ria, northAvards to about 61° north lat., and eastwards roughly to Lake Baikal. Var. ircii- 

 tianiim occurs chiefly in the Altai region, and eastwards to Lake Baikal. 



Chrysanthemum sibiricum Fischer in litt. ex DC. Prodrom. VI, p. 46; Kptiji. 4>ji. 

 Ajit. Ill (1904) p. 619. Leucanthemum sibiricum DC. 1. c; Ledeb. Fl. Ross. II, p. 541; 

 Turczan. Fl. Baical.-Dahur. (1846) p. 176, no. 595; Herder, PI. Radd. (1865) p. 413, no. 85. 

 C. arcticum Ledeb. Fl. Alt. IV, p. 115 (non L.). 



This species, which is readily distinguished by its reddish or violet rays, I have 

 found scattered in thickets of foliferous and coniferous trees between Minusinsk and 

 Karatus, and on slopes at Ust Algiac and near Ust Kamsara. In full flower in July. 



Distribution: North-eastern Russia, Siberia, the Amoor Province, Manchooria, 

 Corea, China, northern Mongolia. In the most eastern range of the species it occurs in 

 a somewhat deviating form, fi acutiobiim DC. 



Matricaria discoidea DC. Prodrom. VI, p. 50; Ledeb. Fl. Ross. II, p. 544; Herder, PI. 

 Radd. (1865) p. 409, no. 82; KpBui. $ji. Ajet. Ill (1904) p. 623. 



As a weed about the road between Karatus and Kushabar, in some places pretty com- 

 mon. It was to be found accompanying plants such as Trifolium repens, Malva borealis, 

 and others, in full flower towards the middle of July. The specimens collected are distin- 

 guished by having the stems strict, and generally simple; the segments of the leaves are 

 very fine and filiform, generally 0,3 — 0,5 mm. broad. For the rest, the plants agree per- 

 fectly with the Norwegian specimens I have had for comparison. In the somewhat oblique 

 achenes, furnished with 4 — 5 prominent stripes, of a characteristic, reddish brown, can 

 be observed a very small and reduced pappus, only appearing as an obscure crown. 



Distribution: The species is a native of the Pacific coast of North America and 

 the regions about the Sea of Okhotsk and Kamtchatka in north-eastern Asia, from where 

 recorded already by Ledebour (1844 — 46). From here scattered, especially along the 

 railways, over large parts of North America, and further to Europe, where spreading 

 quickly of late years, mostly as a weed in and about the greater towns. In eastern Europe 

 it is not frequent, but has previously. been observed as far east as western Siberia (Omsk 

 and Tomsk); to the Minusinsk district, heretofore known as its most eastern locality, it 

 has probably been diffused from the west. Not yet met with in Trans Baikal or China, 

 but has also in eastern Asia a tendency to extend, especially along the railways. 



Matricaria inodora L. Fl. Suec. ed. II, no. 765; Ledeb. Fl. Ross. II, p. 545; Kpi.i.i. $ji. 

 Ajit. Ill (1904) p. 624. Chrysanthemum inodorum L. Sp^c. PI. ed. II (1763) p. 1253. 

 Tripleurospermum inodorum C. H. Sch. Rip., Herder, PI. Radd. (1865) p. 410, no. 83. 



On the steppes about Minusinsk and Karatus, with leaves and young flowers at the 

 beginning of July. 



Distribution: Europe, except the extreme south, Caucasia, south-western Asia to 

 Russian Turkestan, Siberia, northwards to towards 71° north lat, Manchooria, North 

 America. 



421 



