440 MINNESOTA BOTANICAL STUDIES. 



Cypripedium reginae Walt, is remarkable, also, by reason of 

 its distribution. It is not only a native of North America but 

 has been found in the western provinces of China^ ^ i^ company 

 with C. arietinum R. Br.^^ This fact is of especial interest 

 when the antiquity of the species of the genus is considered. 



Like many of the native Orchids, C. reginae Walt, has been 

 found somewhat difficult to force.**^*^ 



Herb: Holzinger, Winona Co. ; Sandberg, Cannon Palls; Bal- 

 lard, Zumbrota; Sheldon, Waseca Co. ; Frost, Kandiyohi Co. ; 

 Sandberg, Hennepin Co.; Herrick, Minneapolis; Oestlund, Ram- 

 sey Co. ; Aiton, Nicollet Co. ; Kassube, Minneapolis; Hammorid, 

 Lake City; Aiton, Lake Itasca; Taylor, Chisago Co.; White, 

 Minnesota City. 



Cypripedium candidum Muhl. 



Flower small, labellum dull white, ovate; leaves crowded. 

 C. candidum M.vnL. Willd. Spec. 4:142. 1805. 

 Geol. Surv. N. J. 2;236. 1889; Persoon, Synop. Plant. 2:525. 1807; 



Nuttall. Gen. N. Am. PI. 2:199. 1818; Brendel. Fl. Peoriana 60. 1887; 



Mich. Fl. 138. 1892,- Bull. Chic. Acad. Sci. 2:113; Trans. Wis. Acad. 



Sci. 9:102. 1893; Lapham. Trans. Minn. State Hort. Soc. 112. 1875; 



MacMillan. Metasp. Minn. Tal. 164. 1892; Upham, W. Minn. Phan. 



142. 1884; Arthur, J. C. Fl. la. 31. 1876; Bessey and Webber, Eept. 



Bot. Neb. 109. 1890; Wood, A. Bot. and Flor. E. of Miss. 386. 1874; 



Gray, A. Man. Bot. 510. 1890; Hitchcock, A. L. Bull. la. Agric. Coll. 



50. 1887; Hitchcock, A. L. Anthoph. and Pterid. la. 519. 1891. 



A small perennial, sparingly pubescent, two and one-half to 

 three dm. high, single flowered and having a small rhizome 

 with few fibrous rootlets. The three or four crowded, erect 

 narrow, oblong lanceolate leaves are twelve to thirteen cm. 

 long, prominently seven to nine nerved, and the under side is 

 more setulose than the upper. The stem is slender, fifteen cm. 

 high, terete and well sheathed by the leaves. The peduncle, 

 seven cm. high, is slender and compressed slightly at the base 

 of the green bract. The bract is frequently four to six cm. 

 long and one and one-half cm. wide. The flower is small and 

 not showy. The sepals are two or three cm. long, narrowly 

 ovate lanceolate, greenish, the two inferior sepals incompletely 

 united into one. The petals are lanceolate, equalling the length 

 of the sepals, and longer than the labellum, greenish brown in 

 color [and slightly wavy. The lip is an obovoid sac, with a 

 small horizontal orifice, leading to the interior which is lined 



(98) Rolfe, R. A. Nat. Sci. 3 : 327. 1893. 



(99) Hemsley. W. B. Journ. Linn. Soc. 39: 300. 1893. 



(100) Paxton, Mag. Bot. «: 156. 1847. 



