202 CONTRIBUTIONS FROM THE NATIONAL TIERBAPJUM. 



Pass, Samlherg c£' Leiherg 737 ; near Skagit Pass, Lal'e cf • Ihill 615; Lake Wenache, Sandherg 

 <& LeAherg 646; Blue Mountains, Piper, July, 1896; without locality, Vasey 104; Mount 

 Carlton, Kreager 254, 191. 



Zonal distributiox: Transition. 



2. Streptopus roseus Michx. Fl. 1: 201. 1803. 



Streptopus curvipes Vail, Bull. Torr. Club. 28: 267. 1901. 



Type locality: "Ilab. in excelsis montibus Carolinae septontrionalis ot in Canada." 



Range: Alaska to Oregon, Labrador, and Georgia. 



Specimen.s examined: Cascade Mountains, latitude 49°, Lyall in 18.59; Lake Cushman, 

 Piper in 1890; Goat Mountains, Allen, August 12, 1895; Silvorton, Bovck 183; Skamania 

 OouQiyjSriksdorf, August 10,1886; Mount Adams, ^wZr.sdorf 44; Stampede Pass, //f?ir?erso«., 

 April 10, 1892; Stevens Pass, Whited 1460; Simcoe Mountains, ffoM;efi in 1879; Nason City, 

 Sandherg & Leiherg 652. 



Zonal DISTRIBUTION : Humid Transition. 



The western form of this species is commonly smaller than that of the eastern States, 

 and shows a tendency to produce longer rhizomes, but we believe these differences are not 

 specific, especially as rhizomatous forms occur also in the Allegheny Mountains. 



KRUHSEA. 



1. Kruhsea streptopoides (Ledeb.) Kearney in Herron,Explor. in Alaska, Adj. Gen. Ofl". 

 31: 74. 1901. 

 Smilacina streptopoides Ledeb. Fl. Ross. 4: 128. 1853. 

 Kruhsea tilingiana Regel, Nouv. Mem. vSoc. Nat. Mosc. 11: 122. 18.59. 

 Streptopus hreinpes Baker, Journ. Linn. Soc. 14: 592. 1875. 

 Ty'pe locality: "Ilab. in Siberia orientali pr. Ajan! inqu(^ insula Sitka." 

 Range: Alaska to Washington. Siberia. 



Specimens examined: Cacsade Mountains, latitude 49°, LgaU in 1859. 

 Zonal distribution: Canadian. 



ASPARAGUS. 



1. Asparagus officinalis L. Sp. PI. 1: 313. 1753. Asparagus. 



The cultivated asparagus (juickly escapes from cultivation and becomes more or less 

 establislied. This is especially true in somewluvt alkaline lands in the Yakima ^"allev. 



IRIDACEAE. This Family. 



Flowers very large; styles petal-like Iris (p. 202). 



Flowers moderate; styles filiform. 



Filaments united to the top; flowers usually blue Sisyrinchium (p. 203). 



Filaments united only at base; flowers never blue. 



Flowers yellow; styles cleft to the middle Hydastylus (p. 204). 



Flowers red : styles cleft near the top Olsynium (p. 204). 



IRIS. 



Stems leafy ; brads green, not scarious 2. /. tcna.r. 



Stcnns leafless; bracts largely .scarious 1. /. :riissoiniens)s. 



1. Iris missouriensis Xutt. Journ. Acad. Phila. 7: .58. 1834. PL.vrE XXL 



Iris toliincana Herbert, Bot. Beech. Voy. 396. 1839. 



Ir'is raitrina Herbert; Hook. Fl. Bor. Am. 2: 206. 1839 (November). 



Type locality: "Towards the sources of the Missouri." Collected by Wyeth. 



Range: British Columbia to Dakota, Arizona, and California. 



Specimens examined: vVhidby Island, Gardner 278, 426; Ellensburg, Whited, May, 

 1897; Yakima, Leckenby, May, 1898; North Yakima, Henderson, May, 1892; Prosser 



