KpBM. 3)ji. Ajit. II (1903) p. 503. Euphorbia perfoliata Scheutz, PI. Vase. Jenis. in Kgl. Sv. 

 Vet. Akad. Handling. XXII (1888) p. 158 sec. JkTBHHOB'i., EnSjuiorp. (1909) p. 345. 



Common in the Uijankai country and in the tracts traversed bordering upon Sibe- 

 ria, especially in open copse wood of birch and other foliage trees, where it is a charac- 

 teristic plant: along the river Algiac, at Ust Algiac, in the Altaian, near the tree limit, at Ust 

 Sisti-kem, and on the Kamsara. Collected in flower in the second half of July and in 

 the first half of August. 



All of the specimens collected are distinguished by having the bracts of the invo- 

 lucels small, roundish, broadly cordiform, 4 — 7 mm. in diameter. The involucre consists of 

 3 — 4 bractlets of a much varying size and shape, 0,3 — 1,4 cm. long, from nearly circular 

 to narrowly ovate, with slightly pointed apices. The stem, sometimes rather much 

 twisted, is 30 — 50 cm. high; the lower leaves commonly? — 8 cm. lorig (rarely to 13 cm. 

 long), and about 2 cm. broad, broadly lanceolate, clasping the stem, or also rather sud- 

 denly narrowed into a shorter or longer petiole, the apex slightly subobtuse or sub- 

 acute, frequently furnished with a fine prickle. The upper leaves are sessile, shorter, to 

 nearly cordiform, with a broad, cordiform base clasping the stem. The plant is of a 

 rather strongly marked yellow, especially so the upper parts. 



Distribution: The variety aureum occurs in south-eastern Russia, Turkestan, Dzun- 

 garia, soutliern and eastern Siberia (in the Yenisei valley to about 58° north lat.), through 

 the Altai and Sayansk regions, eastwards throughout Trans Baikal and northern China 

 to the Amoor Province, northern Mongolia. 



Bupleurum triradiatum (Hoffm.) Adams, Nouv. Mem. Soc. Natur. Moscou IX (1834) 

 p. 235; Turczan. Cat. Baical. no. 516; Ledeb. Fl. Ross. II, p. 264; Turczan. Fl. Baical.- 

 Dahur. (1844) p. 719, no. 506; Epi-M. Oji. Ajit. II (1903) p. 504; Koso-IIoJiHHCKift, Sohtothbih bt, 

 ^es^eHKO, $ji. Asiax. PoccIh 10 (1915) p. 14. B. ranunculoides var. triradiatum (Adams) 

 Regel, Wolf, Umbellif. in Engl. Pflanzenr. H. 43 (IV, 228, 1910) p. 117; Koso-Poljanski, 

 Epit. Bupleurum Rossiae (1914) p. 198. B. ranunculoides /S oblongifolium Ledeb. Fl. 

 Alt. I, p. 348. 



Stems 15 — 20 cm. high, generally unramified. The basal leaves few, narrowly ovate- 

 lanceolate. Bracts of the involucre 3, mostly of unequal size, to 1 cm. long, ovate, with a 

 cordiform base, more or less subobtuse at the apex. Umbels 3- to 4-rayed. Involucels 

 of 5 — 8 small bractlets, 6 — 7 mm. long, obtuse at the top, and sometimes furnished with 

 a fine point Each umbellet consisting of 20 — 25 flowers. In the Altaian, in grass-grown 

 places above the tree limit, not unfrequently accompanying Beiula rolundifolia, in places 

 grown with lichens and mosses. Collected in full flower at the end of July. 



Distribution: Turkestan, southern Siberia, through the Altai and Sayansk regions, 

 northern Mongolia, Trans Baikal, eastwards to Kamtchatka and the Amoor Province, Sak- 

 halin, Japan, North America. 



Bupleurum multinerve DC. in Mem. Soc. Phys. et Hist. Nat. Geneve IV (1828) p. 500; 

 Wolff, Umbellif. in Engl. Pflanzenr. H. 43 (IV, 228, 1910) p. 119; Turczan. Cat. Baical. 



331 



