; scales oblong, obtuse; claw broad, with a short auricle 

 on each side at the apex. Grassy hillsides, common. 



S. SCOuleri Hook. Perennial, puberulent throughout, glandular viscid 

 above: stems erect, simple, 40-60 cm. tall, solitary or tufted: radical leaves 

 lanceolate or oblanceolate, 4-6 cm. long, on slender petioles of equal length: 

 cauline several pairs, sessile at the swollen nodes, lanceolate, 5-8 cm. long: 

 inflorescence narrow, elongated: flowers short-pedicelled, one or several in 

 the axils: calyx cylindrical or club-shaped, 10-15 mm. long, with 10 dark 

 nerves and short scarious-margined teeth: petals two-cleft, the lobes notched: 

 auricles of the claw narrow, cleft into narrow lobes. Dry woods, Thatuna 

 Hills. 



106. SAPONARIA. 



Annual or perennial herbs: leaves ovate or ovate-lanceolate, 

 sessile or petioled: flowers in corymbs or cymes: calyx 5-toothed, 

 ovoid, oblong or cylindric in flower: petals 5, longer or shorter 

 than the calyx: stamens 10: styles 2; ovary i-celled or incom- 

 pletely 2-4-celled: capsule dehiscing with 4 teeth. 



S. vaccaria L. Annual, glabrous and glaucous, 20-60 cm. tall, usually 

 much branched above: leaves ovate or ovate-lanceolate, acute, somewhat 

 connate at base, 3-6 cm. long: calyx with 5 salient angles: petals rose-pink, 

 without appendages, 2 cm. long. A troublesome weed in grain fields. 



107. STELIvARIA. 



Annual tufted generally diffuse herbs: leaves flat, rarely subu- 

 late; stipules none: flowers solitary or cyrnose, terminal orj[becom- 

 ing lateral: sepals 5 or 4:*petals 5 or4, rarely none, always]more or 

 less deeply bifid, often divided almost to the base, white: stamens 

 3-10: styles 3 or 4, rarely 5: capsules globose, ovoid or oblong, 

 dehiscing by twice as many valves as there are styles. 



Lower leaves ovate, petioled. 



vStems pubescent in lines. V S. media. 



Stems smooth, shining. S. nitens. 

 Leaves narrow, sessile. 



Seeds very rough. S. GRAMINEA. 



Seeds smooth. S. i.ongtpes. 



S. media L. ' [Annual, weak and spreading: stems weak, 10-30 cm. long, 

 glabrous except a line of hairs: lower leaves ovate, petioled, the upper nar- 

 rower and sessile, all acute, 4-5 mm. long: flowers solitary in the axils or 

 somewhat cymose, on slender pedicels: calyx glandular-pubescent, nearly as 

 long as the capsule: petals deeply 2-parted, shorter than the sepals: stamens 

 3, 5 or 10. Introduced and becoming common. 



S. Ilitens Nutt. Annual, somewhat tufted: steins erect, slender, shining, 

 8-15 cm. tall, branched above, pubescent only at base: lowest'pair of leaves 

 ovate, acute, petioled, 4 mm. long; the 'others linear-lanceolate and sessile, 

 5-10 mm. long: cymes loose, few-flowered, the bracts scarious; pedicels 

 thread-like, 1-5 cm. long: sepals 3-nerved, very acute, scarious-margined, 4 



