Paris quadrifoliiis L. Spec. PL ed. II (1762) p. 526; Ledeb. Fl. Alt. II, p. 88; Ledeb. 

 Fl. Ross. IV, p. 120; KpH.i. <1\k. A at. VI (1912) p. 1333. 



Scattered in shady places in the subalpine woods about the Upper Amyl. With 

 young fruits in the first half of July. 



Distribution: Europe, except the extreme south, Asia Minor, Siberia, eastwards to 

 about the Yenisei. 



Iris flavissima Pall. Reise III (1776) p. 715; Ledeb. Fl. Ah. IV, p. 332; Turczan. 

 Cat. Baical. no. 1122; Ledeb. Fl. Ross. IV, p. 102; Maxim. Diagn. PI. Nov. Asiat. Ill, p. 

 725; Turczan. Fl. Baical.-Dahur. (1854, II) p. 101, no. 1140; Eptij. iDj. Ajct. VI (1912) 

 p. 1329. 



Rather common in the regions about the river Abakan, frequently on sandy banks 

 of rivers, and the like. Specimens gathered on the islets in the lower parts of that river, 

 at the end of June, are nearly past flowering, a few with almost ripe fruits. 



Distribution: South-eastern Europe, south-western and central Asia, southern 

 Siberia, northern Mongolia, eastern Asia. 



Iris ruthenica Alton, Hort. Kewensis ed. I (1810) p. 117; Ledeb. Fl. Alt. I, p. 55; 

 Turczan. Cat. Baical. no. 1117; Bongard et Meyer, Suppl. Fl. Ah. no. 294; Ledeb. Fl. 

 Ross. IV, p. 94; Turczan. Fl. Baical.-Dahur. (1854, II) p. 97, no. 1134; Eptiji. cfji. Ajet. 

 VI (1912) p. 1324. 



Rather common on the steppes between Minusinsk and Ust Abakansk, on grass- 

 grown hill-slopes, in thickets of Caragana arborescens, here and there associated with 

 Solidago Virgaurea, Aster alpinus, Siellaria graminea, and others. In full bloom at the 

 beginning of June. 



Distribution: South-western Asia, Siberia, northern Mongolia, northern China. 



Iris ensata Thunb. in Act. Soc. Linn. II, p. 328; Maxim. Diagn. PI. Nov. Asiat. Ill, 

 p. 699; Kpi.i.1. c&ji. A.it. VI (1912) p. 1323. Iris biglumis V^ahl, Enumer. Plant. II, p. 

 149; Turczan. Cat. Baical. no. 1120; Ledeb. Fl. Ross. IV, p. 95; Turczan. Fl. Baical.- 

 Dahur. (1854, II) p. 98, no. 1136. Iris haemaiophylla Bunge in Ledeb. Fl. Alt. I, p. 58. 

 Iris Pallasii Bunge, Enum. Alt. p. 4. 



Very common in the district about Minusinsk, where occurring in rather varied 

 soil. Here and there, among sand, in the streets of the villages, and on the hills out- 

 side. On the Abakan Steppe covering in places nearly exclusively the ground, over 

 tracts of land several square km. wide. Flowering in June and the first half of July. 



Distribution: South-western and central Asia, Siberia, northern Mongolia, eastern 

 Asia, Japan. 



Orchidaceae JUSS. 



Cypripedilum guttatum Swartz in Act. Acad. Holm. (1800) p. 251; Ledeb. Fl. Alt. 

 IV, p. 174; Turczan. Cat. Baical. no. 1115; Ledeb. Fl. Ross. IV, p. 88; Turczan. Fl. 



21 185 



