434 MINNESOTA BOTANICAL STUDIES. 



It is not ranked as a distinct species by Hooker who has given 

 it the following name, Cypripedium f asciculatum Kell. , var. 

 pusillum Hook. He even questions the existence of this spe- 

 cies in Florida, although acknowledging it as an American 

 plant. The leaves of C. pusillum Rolfe, are thicker than those 

 of C. f asciculatum Wats.,*'^ the nerves are obscure, and the 

 flowers are fragrant. The other parts are not clearly distin- 

 guished. Both species are members of the two-leaved section 

 butC. fasciculatum Wats., bears more than one flower. This was 

 discovered in Washington in 1880, by W. N. Suksdorff, « ^ and 

 has since been found in California. - Another closely related 

 species is Cypripedium guttatum Sw. , " " which ranges through 

 Alaska to Fort Franklin. ^ '^ It is one of the few species found 

 in more than one continent, since it is a native of Alaska, north- 

 ern Canada, Europe "^ and northern Asia.''^ 



Cypripedium irapeanam is the representative which binds 

 the two main divisions on the south and, as C. molle Lindl., is 

 given a range from New Mexico to Santa Maria '^ and as far 

 down as Panama.'' ^ In general appearance it approaches most 

 nearly to Cypripedium reginae Walt., and is frequently found 

 with three or four flowers. ' ^ 



Cypripedium californicum Dougl. '^ ^ is a more slender form 

 than the previous one. From three to twelve flowers are pro- 

 duced in a simple raceme,''^ all emerging from the axils of 

 leafy bracts. The sepals are pale, brownish yellow and the 

 lip is obovoid globose, white with a little pink on the inverted 

 edges and obscurely spotted with brown. The staminodium 

 is sub-sessile, broader than long, uniformly obcordate and 

 rather longer than the small quadrate stigma. ' ^ It is found in 

 California, and Oregon, and probably in the adjoining states. 



Cypripedium passerinum Rich. '^ " is single flowered and ac- 

 cording to Hooker much resembles C. californicum Dougl. The 

 principal point of difference is found in the oblong staminodium 

 of C. passerinum Rich. This species was collected, fifty years 



(64) Watson. S. Proc. Am. Acad. 17 : 380. 1882. 



(65) Hooker, J. D. Curt. Bot. Mag. 119: 7275. 1893. 



(66) Rothrock. J. D. Fl. Alaska, 456. 1867. 



(67) Macoun J. Cat. Can. PL 3:20. 1888. 



(68) Ledebour. Fl. Rossica, 4 : 86. 1853. 



(69) De Puydt. Botan. Jaliresb. 8: 814. 1883. 



(70) Bentham, G. Plant. Hartweg, 72. 1839. 



(71) Hemsley, W. B. Biolog. Cent. Am. 245. 1888. 



(72) Watson, S. Proc. Am. Acad. 18: 159. 1882. 



(73) Gray. A. Proc. Am. Acad. 7 : 389. 1867. 



(74) Watson. S. Geol. Surv. Cal. Bot. »: 484. 1880. 



(75) Hooker, J. D. Curt. Bot. Mag. 117 : 7188. 1891. 



(76) Hooker, J. D. Loc. cit. 



