FLOWERING PLANTS AND FERNS OF ARIZONA 211 



1. Spiranthes parasitica A. Rich, and Gal., Ann. Sci. Nat. II Bot. 



ser. 3, 3: 32. 1845. 

 Marshall Gulch, Santa Catalina Mountains, Pima County (Thorn- 

 ber and Lloyd 4196), June. Southern Arizona and Mexico. 



2. Spiranthes romanzoffiana Cham., Linnaea 3: 32. 1828. 

 Kaibab Plateau near the Grand Canyon National Park, Coconino 



County (Kearney and Peebles 13719), Baldy Peak, Apache County 

 (Peebles and Smith 12496), Pinaleno Mountains, Graham County 

 (Shreve 5374), 8,500 to 9,500 feet, in bogs, August and September. 

 Newfoundland to Alaska, south to New York, New Mexico, Arizona, 

 and California. 



3. Spiranthes michuacana (La Llave and Lex.) Hemsl., Biol. Cent. 



Amer. Bot. 3: 301. 1884. 



Neottia michuacana La Llave and Lex., Nov. Veg. Descr. 2: 

 Orchid, Op. 3. 1825. 



Rucker Valley or Huachuca Mountains, Cochise County (Lemmon 

 477), September. Southeastern Arizona and Mexico. 



The floral bracts are remarkably large, attaining a length of 3 cm. 



5. LISTERA. Twayblade 



Small plants with fibrous roots and a pair of nearly opposite, broadly 

 ovate leaves ; flowers inconspicuous, greenish yellow, in a short raceme; 

 lip wedge-shaped, broadest at apex, slightly toothed or angled on 

 each side at base. 



1. Listera convallarioides (Swartz) Ton., Compend. 320. 1826. 



Epipactis convallarioides Swartz, K. Vetensk. Acad. Handl. 



ser. 2, 21: 232. 1800. 

 Ophrys convallarioides W. F. Wight, Torrey Bot. Club Bui. 



32: 380. 1905. 



Santa Catalina Mountains, Pima County (Peebles and Loomis 

 2253a), about 8,000 feet, July. Newfoundland to Alaska, south to 

 New England, Arizona, and California. 



6. GOODYERA. Rattlesnake-plantain 



Flowering stems scapose, from a cluster of thickened roots ; foliage 

 leaves in a basal rosette, somewhat fleshy, mottled or striped with 

 white; inflorescence a somewhat 1 -sided, bracted spike; flowers small, 

 whitish; upper sepal united with the petals, forming a galea; column 

 ending in a 2-forked beak. 



1. Goodyera decipiens (Hook.) F. T. Hubbard in Olmsted, Coville, 

 and Kelsey, Stand. PL Names, 328. 1923. 



Spiranthes decipiens Hook., Fl. Bor. Amer. 2: 203. 1839. 

 Peramium decipiens Piper, Contrib. U. S. Nat. Herbarium 11: 

 208. 1906. 

 Kaibab Plateau and Bill Williams Mountain (Coeonino County), 

 White Mountains (Greenlee County), Pinaleno Mountains (Graham 

 County), 8,000 to 9,500 feet, rich woods, July and August. Nova 

 Scotia to Alaska south to New Hampshire, New Mexico, Arizona, 

 and California. 



