SCROPHULARIACEAE. 323 



Veronica humifusa Dickson. Perennial, glabrous or puberulent; stems 

 erect or decumbent, 10-15 cm. high; leaves opposite, oval, ovate or orbicular, 

 crenate-dentate or subentire, short-petioled, about 1 cm. long; racemes ter- 

 minal; bracts oblong, alternate; pedicels erect, equalling or exceeding the 

 calyx; corolla blue, dark-striped, 4 mm. broad; capsule orbicular, notched at 

 apex, as long as the calyx. 



Common in moist fields and copses. 



Veronica alpina L. Perennial, pubescent; stems simple, erect, 6-20 cm. 

 high; leaves ovate or oblong, entire or crenate; corolla blue, 4-6 mm. broad. 

 Common in alpine meadows. 



Veronica cusickii Gray. Perennial, glabrous except the glandular in- 

 florescence; leaves ovate or oblong, entire, thickish; corolla blue, 8-10 mm. 

 broad. 



In the Cascade Mountains, at high elevations. First found by Cusick, 

 in the Blue Mountains, in eastern Oregon. 



Veronica allenii Greenman. Much like V. cusickii, but the white corolla 

 smaller, 6-7 mm. broad. 



Mount Rainier, Allen; not otherwise known. 



4S3. LIMOSELLA. Mudwort. 



Very small glabrous annual herbs, stoloniferous, rooting and 

 creeping in the mud; leaves narrow, entire, fleshy, in dense 

 clusters around the simple 1 -flowered naked peduncles; flowers 

 small; calyx campanulate, 5-toothed; corolla rotate-campanu- 

 late, 5-cleft, nearly regular; stamens 4, all anther-bearing; style 

 short; stigma thickish; capsule many-seeded. 



Limosella tenuifolia Wolf. Tufted; leaves narrowly linear, not expanded 

 at the tip, 2-5 cm. long; 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. 



Muddy banks of streams, rare. 



454. MIMULUS. Monkey Flower. 



Herbs with mostly simple opposite leaves; flowers axillary, on 

 simple peduncles or by the redcution of the upper leaves 

 racemose; calyx prismatic, or rarely campanulate, usually 

 5-angled, 5-toothed, the upper tooth usually the largest; 

 corolla irregular, 2-lipped; upper lip erect or reflexed, 2-lobed, the 

 lower spreading, 3-lobed; stamens 4, all anther-bearing; stigma 

 2-lobed; seeds numerous. 



Corolla reddish or purple. 



Flowers very small, about 5 mm. long, pale purple. M. breweri. 



Flowers large, over 2 cm. long. 



Corolla scarlet; stamens exserted. M. cardinalis. 



Corolla rose-purple; stamens included. M. lewisii. 



Corolla yellow; stigmas 2-lipped. 



Calyx not angled, deeply 5-cleft. M. pilosus. 



Calyx 5-angled, 5-toothed. 

 Annuals. 



Corolla rather large M. nasutus. 



Corolla small. M. alsinoides. 



