ORCHIDACEAE 97 



18. LEPTORCHIS Thouars. 



Petals linear : lip 2.5-3.5 ram. broad : capsules oblong-. i. L. Loe$elii. 



Petals filiform or linear-filiform : lip 9-12 mm. broad : capsules clavate-oblongr, 



2. L. liliifolia. 



1. Leptorchis Loeselii(L. ) MacM. LoESEt's Twayblade. (Man. p. 

 303 ; I. F./. 1137.) In wet thickets, N. S. to the N. W. Terr., Ala. and Mo. 

 — Pennsylvania : Monroe ; Berks, near Reading ; Erie, Presque Isle ; 

 Chester ; Bucks. 



2. Leptorchis liliifolia (L.) Kuntze. Large TwaybladE. (Man. p, 

 303 ; I. F.y. 1136.) In moist woods and thickets, Me. to Minn., Ga. and 

 Mo. — Pennsylvania: Northampton; Bucks; Philadelphia; Ches- 

 ter ; Lancaster ; Monroe ; Luzerne ; Mifflin ; Delaware ; Alle- 

 gheny. 



19. CORALLORHIZA R.Br. 



Lip not 3-lobed, but often erose or finely toothed. 

 Lip not notched, clawless : perianth 6-8 mm. long : column narrowly winged. 



1. C. odonlorhiza. 

 Lip notched, clawed : perianth 12-14 mm. long : column strongly winged. 



2. C. iVtsteriana. 

 Lip 3-lobed, the lateral lobes spreading or directed forward. 



Spur obsolete : lip shallowly 3-lobed : capsules 8-10 mm. long. 



3. C. Corallorhiza. 

 Spur prominent : lip deeply 3-lobed : capsules 12-20 mm. long. 



4. C. inulliflora. 



1. Corallorhiza odontorhiza (Willd.) Nutt. Small- FLOWERED 

 Coral-root. (Man. p. 305 ; I. F. f. 1140.) In woods, Mass. to Mich., 

 Fla. and Mo. — Pennsylvania : Northampton ; Bucks ; Huntingdon ; 

 Centre; Erie; Somerset; Lancaster; Allegheny; Chester. 



2. Corallorhiza Wisteriana Conrad. WiSTER'S Coral-ROOT. (Man. 

 p. 305 ; I. "P.f. 1141.) In woods, Mass. to Fla., Ohio and Tex. — Pennsyl- 

 vania : Philadelphia ; Franklin ; Lancaster ; Chester. 



3. Corallorhiza Corallorhiza (L. ) Karst. Early Coral- ROOT. 

 (Man. p. 305 ; I. "P.f. ■^J'39-) In woods, N. S. to Alaska, N. J., in the 

 mountains to Ga., and to Mich, and Wash. — Pennsylvania : Wayne ; 

 Tioga ; Lancaster. 



4. Corallorhiza muUiflora Nutt. LARGE Coral-ROOT. (Man. p. 

 306 ; I. F./. 1142.) In woods, N. S. to B. C., Fla., Mo. and QaX.— Penn- 

 sylvania : Monroe ; Northampton ; Luzerne ; Huntingdon ; Frank- 

 lin ; Bucks ; Columbia ; Armstrong ; Erie ; Lancaster ; Alle- 

 gheny ; Chester. 



20. APLECTRUM Nutt. 



1. Aplectrum spicatum (Walt.) B.S.P. Adam-and-Eve. Putty- 

 rooT. (Man. p. 305 ; I. F./. II47-) In woods and swamps, Ont. to the 

 N. W.Terr., Ore., Ga., Mo. and Ca.\.— Pennsylvania : Monroe, Water 

 Gap ; Lebanon ; Huntingdon ; Lancaster ; Mifflin ; Centre ; 

 Armstrong ; Allegheny ; Franklin ; Chester. 

 7 



