IRIS FAMILY 325 



Nevada. Oregon. May-June. The color of the flowers is exceedingly variable, 

 but the species may be known from the next by its longer pedicels, shorter 

 perianth-tube and stouter habit. 



Locs. Little Sur River, Davy 7310; Monterey, Berg; Anchorage, Santa Cruz Mts., Carlotta 

 Case; Los Gatos, Heller 7305; Half moon Bay, Geo. B. Furniss (=var. altissima Purdy in litt. ; 

 3 to %V feet high); Millbrae, San Mateo Co., Davy 1021; Lake Merced, San Francisco, 

 E. Cameron; Mt. Tamalpais, Jepson 7562; Inverness, Jepson 8303; Cazadero, M. S. BaTcer; 

 Ukiah, Bolander 3909; Sherwood, Jepson; Cahto, Mendocino Co., Jepson; South Fork Eel 

 River near Idolwild, Jepson 1909; Buck Mt., Humboldt Co., Tracy 4263; Auburn, Placer Co., 

 Sonne. 



Refs. IRIS DOUGLASIANA Herbert; H. & A. Bot. Beech. 395 (1841), type from Cal., 

 Douglas; Jepson, Fl. W. Mid. Cal. 129 (1901); Dykes; Genus Iris 36, pi. 8 (1913). /. wat- 

 soniana Purdy, Erythea, 5:128 (1897), type loc. Eureka, Purdy. I. amabilis Eastw. Bull. Torr. 

 Club 30:484 (1903), type loc. Nevada City, C. W. Kitis. I. tenuissima Dykes, I.e. 44, type 

 loc. Pitt River Ferry, Shasta Co., Brown 239. 



4. I. macrosiphon Torr. GROUND IRIS. Stems low and slender, nearly naked 

 or commonly clothed with bract-like leaves, much shorter than the basal leaves 

 which are 5 to 12 (or rarely 27) inches long and 1 to 2 lines broad ; bracts lanceo- 

 late, long acuminate, 2 1 /2 to S 1 /^ inches long; flowers 1 or 2, on pedicels 6 to 7 

 lines long, with slender tube 1% to 3 inches long ; perianth violet-purple or straw- 

 yellow, generally veined or mottled ; sepals oblong-obovate or obovate, their lower 

 or middle portion blotched or veined with white, the margin above often undu- 

 late ; petals oblanceolate, of a uniform color, 1^ to 2~y inches long; capsule short- 

 oblong, % to li/4 inches long ; seeds roughly angled. 



Brushy slopes; 100 to 3000 feet, Coast Ranges from Santa Clara Co. north 

 to Del Norte Co. ; thence southeasterly to Butte Co. Also southern Oregon. 



Locs. Gilroy, C. F. Baker 1947; Mt. Hamilton, Jepson 4202; Ross Valley, Jepson; Olema, 

 Marin Co., Jepson; Howell Mt., Jepson 516; Vaca Mts., Jepson 7192 (Weldon Canon), 2456 

 (Wild Horse Canon); Lakeport, C. F. BaTcer 3095; Hoods Peak Range, east of St. Helena, 

 Jepson ; grade betw. Blue Lakes and Ukiah, Jepson ; Sherwood Valley, Davy $ Blasdale 1061 ; 

 Little Laribee Creek, Humboldt Co., Tracy 2684; Hupa, Manning; Klamath River, Humboldt 

 Co., Chandler 1529; Adam Sta. to Patrick Creek, Del Norte Co., Jepson 2908; Marble Mt., 

 Cliandler 1570; Mt. Shasta, F. W. Morse; Little Chico Creek, R. M. Austin 13; Penn Valley, 

 Xevada Co., Jepson. 



Var. purely! Jepson n. comb. Stem clothed with many bract-like leaves; perianth cream- 

 color veined with purple. Redwood region of Mendocino Co. 



Refs. IRIS MACROSIPHON Torr. Pac. R. Rep. 4:144 (1857), type loc. Corte Madera, Bige- 

 low; Jepson, Fl. W. Mid. Cal. 129 (1901) ; Dykes, Genus Iris 43, pi. 12 (1913). I. chrysophylla 

 Howell, Fl. N.W. Am. 1:633 (1897), type loe. southern Oregon, pine woods. Var. PURDYI 

 Jepson. I. purdyi Eastw. Proc. Cal. Acad. ser. 3, 1:78, pi. 7, fig. 2 (1897), type loe. Mendo- 

 cino Range near Ukiah, Purdy; Dykes, Genus Iris 42, pi. 11 (1913). 



5. I. hartwegii Baker. SIERRA IRIS. Stems many, very leafy, 6 to 12 inches 

 high ; leaves !/4 inch wide or less ; flowers commonly in pairs ; pedicels 1/2 to 3% 

 inches long, partly enfolded in the long lanceolate-acuminate bracts, which are 

 borne more or less separate from each other ; petals yellow with lavender veins 

 or pale lavender with deeper-colored veins and a yellow median portion; tube 

 3 to 5 lines long ; sepals and petals I 3 /? to 21/2 inches long ; capsule short-oblong, 

 obtusely angled, % to 1 inch long; seeds coarsely wrinkled, cubical. 



Dry open forest, 2500 to 6000 feet : western slope of the Sierra Nevada from 

 Plumas Co. to Kern Co. ; southerly to cismontane Southern California. Very 

 like Iris tenax Dougl. of Oregon and Washington save in color. 



Locs. McCloud Valley, M. S. Baiter; Quincy, Jepson 4144 ; Stirling, Butte Co., Heller 10803 ; 

 Jackson, Han-sen 50; Strawberry, Tuolumne Co., Jepson 6522; Italian Bar, Tuolumne Co., 

 Jepson 6356; El Portal, Jepson 3123a; Grouse Creek, Wawona Road, Jepson 8382; Dinkey 

 Grove, Fresno Co., A. L. Grant; Colony Mill, Kaweah, Hopping 16: North Tule River, Purpus 

 5684; San Bernardino Mts., Parish 3084 (Grass Valley), 2466 (Strawberry Peak). 



Refs. IRIS HARTWEGII Baker, Gard. Chron. 2:323 (1876), type loc. Bear Creek, Nevada 

 Co., Hartweg 373; Dykes, Genus Iris, 40, pi. 10 (1913). Var. australis Parish, Erythea 6:83 

 (1898), type loc. Cuyamaca, Hall. 



