120 FLORA OF WASHINGTON AND VICINITY. 



t Calopogon pulchellus, U. Br. Grass Pink. 

 Holmead Swamp. Middle of Juue. 



Tipularia discolor, Nutt. Crane-Fly Orchis. 



Last week in August ; leaves best collected in February or March. 



H\4icrostylis ophioglossoides, Nutt. Adder's-Mouth. 



Carroll Estate, very rare. Only collected in fruit in September and October. 

 Probably flowers in July. 



+ Liparis liliifolia, Richard. Twayblade. 

 Last of May. 



Liparis Loeselii, Richard. Green Twayblade. 



Woodley. Found in small quantities in 1877 by Mr. M. B. W. Hough ; now ap- 

 parently obliterated. First week in June. 



t Corallorhiza odontorhiza, Nutt. Coral-root. 

 First of October. 



Corallorhiza multiflora, Nutt. 



Carroll Estate, rare ; only once found, in fruit, October 18, 1874. 



t Aplectrum hyemale, Nutt. Putty-Root. Adam-and-Eve. 

 First half of June ; leaves best in March. 



tCypripedium parviflorum, Salisb. Small Yellow Moccasin Flower or Lady's 

 Slipper. 

 Three miles above Langley, Va., near the Potomac, in a ravine called Dead Run 

 (Dr. G. W. Hill, May 15, 1881). Intermediate forms connecting this with the next 

 have been met with in Woodley Park, also at Broadwater. 



tCypripedium pubescens, Willd. Large Yellow Moccasin Flower or Lady's 

 Slipper. 

 Woodley ; Corcoran's Woods. Not common. May. 



t Cypripedium acaule. Ait. Stemless Moccasin Flower or Lady's Slipper. 

 First half of May. 



AMARYLLIDACEiE. 



Amaryllis Family. 



tHypoxys erecta, L. Star-grass. 



Said to fruit sparingly,* but my specimens generally show well-developed capsules 

 and seeds. June. 



HiEMODORACE^. 



Bloodwort Family. 



T Aletris farinosa, L. Colic-Root. 



Abundant at Falls Church (Professor Chickering); Reform School (rare). May., 

 June. 



IRIDACEiE. 



Iris Family. 

 Iris versicolor, L. Blue Flag. 

 May. 



