(1844) p. 746, no. 535; KptM. <&jr. Ajit. II (1903) p. 531. P. polgphyllum Ledeb. Fl. Alt. I, 

 p. 314. 



On dry declivities and rocky slopes at Ust Kamsara and Ust Tara-kem; in flower 

 and partly done flowering at the end oi August. 



Distribution: Southern Siberia from aboutSemipatinsk to the government of Irkutsk, 

 northern Mongolia. 



Heracleum dissectum Ledeb. Fl. Alt. I, p. 301; Turczan. Cat. Baical. no. 548; Ledeb. 

 Fl. Ross. II, p. 323; Turczan. Fl. Baical.-Dahur. (1844) p. 748, no. 537; EpBiJi. Oji. Ajit. II 

 (1903) p. 533. 



In 4>ji. MaHbqjKypin III (1907), the excellent work on the vegetation of eastern Asia, 

 KoMAROWf identifies this species with the American H. lanatum Michx. (Fl. Bor. Amer. 

 1803, p. 166), agreeing with Maximowicz, who ha^ examined this group of Heracleum in 

 point of monography. Moreover, he refers as synonyms of this species: H. barbatum 

 Ledeb., H. dulce Fischer, and H. Moellendorffii Hance. However, as I want sufficient 

 material for enabling me to form any opinion whether this be right, I have chosen to 

 enter the species here under Ledebour's earliest name given to the plant peculiar to the 

 interior, of Asia. 



The species is pretty common in meadows and in copse wood on islets in the river 

 Abakan, where I have collected it with young flowers at the end of June. It is also rather 

 frequent about Kushabar, and in the subalpine tracts about the Upper Amyl, moreover, 

 in the Urjankai country, about the basins of the rivers Algiac, Sisti-kem, Kamsara, and 

 Tara-kem, where, in places, covering glades,and the like, over large tracts. In the Altaian 

 it ascends to about the tree limit. 



Distribution: Siberia, in the Yenisei valley northwards to past 70° north lat., and 

 eastwards to the Amoor Province, Kamtchatka, Turkestan and northern Mongolia, Sakha- 

 lin, Japan, Corea and China. If, conformable to Komarow, 1. c, it is to be identified with 

 H. lanatum, there must still be added to its geographical range: North America, south- 

 wards to about Utah. 



Anthriscus silvestris (L.) Hoffm. Gen. Umbellif.. (1814) p. 40; Ledeb. Fl. Ross. II, p. 

 346; Turczan. Fl. Baical.-Dahur. add. et emend. (1857) p. XXIX, no. 1431; KptiJi. 4)jr. Ajit. 

 II (1903) p. 538. Chaerophyllum silvestre L. Spec. PL ed. II (1762) p. 369. 



Near Kushabar, in meadows, and at Ust Algiac, Ust Sisti-kem and Ust Tara-kem, in 

 brush-wood, near the river. I have found it flowering in the second half of July. 



Distribution: Europe, Caucasia, and south-western Asia, Siberia, in the Yenisei 

 valley northwards to about 70° north lat., eastwards to Kamtchatka, Manchooria, China, 

 Japan, northern Mongolia, Cashmere, India, North Africa. 



Pleurosperum austriacum (L.). Hoffm. (Icn. Umbellif. (1814) p. 8; Ledeb. Fl. Alt. I, p. 

 368; Ledeb. Fl. Ross. II, p. 360; Turczan. Fl. Baical.-Dahur. (1844) p. 753, no. 541. P. uralense 



335 



