318 MR. H. N. RIDLEY’S REVISION OF THE 
§ Dienia. 
1. MICROSTYLIS MONOPHYLLOS, Lindl. Orch. Pl. p.19; Reichb. 
Ic. Flor. Germ. xiii. p. 163; Regel, Ind. Sem. Hort. Petrop. 1878, 
p. 18; Gray, Manual Bot. ed. 5, p. 509; Torrey 4 Gray, Fl. 
N. York, p. 268; Irmisch, in Flora, 1863, p. 2.—M. diphyllos, 
Lindley, Orch. Pl. p. 19; Regel, Ind. Sem. Hort. Petrop. 1868, 
p. 79.—M. brachypoda, Asa Gray, in Ann. Lyc. New York, ii. 
p. 228.—M. Gmelini, Lindl. Orch. Pl. p. 11.— Ophrys mono- 
phyllos, Linn. Sp. Pl. ed. i. p. 947.—O. wovöpvAAos bulbosa, 
Loesel. Fr. Pruss. ed. 1708, p. 180, t. 57.—O. latifolia, Linn. Fl. 
Suec. ed. ii. p. 316. n. 811.— O. lilifolia, Lina. Sp. PI. ed. i. p. 946. 
—O. scapo nudo etc., Ehret, ‘in Phil. Trans. liii. (1764) p. 81, 
t. 4.—Epipactis folio unico ete., Hall. Hist. Stirp. Helv. p. 151, 
t. 38.—E. monophyllos, F. W. Schmidt, in Meyer, Phys. Aufs. 
1791, p. 245, t. iii. —Malaxis monophylla, Swartz, Fl. Ind. Occ. 
p. 1443; Stockh. Nya Handl. xxi. 1800, p. 234; Gen. & Sp. Orch. 
p. 69; Willd. Sp. Pl. iv. p. 90; Wahlenb. Fl. Suec. ii. p. 561.— 
M. diphyllos, Cham. in Linnea, iii. p. 34.—Monorchis ophioglos- 
soides, Mentzel, Pugil. t. 5. fig. 2. 
Rhizoma breviter repens, pseudobulbus ovatus, vaginis laxis 
membranaceis albescentibus tectus, l-uncialis; folium singulum 
raro bina, ovatum ellipticum obtusum flaccidum, 2 uncias longum, 
3 unciam latum ; scapus gracilis angulatus, 3-6-uncialis, dimidio 
nudo; flores minuti virides copiosi, pedicellis j-uncialibus, 
bracteis lanceolatis acutis longioribus; sepala lanceolata obtusa ; 
petala linearia angusta; labellum ovatum cuspidatum, margini- 
bus nonnunquam crispulis, carnosulum, concavum, lineis medi- 
anis tribus, auriculis nullis, basi autem excavata; columna brevis 
crassiuscula, apice dilatato, clinandrio lato; anthera majuscula; 
rtigma grande ovale; capsula elliptica oblonga erecta, "5 unciam 
onga. 
Europe: Norway, Sala, Ahlberg! Sillen! Fries, Herb. Norm. 
no. 62. Russia: Moscow, Bieberstein !; Ingria, Meinetshausen, Fl. 
Ingr. no. 627!; Shitomir, Golde!; Reval, Russow!; Dorpat, 
Lehmann!; Oesel, Heiligensee, Lehmann! ; Chudleigh, Gruner ! 
Switzerland: Lauterbrunnen, Guthnick!: Untersberg, Hoppe! ; 
Neustadt, Buchholz!; Unterlichsberg, Scholtz! Tyrol, Lowen- 
stein Mt., Roemer!;  Oetzmuhl-Oetz, Auerswald! Styria, 
Grabmayr ! 
Asia: Kamtschatka, Awatscha Bay, Seemann ! 
N. America: Michigan, Hubbardstown, Wheeler 4 Smith. 
Fairfield, Herkomer co. Hadley. Bridgewater, Oneida Co., 
