Cruci ferae Juss. 



Lepidium apetalum Willd. Spec. PI. Ill (1800) p. 439; Bymi., Papaverac. rt, fl>.i. 

 ChShp. II ;i;ajn.H. BocT. 1(1913) p. 90. Lepidium micranthum Ledeb. Fl. Ross. I, p. 205 et 765 

 ex parte (incl. var. apetalum); Karel. etKiril. Enum. PI. Fl. Alt. no. 112; Thellung, Gatt. 

 Lepid. in Mitt. Bot. Mus. Univ. Zurich, 28 (1906) p. 131; Kpi.i.i. $ji. A.it. I (1901) p. 



110. Lepidium incisum Ledeb. Fl. Alt. Ill, p. 193. 



Occurring as a ruderal plant at and about Minusinsk, and scattered near habita- 

 tions in the Urjankai country. With flower and fruits in June— August. This species 

 is very nearly allied to Lepidium ruderale, being the European species, and Lepidium 

 apetaZum the one taking its place in Asia. By human agency, however, the geographical 

 ranges of these plants have been confounded, so as to spread Lepidium ruderale over 

 great parts of Siberia, eastwards to about Lake Baikal, while, on the other hand, Lepi- 

 dium apetalum has also been introduced into Europe. Accordingly, both the species 

 occur at Minusinsk. 



Distribution: Southern Siberia, eastwards to China, Corea, Mongolia, the Hima- 

 layas, Tibet, Cashmere, Turkestan. Introduced into Russia, western Europe, and North 

 America. 



Lepidium ruderale L. Spec. PI. ed. II (1763) p. 900; Ledeb. Fl. Alt. Ill, p. 195; 

 Turczan. Cat. Baical. no. 177; Ledeb. Fl. Ross. I, p. 204 et 765 (excl. loc. Baikal et 

 Davuriam); Turczan. Fl. Baical.-Dahur. (1842) p. 289, no. 169; Thellung, Gatt. Lepid. 

 p. 135; Byuii., Cruciferae bi. $ji. Ch6hp. ii JI^jshH. Boct. I (1913), p. 94; Regel, PI. Radd. 

 (1861) p. 209, no. 246; EpBM. $ji. Ajit. I (1901) p. 110. 



Scattered as a weed in the streets of Minusinsk, and in the neighbourhood of 

 that town. With flowers and fruits in June and July. 



Distribution: Europe, and south-western Asia to the Himalayas and Tibet, Siberia 

 to about Lake Baikal, South Africa, North and South America. 



Lepidium crassifolium Waldst. et Kit. PI. Rar. Hung. I (1799) p. 4; Ledeb. Fl. Alt. 



111, p. 185; Karel. et Kiril. Enum. PL Fl. Alt. no. 109; Ledeb. Fl. Ross. I, p. 208 et 765; 

 KpBiJi. <I>.T. A.1T. I (1901) p. 112; Byim., Cruciferae bt, $.t. Ciioiip. ir J-A.-n.ii. Boct. I (1913) 

 p. 97. Lepidium cartilagineum (I. iNIayer) Thellung subspec. crassifolium Thellung, Gatt. 

 Lepid. p. 153. 



Rather common on the Abakan Steppe, near Ust Kamuishto, on saliferous soil, and 

 on the banks of the salt-lake Tagarski osero. In flower and with young fruits in the 

 second half of June. The specimens are beset with scattered hairs all over the stem. 

 Ihe basal leaves are oblong, or spatulate-oblong, and rather deeply indented, as is also 

 the case in the lower stem-leaves. The specimens therefore much resemble var. denta- 

 ium (Boiss. et Ball.) Thellung, 1. c. p. 155. 



Distribution: Austro-Hungary to the west, through south-eastern Europe and 



254 



