406 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Corolla rose-red 1. M. lewisii. 



Corolla yellow. 



Stems covered with long weak hairs; calyx lobes nearly equal in length. 



2. M. moschatus. 

 Stems glabrous or with minute hairs; calyx lobes very unequal. 



Corolla 25 to 30 mm. long 3. M. caespitosus. 



Corolla 5 to 15 mm. long. 



Calyx lobes obtuse; corolla 8 to 15 mm. long 4. M. glabratus. 



Calyx lobes acute; corolla 5 to 8 mm. long 5. M. hallii. 



1. Mimulus lewisii Pursh. Red monkeyflower. Common about timber line 

 and frequently found along streams at middle elevations; in wet ground, especially 

 along streams. B. C. to Calif., Colo., and Minn. — Stems 30 to 60 cm. high, usually 

 tufted, finely hairy and somewhat viscid; leaves oblong or ovate, 4 to 8 cm. long, 

 sharply toothed; corolla 3.5 to 5 cm. long. 



A showy plant, often growing in dense masses, especially along brooks. 



2. Mimulus moschatus Dougl. Muskflower. Infrequent; near Sun Camp 

 and along Snyder Creek; in wet thickets or along brooks in deep woods. B. C. to 

 Calif., Colo., and Ont. — Stems slender, prostrate or creeping, very viscid; leaves 

 slender-stalked, ovate, 2 to 5 cm. long, finely toothed. 



This species is often cultivated, but it is far from being a showy plant in its wild 

 state. 



3. Mimulus caespitosus Greene. Yellow monkeyflower. Common above or 

 near timber line, usually along brooks or on wet banks. B. C. to Calif., Colo., and 

 Mont. — Stems 10 to 20 cm. high, usually forming dense clumps; leaves broadly 

 ovate or rounded, 1 to 2 cm. long, sessile or short-stalked; flowers usually 2 or 3 on 

 each stem; corolla bright yellow, the throat spotted with brownish purple. 



One of the most handsome plants of the park, frequently occurring in the greatest 

 profusion. In Rydberg's Flora this is united with M. langsdorfii Don, but in size 

 and in habit of growth it is very unlike the common forms of that species. The 

 plants of Glacier Park are quite uniform in size and habit. 



4. Mimulus glabratus H. B. K. Baring Falls, on wet mossy cliffs. Mont, to 111., 

 Mex., and S. Amer.— Stems long and weak, glabrous, prostrate or nearly so; leaves 

 rounded, 1 to 4 cm. long, sparsely toothed, short-stalked; flowers few, in the leaf 

 axils. 



5. Mimulus hallii Greene. Baring Falls, on mossy cliff in the spray of the falls. 

 Mont, to Colo. — Stems slender, 5 to 15 cm. long, glabrous; leaves rounded or broadly 

 ovate, 0.5 to 1.5 cm. long, entire or slightly toothed. 



The Glacier Park plants are only 3 to 5 cm. high and are, therefore, much smaller 

 than is usual in the species. The specimens were determined by Mrs. A. L. Grant as 

 a depauperate form ot M. hallii. 



6. LIMOSELLA L. 



1. Limosella aquatica L. Mudwort. East entrance, about pools, Umbach. B. C. 

 to Calif., N. Mex., and Lab.; also in Eur. and Asia. — Annual, with slender runners; 

 leaves oval to oblanceolate, 0.5 to 3 cm. long, entire, obtuse, on very long slender 

 petioles; flowers solitary on slender stalks; corolla white, 2 mm. long, 5-lobed. 



7. GRATIOLA L. 



1. Gratiola ebracteata Benth. Wet open places at east entrance. B. C. to Calif, 

 and Mont. — Annual, 3 to 15 cm. high, branched, nearly glabrous, with stout succulent 

 stems; leaves linear or lanceolate, 1 to 3 cm. long, sessile, entire or finely toothed; 

 flowers in the axils of the leaves, stalked; corolla yellowish white, 6 to 8 mm. long. 



