PIPER FLORA OF THE STATE OF WASHINGTON. ' 301 



Specimens examined: Clallam Couiitv, Elmer 2(j9(); Muutit Adams, Siik-sdorf, Scptum- 

 bor, 1877; Mount Stuart, Brandegee 641; Elmer 1095. 

 Zonal distribution: Arctic. 



SmeloAVskia ovalis Jones, Proc. Cal. Atad. II. 5: ()24. 1895. 



Type locality: Mount Adams, Washington. 



Range: Washington to California. 



Specimens examined: Olympic Mountains, J. M . Grant in 1889; Mount Adams, Hen- 

 derson, August, 1892; Mount Rainier, Piper 2063; James Bryce in 1883; Allen 61. 



Zonal distribution: Arctic. 



BRASSICA. 



Cauline leaves auricled at base and clasping 1.5. campestris. 



Cauline leaves not auricled or clasping. 



Beak of the pod very short, less than one-fourth the fertile portion . 2. B. nigra. 



Beak of the pod long, about equaling the fertile portion 3. B. arvensis. 



1. Brassica campestris L. Sp. PI. 2: 606. 17.53. Turnip. 

 Type locality: P^uropean. 



Specimens examined: Spangle, Piper, June, 1899; Waitsburg, Ilorrter 73; Pullman^ 

 Ilardiricl', July, 1895. 



2. Brassica nigra (L.) Koch in Roehl. Deutschl. Fl. ed. 3. 4: 713. 1833. 



Black mustard. 

 Sinapis nigra L. Sp. PI. 2: 668. 1753. 

 Type locality: European. 

 Speclmens examined: Pullman, Pi/x/' 4113; without locality, raw;/ in 1889. 



3. Brassica arvensis (L.) B. S. P. Prel. Cat. N. Y. 5. 1888. Charlock. 

 Sinapis arvensis L. Sp. PI. 2: 668. 1753. 



Brassica sinapistrum Boiss. Voy. Espagnc 2: 39. 183{>-45. 

 Type locality: "Habitat in agris Europae." 



Specimens examined: Seattle, Piper, June, 1891; Pullman, Piper, August, 1893; 

 Meyers Falls, Kreager 514. 



SISYMBRIUM. 



Pubescence of simple hairs or none; leaves pinnalifid. 



Pods subulate, appressed, 1 to 1 .5 cm. long I. S. officinale. 



Pods linear, spreading, 5 to 10 cm. long 2. S. altissimum. 



Pubescence of branched hairs. 



Flowers white ; leaves mainly in a basal rosette 'S. S. thaliamtrn. 



Flowers yellow ; branches leafy. 



Seeds biseriate in each cell 4.5. cane.>icens. 



Seeds uniseriate in each cell. 



Leaves tripinnate; herbage canescent 5. S. sophia. 



Leaves pinnatifid or bipinnatifid, subglabrous. 

 Capsules 10 to 14 mm. long, spreading. 



Pedicels 4 to 6 mm. long, shorter than the 



capsules 6.5'. incisuryi. 



Pedicels 10 to 20 mm. long, longer than the 



capsules 6a. 5'. incisum filipes. 



Capsules 3 to 6 mm. long on subequal ascending 



pedicels 7 ■ S. hnrtvegianum. 



1. Sisymbrium officinale (L.) Scop. Fl. Carn. ed. 2. 2: 26. 1772. Hedge mustard. 

 Erysimum officinale L. Sp. PI. 2: 660. 1753. 

 Type locality: European. 

 Speclmens examined: Pullman, Ilnrdvirk, August, 1895. 



