PIPER FLORA OF THE STATE OP WASHINGTOK. 507 



LIMOSELLA. 



Leaves filiform-linear 1. L. tenuifolia. 



Leaves spatulate or oblong 2. L. aquatica. 



1. LimoseUa tenuifolia Hofl'm. Deutsch. Fl. 1^: 29. 1804. 

 Type locality: Germany. 



Range: Washington; Labrador to New Jersey. Europe. 



Specimens examined: Kalama, Piper, October 31, 1901; Lake Chelan, E/^rt^r 491. 



Perhaps only a subspecies of L. aqiCatica. 



2. Limosella aquatica L. Sp. Pi. 2: 631. 1753. 



Type locality: "Habitat in Europac septentrionalis inundatis" 



Range: Alaska to Labrador, south to California and Colorado. Europe. Asia. South 

 America. 



Specimens examined: White Salmon, Suksdorf; Ritzviile, Sandberg cfc Leiberg 193. 



MIMULUS. 

 Flowers reddish or purple. 



Corolla with a ver^- long slender tube 1 . M. subunifiorus. 



Corolla with a moderate tube. 

 Stigmas funnelform. 



Leaves elliptic, acute; corolla 1 .5 to 2 cm. long 2. M. nanus. 



Leaves ovate, acuminate; corolla 2 to 2. .5 cm. long 3. M. cusiclcii. 



Stigmas 2-lipped. 



Flowers very small, about .5 mm. long, pale purple 4. AI. breweri. 



Flowers large, over 2 cm. long. 



Corolla scarlet; stamens exserted 5. M. cardinalis. 



Corolla rose-purple; stamens included (S. M . levnsii. 



Flowers yellow; stigmas 2-lipped. 



Calyx not angled, deeply 5-clcft 7. M . pilosus. 



Calyx 5-angled, 5 toothed. 

 Perennials. 



Flowers solitary on scapes 8. M. primuloides. 



' Flowering stems leafy. 



Leaves pinnately veined. 



Herbage glabrous 9. M. dentatus. 



Herbage slimy-viscid, musk-scented \0. M. moschatus. 



Leaves palmately veined. 

 Rootstocks wanting. 



Stems stout or stoutish, 10 to 60 cm. high; 

 leaves not viscid; corolla 2 to 5 cm. 



long : 11. M. langsdorfii. 



Stems very slender 5 to 20 cm. high, few- 

 flowered; corolla 12 to 15 mm. long; 



leaves small 13. M. microphyllus. 



Rootstocks present. 



Stems 2 to 4 cm. high, mostly 1-flowered; 

 plants stoloniferous, densely matted, 



alpine 12. J/, aljnnvs. 



Stems 10 to 20 cm. high, mostly several- 

 flowered, arising from slender matted 



rootstocks; herbage slimy-viscid \A. M . implexus. 



Annuals. 



Corolla rather large; leaves palmately veined 15. M. nasutus. 



