FLOWERING PLANTS AND FERNS OF ARIZONA 209 



1. Cypripedium parviflorum Salisb., Linn. Soc. London Trans. 1: 77. 

 1791. 



Cypripedium calceolus L. var. pubescens (Willd.) Correll, 

 Harvard Univ. Bot. Mus. Leaflets 7: 14. 1938. 



White Mountains. Apache County (Zuck in 1907, Goodding 1122), 

 in moist soil, probably in shade, June to July. Newfoundland to 

 British Columbia, south to Georgia, Arizona, and Washington. 



It is the large-flowered form of this species, var. pubescens (Willd.) 

 Knight (C. pubescens Willd.), that occurs in Arizona. Some persons 

 who come into contact with the glandular hairs of this plant suffer 

 severely from a form of dermatitis resembling "ivy" poisoning. 



2. HABENARIA 2 " 



Roots clustered, tuberous-thickened; stems leafy; flowers small, 

 greenish or yellowish, several or many in elongate, bracted, spikelike 

 racemes; lip spreading or drooping, flat or somewhat saccate, with a 

 tubular spur at base; sacs of the solitary anther divergent. 



Plants of bogs and rich moist woods. 



Key to the species 



1. Bracts all for all but the uppermost ones) much longer than the flowers, the 

 lower bracts commonly 2 or more times as long; lip 2- or 3-toothed or lobed 

 at apex: spur saclike, much shorter than the blade of the lip; lower leaves 



commonly obovate 1. H. viridls. 



1. Bracts (except sometimes the lowest ones) much less than twice as long as the 



flowers; lip entire, linear or lanceolate: spur equaling or longer than the 



blade of the lip; leaves never obovate (2). 



2. Spur much longer than the blade of the lip (commonly 2 or 3 times as long) ; 



stems commonly tall, stout, very leafy; spikes usually dense: lip linear 



or nearly so 2. H. limosa. 



2. Spur less than twice as long as the blade of the lip (3). 



3. Spikes densely flowered; lip lanceolate, less than 5 mm. long. 



3. H. HYPERBOREA. 



3. Spikes loosely flowered: lip linear, 6 to 8 mm. long.. 4. H. sparsiflora. 



1. Habenaria viridis (L.) R. Br. in Ait. f., Hort. Kew. ed. 2, 5: 192. 



1813. 



Satyrium ciride L., Sp. PI. 944. 1753. 



Pinaleno Mountains, Graham Countv (Shreve 5254), Santa Catalina 

 Mountains, Pima County (Shrere 5416), 7,200 to 8,800 feet. New 

 Brunswick and British Columbia, south to North Carolina, New 

 Mexico, and Arizona; Europe. 



The form found in Arizona is var. bracttata (Muhl.) Gray {Haben- 

 aria bracteata R. Br., Coeloglossum bracteatum Pari.). 



2. Habenaria limosa (Lindl.) Hemsl., Biol. Cent. Amer. Bot. 3: 305. 



18S4. 



Platanthera limosa Lindl., Ann. Xat. Hist. ser. 1, 4: 381. 1840. 

 Habenaria thurberi A. Gray, Amer. Acad. Arts and Sci. Proc. 



7: 389. 1868. 

 Limnorch is th wrberi Rydb.. Torrey Bot. Club Bui. 2S: 624. 1901. 

 Limnorchis arizonica Rydb., ibid., p. 629. 



Mountains of Cochise and Pima Counties, 7,000 to 8,000 feet, rich 

 moist woods and cool springy places, July to September, type of 



-" inference: Ames, Oakes. the genus habenakia in north America. Orchidaceae, Fasc. 4. 1910. 



