LljVINORCHIS AND PiPERIA NORTH OF MeXICO 



623 



Iwrca y var. dilatata KraenzHn, Orch. Gen. ct Sp. 640, in part. 



1899. 



Stem slender, tall, leafy, 3-6 dm. 

 high : leaves lanceolate, 7-20 cm. long, 

 the lower obtuse, the upper acute : 

 spike 5-25 cm. long, usually rather 

 lax ; bracts linear-lanceolate, the lower 

 twice as long as the flowers : flowers 

 white, 15-18 mm. long: upper sepal 

 ovate, obtuse, about 6 mm. long, the 

 lateral ones lanceolate, acutish : petals 

 acute, lanceolate ; lip lanceolate with 



a rhomboid base, about 7 mm. long ; spur longer than the lip, 

 filiform, scarcely at all clavatc. (Fig. 12.) 



L. dilatata is common from Newfoundland to Saskatchewan, 



south to New York and Nebraska. 



Type : " In Labrador. Co/inastcr, v. s. in Herb. Dirkson.'' 



Limnorchis dilatata linearifolia var. nov. 



Stem slender; leaves linear,' attenuate, 5-10 cm. long, 5-7 mm. 

 wide. 



Very different from the species in general habit, but the flowers 

 are exactly the same, and intermediate forms are not lacking. 



New York : Bridgewater, Dr. Gray (type in herb. Torrey). 



Michigan : Portage of Kee-w\ana-wa, Dr. Peters. 



13. Limnorchis fragrans Rydb. ; Britton, Man. Fl. N. States, 



294. 1 901 



Stem slender, 2-3 dm. high : tubers narrowly fusiform, about 

 5 mm. thick : leaves linear, about i dm. long and 8-10 mm. wide, 



acute : spike slender, lax ; bracts lanceo- 

 late, acuminate ; the lower longer than the 

 flowers : flowers pure white, very fragrant : 

 upper sepal ovate-lanceolate, obtuse ; the 

 lateral ones linear-lanceolate, acutish, 

 strongly veined : petals narrowly linear- 

 lanceolate, equalling the sepals ; lip lanceo- 

 late with an ovate-rhomboid base, about 5 

 mm. long ; spur filiform, not at all clavate, 

 curved, slightly exceeding lip. (Fig. 13.) 

 Closely resembling the variety of preceding species, it is dis- 

 tinguished by the narrow petals and sepals and by the fragrance. 



