1 62 Flora of the Palouse Region 



larger, spreading, 3-cleft: anther-bearing stamens 2: sterile fila- 

 ments unequally 2-forked, exserted: stigma 2-lobed: capsule many- 

 seeded. 



I. gratioloides Benth. Glabrous, simple or branched from the base, 5-12 

 cm. high: leaves sessile, ovate, acute or with a few teeth, 1-2 cm. long, the 

 upper ones reduced: pedicels slender, twice as long as the leaves, spreading 

 in fruit: flowers 6-8 mm. long: calyx-lobes linear, as long as the purple 

 corolla: capsule ovoid-oblong, 4-6 mm long. Sandy banks of Snake River, 

 rare. 



271. UMOSELLA. 



Very small glabrous annual herbs, stoloniferous, rooting and 

 creeping in the mud: leaves narrow, entire, fleshy, in dense clus- 

 ters around the simple 1 -flowered naked peduncles: flowers small: 

 calyx campanulate, 5-toothed: corolla rotate-campanulate, 5-cleft, 

 nearly regular: stamens 4, all anther-bearing: style short; stigma 

 tbickish: capsule many-seeded. 



L. aquatica Iv. Tufted: leaves spatulate, obtuse, 2-5 cm. long, the blade 

 usually much shorter than the petiole: peduncles shorter than the leaves: 

 corolla white or pinkish, 2 mm. broad, hardly longer than the calyx: capsules 

 globose, obtuse, 2-2.5 mm. long. Reported from near Moscow by Professor 

 Henderson. 



272. SYNTHYRIS. 



Perennial herbs: leaves alternate, crenate, the radical roundish 

 or cordate: flowers small, purplish or green, in a spike or raceme: 

 calyx 4-parted: corolla campanulate, with 4 more or less unequal 

 lobes, or sometimes none: stamens 2, from just below the upper 

 sinuses, or in one apetalous species on the hypogynous disk, ex- 

 serted: stigmas simple: capsule many-seeded. 



Petals blue. S. reniformis. 



Petals none: spike reddish. S. rubra. 



S. reniformis var. major Hook. Glabrous below the inflorescence: stems 

 10-30 cm. high: leaves all basal, orbicular, 2-5 cm. broad, reniform at base, 

 with many short lobes, these coarsely crenate: petioles much longer than 

 the blades: scapes erect, the raceme spike-like; a few bracts below the inflor- 

 escence: calyx-lobes oblong, obtuse: corolla blue: capsule flattened, notched 

 at apex, 5-7 mm. long. Kamiack Butte, near the summit. 



S. rubra Benth. Rrect, 30-50 cm. high, whitish-pubescent throughout: 

 basal leaves ovate, obtuse, somewhat cordate and cuneate at base, crenate, 

 2-6 cm. long, long-petioled; cauline smaller, sessile: spike densely flowered: 

 calyx greenish or reddish, the sepals oblong, viscid-pubescent, 4 mm. long: 

 corolla none: stamens much exserted, inserted on the hypogynous disk: 

 capsule globose, somewhat flattened, rounded at apex, longer than the 

 sepals. Common on grassy hillsides. 



