FLOWERING PLANTS AND FERNS OF ARIZONA 207 



1. Sisyrinchium arizonicum Kothr., Bot. Gaz. 2: 125. 1877. 



Oreolirion arizonicum Bicknell in Woot. and Standi., Contrib. 

 U. S. Natl. Herbarium 19: 147. 1915. 



White Mountains (Apache County), Mogollon Mesa (Coconino 

 County), Chiricahua and Huachuca Mountains (Cochise County), 

 6,000 to 9,500 feet, in coniferous woods, August, type from Willow 

 Spring, southern Apache County (Rothrock 238). New Mexico and 

 Arizona, doubtless also in northern Mexico. 



2. Sisyrinchium longipes (Bicknell) Kearney and Peebles, Wash. Acad. 



Sci. Jour. 29:474. 1939. 



Hydastylus longipes Bicknell, Torrey Bot. Club Bui. 27: 382. 

 1900. 



San Francisco Peaks (Coconino County), White Mountains (Apache 

 County), Chiricahua Mountains (Cochise County), Rincon Moun- 

 tains (Pima County), 7,500 to 9,500 feet, in springy places and open 

 pine woods, July to September, type from the San Francisco Peaks 

 (Knowlton 34). Apparently known only from Arizona. 



Varies greatly in size of the plant and in width and relative length 

 of the leaves. Large plants from the Chiricahua Mountains (Blumer 

 1402) resemble S. californicum Ker. 



3. Sisyrinchium demissum Greene, Pittonia 2: 69. 1890. 



Apache to Coconino and Yavapai Counties, 5,000 to 8,000 feet, 

 in wet meadows and springy places, June to July, type from Bill 

 Williams Mountain, Coconino County (Greene in 1889). Western 

 Kansas (?) to Arizona. 



Blue-eyed-grass. The typical form has leaves 1 to 2 mm. wide and 

 perianth not more than 10 mm. long; whereas, in var. amethystinum 

 (Bicknell) Kearney and Peebles (S. amethystinum Bicknell), the leaves 

 are commonly 3 to 4 mm. wide and the perianth up to 15 mm. long. 

 In Arizona the variety appears to be the more common and more 

 widely distributed form, ranging from the San Francisco Peaks and 

 the White Mountains to the Huachuca Mountains (Cochise County), 

 and the Rincon Mountains (Pima County) . The type of S. amethys- 

 tinum Bicknell was collected at the last-mentioned locality (Xealley 

 153). 



S. macrocarpon Bicknell, known only by the type collection at Willow Spring, 

 Apache County (Palmer 490a), is perhaps only an exceptionally large-fruited 

 variant of S. demissum, with capsules 6 to 7 mm. long, as compared with the 

 ordinary length of 4 to 5 mm. 



20. ORCHID ACE AE. Orchid family 



Perennial herbs, some of them parasitic or saprophytic and without 

 green coloring matter; flowering stems from bulbs, corms, or more or 

 less thickened roots; perianth very irregular, the 3 outer segments 

 sepallike and similar, the lowest of the 3 inner segments (lip) usually 

 very unlike and larger than the other 2, sometimes saccate or spurred ; 

 stamen or stamens united with the style in a column; pollen grains 

 coherent in 2 or more masses (pollinia), these attached at base to a 

 viscid gland and united above by elastic threads; ovary inferior; 

 capsule 3-valved; seeds minute, very numerous. 



286744"— 42 -14 



