384 



LILIACEAE 



7. Allium madidum S. Wats. Swamp Onion. Fig. 935. 



AUium madidum S. Wats. Proc. Am. Acad. 14: 228. 1879. 



Bulb ovoid, 10-15 mm. long, the outer coats without 

 definite reticulations, the inner white. Scape rather stout, 

 slightly angled, 10-20 cm. high ; leaves 2, thick and chan- 

 nelled, 7-12 cm. long, 3-6 mm. wide ; bracts 2, ovate to 

 lanceolate, acute 8-10 mm. long; umbel usually many- 

 flowered; pedicels 8-12 mm. long; perianth-segments white 

 or pale rose, ovate-oblong, acute, 8 mm. long; stamens 

 almost equalling the segments ; style exceeding the seg- 

 ments; ovary with 2 fleshy ridges at the summit of each 

 cell. 



In wet places, Arid Transition and Canadian Zones; Blue Moun- 

 tains, eastern Oregon. Type locality: Union County, Oregon, "in 

 small streams or wet places on high ground." 



8. Allium tribracteatum Torr. Three-bracted Onion. 



Allium tribracteatum Torr. Pacif. R. Rep. 4: 148. 1857. 

 Allium ambiguum- M. E. Jones, Contr. West. Bot. 8: 18. 1902. 



Bulb ovoid, 15-20 mm. long, the coats thin, with distinct 

 transversely oblong reticulations. Scapes 3-6 cm. high ; 

 leaves about twice as long as the scape, 2-3 mm. wide; 

 bracts 2 or 3, abruptly acuminate ; umbels many-flowered ; 

 pedicels 4-6 mm. long; perianth-segments pale rose with a 

 prominent dark greenish midvein, 6 mm. long, narrowly 

 oblong-lanceolate, acutish, not gibbous at base ; stamens two- 

 thirds to nearly as long as the perianth ; anthers purple ; cap- 

 sule crested with three pairs of low dorsal ridges. 



Dry rocky ridges. Arid Transition and Canadian Zones; southern 

 Oregon, south in the Sierra Nevada to Mono County. Type locality: 

 Duffield's Ranch, Sierra Nevada, California. 



Fig. 936. 



9. Allium parvum Kell. Dwarf Onion. Fig. 937. 



Allium parvtim Kell. Proc. Calif. Acad. 3: 54. 1863. 



Alliitm tribracteatum andcrsoui S. Wats. Bot. King E.xpl. 353. 1871. 



Bulb ovoid, about 15 mm. long, the coats without definite 

 reticulations. Scape 3-5 mm. high, one-half to two-thirds under 

 ground, terete; leaves 2, about twice as long as the scape, 2-3 

 mm. wide; bracts 2, round-ovate, very obtuse or rounded at 

 apex, with or without a very short acumination ; umbel 8-20- 

 flowered ; pedicels 5-8 mm. long ; perianth rose-purple, turbinate 

 at base, not at all gibbous, the segments with a prominent 

 dark midvein, narrowly oblong-lanceolate, obtuse. 6-8 mrn. 

 long, erect; stamens about two-thirds the length of the peri- 

 anth-segments, the filaments slightly dilated below; capsule 

 obscurely crested. 



Stony soil. Arid Transition Zone; Sierra Nevada, from Lassen Peak, 

 Shasta County, to the Kern River, also in the Washoe Mountains, western 

 Nevada. Type locality: Washoe, Nevada. 



