LILY FAMILY 303 



Inner perianth-segments without auricles or scales; flowers solitary or racemose 



1. E. purpurascens. 

 Inner perianth-segments with auricles and a median pair of sacs, each joined laterally to the 



auricle by a narrow ridge or saccate process. 

 Scape bearing a solitary flower or when several the pedicels often very long or unequal. ' 



Flowers purple; pedicels often very unequal, half to as long as the scape 



2. E. hendersonii. 

 Flowers mostly cream, yellow or pink. 



Filaments filiform or very narrowly dilated. 



Style and stigma entire . 3. E. eitrinum. 



Style 3-cleft or 3-lobed at apex. 



Leaves bright solid green _ 4. E. grandiflorum. 



Leaves strongly mottled 5. E. californicum. 



Filaments ovately scarious-winged 6. E. revolutum. 



Scape none, the flowers 1 to 5 in an umbel sessile between the leaves, each flower thus raised 

 on a scape-like pedicel ;.*. _ 7. E. hartwegii. 



1. E. purpurascens Wats. Three to 6 (or 16) inches high, the scape bearing 

 1 to 8 flowers in a raceme, the flowers commonly approximate, rarely with very 

 unequal pedicels and umbellate; leaves not mottled, undulate-margined, dark 

 metallic green ; flowers light yellow, tinged purple after a few days, the linear 

 segments 7 to 8 lines long, only slightly recurved ; filaments filiform ; style clavate, 

 shorter than the stamens, its stigma obscurely lobed. 



Sierra Nevada, Mt. Lassen to Tulare Co., brushy or forested slopes, 4000 to 

 8000 feet. Rare south of Plumas Co. June-July. 



Loes. Hot Springs Valley near Lassen Peak, Jepson 4079 (lower part of petals sulphur 

 yellow, the upper part pure white and fading pink); Big Mdws., Plumas Co., B. M. Austin; 

 Cisco, ace. Purdy; Mt. Moses, Purpus. 



Kefs. EBYTHRONIUM PURPURASCENS Wats. Proc. Am. Acad. 12:277 (1877). E. grandi- 

 florum var. multiflorum Torr. Pac. R. Rep. 4:146 (1857), type loc. Downieville, Bigelow. 

 E. purpurascens var. uniflorum Wats. Bot. Cal. 2:171 (1880), resting on E. grandiflorum Torr. 

 Pac. E. Rep. 4:145 (1857), type loe. Forest City near Downieville, Bigelow. 



2. E. hendersonii Wats. Seven to 12 inches high, 1-flowered or with 2 to 4 

 flowers on pedicels half to as long as the scape ; leaves mottled, long-oblong, obtuse 

 or obtusish, or tapering from the middle upward ; perianth purple, the segments 

 very revolute, I 1 /! to 1% inches long, the base of segments with a median pair 

 of inflated or bulbous sacs, each connected w r ith the auricles by a small sac or 

 papilla ; stigma 3-lobed. 



Siskiyou Co. North to southwestern Oregon. 

 Locs. Quartz Valley, Butler. Grants Pass, Ore., M. S. Baker. 



Ref. ERYTHRONIUM HENDERSONII Wats. Proc. Am. Acad. 22:479 (1887), based on Oregon 

 spms. (Ashland, Henderson, and Grants Pass, Howell). 



3. E. citrinum Wats. Scape 1 to 3-flowered, 5 to 11 inches high; leaves 

 "mottled," but not obviously so in our material, oblong, obtuse or acute, more 

 or less undulate, 3 to 6 or 10 inches long ; flowers lemon-yellow, the oblong acumi- 

 nate segments 1 to 1^4 inches long; inner perianth-segments bearing at base a 

 median pair of saccate protuberances, each joined laterally by a smaller sac or 

 process to the auricle ; style clavate at apex ; style and stigma quite entire. 



Open pine woods, central Sierra Nevada and southwestern Oregon. Apr. 



Tax. Note. Watson describes the appendages as "scales," but in dried specimens these 

 ' ' scales ' ' of the delicate perianth-segments are portions of the formerly open sacs flattened by 

 pressure. 



Locs. Italian Bar, Tuolumne Co., Fred Grant; Yankee Hill, Jepson 6407. 



Ref. ERYTHRONIUM CITRINUM Wats. Proc. Am. Acad. 22:480 (1887), type loc. Deer Creek 

 Mts., Josephine Co., Ore., Howell. 



4. E. grandiflorum Pursh var. parviflorum Wats. Scape 1 to 2 or 5-flowered ; 

 leaves bright green, without spots ; flowers egg-yelloW, at higher altitudes lemon- 

 yellow ; inner perianth-segments auricled and with 4 equal sacs at base, the sacs 

 ridged, wrinkled or flattened and not very distinct from each other ; style 3-cleft 

 at apex or merely 3-lobed. 



