231 



Fragaria. The plants were s[)aringly infcstcfl by a pink aphid 

 of the genus Macrosiphum. The "si)ur" is represented by so 

 slight a swelHng that it might fairly be said to be absent; but 

 the plant is related to C. corallorrhiza (L.) Karst., not at all to 

 C. striata Lindl. or C. vreelandii Rydb. The color of the plant 

 suggests C. ochroleuca Rydb., but the structure of the flowers is 

 quite difTerent. Possibly we have to do with a distinct species, 

 but it seems best for the present to regard it as a subspecies or 

 race only. 



y Corallorrhiza corallorrhiza coloradensis n. subsp. 



Flowering stems 15-22 cm. high, with 7 to 14 flowers; whole 

 plant pale yellowish-green, the lip whitish, but not truly white, 

 the sepals pale orange-tinted. Lower sepals long and narrow 

 (length 6.75 mm., width i mm.); upper sepals scarcely longer 

 than upper petals; upper petals 5 mm. long and 1.75 broad, 

 briefly subacute or obtuse; lateral lobes of tip small, tooth-like; 

 old capsules of last year subovate, about 6 mm. long. 



H. Miiller has given enlarged figures of the flowers of the true 

 (European) C. corallorrhiza. It has the lateral lobes of the lip 

 larger, and the throat is dotted with dark pigment. I have 

 examined numerous descriptions of C. corallorrhiza, but they are 

 mostly very imperfect, and presumably made from dry material ; 

 none, however, strictly agree with the Colorado plant, and in 

 any event the typical form of the species Is that which occurs 

 in Europe. 



A word may be added with reference to the Rocky Mountain 

 plants usually called C. maculata Raf. or C. midtiflora Nutt. 

 In 1903 I separated C. grabhami from New Mexico, and essentially 

 the same plant occurs in Colorado, as far north as the vicinity 

 of Long's Peak Inn. In 1906 Suksdorf described C. leimhachiana 

 from the northwest. Lindley had long before based a variety 

 occidentalis on Californian specimens. It is a question whether 

 all these western plants belong to a single species, and if so, 

 whether that species is distinct from the eastern one. Mr. Oakes 

 Ames (litt., June, 1913) wrote: "I have always been impressed 

 by the fact that eastern and western specimens referred to C. 

 maculata are distinguishable in the herbarium, and the difference 



