PIPER FLORA OF THE STATE OF WASHINGTON. 507 



LIMOSELLA. 



Leaves filiform-linear. 1 . L. tenmfolia. 



Leaves spatulate or oblono; 2. L. aquatica. 



1. Limosella tenuifolia Ilollni. Deiitsch. Fi. 1-': 29. 1804. 

 Type locality: Germany. 



Range: Washington: Laliradoi- to New Jeiscv. KurojX'. 



Specimens examined: Kalama, Flptr, Octoljer ol, 1901 ; [juke Cliclan, Elim r 491. 



Perliaj^s only a subspecies of L. (Kjuaticd. 



2. Limosella aquatica L. Sp. PI. 2: (i31. IT'i^. 



Type locality: "Hal)itat in Europac septentrionalis inundatis " 



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

 America. 



Specimens exa.mixeu: Wliitc Salmon, ^'mA'.w/o//'.- Ritzville, Scindlxn/ d: LeihcKj 193. 



MIMULUS. 

 Flowers reddish or purple. 



Corolla with a very long .slender tube 1. JT ■•^uhiini fonts. 



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 . 8. M . cusiclcii. 



Stigmas 2-lipped. 



Flowers very small, aljout .5 nnn. long, pale purple 4. M . breuscri. 



Flowers large, over 2 cm. long. 



Corolla scarlet; stamens exserted 5. M. ca}di7iall<^. 



Corolla rose-purple; stamens included 6. M . Jewisii. 



Flowers yellow; stigmas 2-lipped. 



Calyx not angled, deeply 5-c!eft 7. J/, pilos'is. 



Calyx 5-angled, 5 toothed. 

 Perennials. 



Flowers solitary on scapes S. M . pr'unuloides. 



Flowering stems leafy. 



Leaves pinnately veined. 



Herbage glabrous 9. M. dentntvs. 



Herbage slim}- -viscid, nnisk-scented 10. J/, nioscluitiis. 



Leaves palmately veined. 

 Rootstocks wanting. 



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

 leaves not viscid; corolla 2 to 5 cm. 



long II. M . langsdorfii. 



Stems very slender 5 to 20 ciil high, few- 

 flowered; coj'olla 12 to 15 mm. long: 



leaves small 13. M . iiilcrophyllus. 



Rootstocks present. 



Stems 2 to 4 cm. iiigh, mostly l-flowered: 

 plants stoloniferous, densely nuittecT, 



alpine 12. .1/. alpiniis. 



Stems 10 to 20 cm. high, mostly several- 

 flowered, arising from slender matted 



rootstocks; herbage slimy-viscid 14. .]/. unjde.rus. 



Annuals. 



Corolla rather large; leaves palmately veined 15. ^1/. na.sutus. 



