394 



LILIACEAE 



37. Allium amplectens Torr. Narrow-leaved Onion. 



Fig. 965. 



AUium amplcctois Torr. Pacif. R. Rep. 4: 148. 1856. 

 AUiiiiu attciriiifolhim Kell. Proc. Calif. Acad. 2: 110. 1863. 

 AUiiiin occidcntalc A. Gray, Proc. Am. Acad. 7: 390. 1867. 

 Allium acuminatum gracile Wood, Proc. Acad. Philad. 1868: 171. 



1868. 

 A/liuiii monospermum Tepson; Greene, Man. Bav-Region 321. 



1894. 



Bulb ovoid, 15 mm. long, the coats reddish, the 

 reticulations of transverse linear V-shaped meshes often 

 appearing in perpendicular rows, or sometimes more 

 irregular. Scapes 15-45 cm. high, slender, terete; 

 leaves 2-A, shorter than the scape, narrow, becoming 

 convolute-tiliform above the sheathing base ; bracts 2, 

 scarcely 1 cm. long, broadly ovate, rounded at the apex 

 and mucronate ; umbel dense, almost capitate ; pedicels 

 6-15 mm. long; perianth-segments white or tinged with 

 pink, oblong-lanceolate, acuminate, 6-8 mm. long, be- 

 coming lax in age ; stamens scarcely shorter than the 

 perianth-segments ; capsule distinctly 6-crested. 



Open fields and hillsides, mainly Upper Sonoran Zone; Klicki- 

 tat County, Washington, to San Diego County, California. Type 

 locality: "hillsides, Sonoma, California." 



38. Allium dichlamydeum Greene. 

 Coastal Onion. Fig". 966. 



Allium dichlamydeum Greene, Pittonia 1: 166. 1888. 



Bulb round ovoid, scarcely 1.5 cm. long, the 

 coats gray-brown, with close conspicuous trans- 

 verse serrate reticulations, becoming fissile when 

 dry. Scape 2-3 dm. high, terete ; bracts 2, ovate- 

 lanceolate, about 15 mm. long; umbels open, 

 6-20-flowered ; pedicels stout, spreading, 15-20 

 mm. long; perianth deep rose-purple, 10 mm. 

 long, the outer segments broadly oblong-ovate, 

 abruptly acute, somewhat spreading, the inner 

 segments narrowly oblong, erect ; stamens two- 

 thirds the length of the perianth segments, the 

 filaments deltiod and united at base ; capsule 

 with narrow central crests at the base of the 

 style. 



Open fields and hillsides, Transition and Upper So- 

 noran Zones; outer Coast Ranges of central California, 

 from Mendocino to Monterey Counties. Type locality: 

 seaward slopes of the Mission Hills, and at the Marine 

 Hospital, San Francisco. 



39. Allium serratum S. Wats. 



Serrated Onion. Fig. 967. 



Allium serratum S. Wats. Bot. King Expl. 487. 1871. 



Bulb round-ovoid, scarcely over 1 cm. long, the coats 

 gray-brown, distinctly marked with close transverse ser- 

 rate reticulations, readily fissile when dry. Scape 2-3 dm. 

 high, terete; leaves 2-A, shorter than the scape. 1.5-3 mm. 

 wide; bracts 2, ovate-lanceolate, 10-15 mm. long, acum- 

 inate ; umbels congested and sulicapitate, many-flowered ; 

 pedicels very slender. 8-15 mm. long; perianth rose-pink, 

 8 mm. long, the outer segments ovate-lanceolate, the 

 acuminate apex usually slightly spreading, the inner seg- 

 ments narrower ; stamens scarcely two-thirds the length 

 of the segments, the broadly dilated bases united ; capsule 

 with narrow central crests at the base of the style. 



Usually in heavy soil on serpentine outcrops, valleys and foot- 

 hills of the inner Coast Ranges of central California, from Solano 

 to Santa Clara County. Ui)i)er Sonoran Zone. Type locality: 

 California. Collected l)y Douglas. 



