Ill liuinifl. ^rass-^row 11 phicrs in llic i;iii;;i on Ihc I'liiici Sisli-I<i'ivi; I'lnw crin^ :ni(l 

 past llowt'iiiif^ al the end of .luly. 



Dislrihntion: Middle lMiro])e. Caucasia and sDnUi-western Asia, sonllieni Silieiia lo 



alioiil ^akiilsK. iiiiillicin Mi)nL'i>lia. 



Pleiir<tj;yiu' rotala (L.) (iiiscl). dcnlidn. (18;')',l) p. IKi'.t; I.cddi. I'l. Koss. ill. p. 71: Tin- 

 e/an. l"i. BaicaL-Daiinr. ( 18 19) p. :5:M. no. 796: Herder. I'l. Hadd. (1872) p. W.i. no. 134; 

 lipi.i.i. 'l>.i A.M. Ill (1901) p. 8.")(i. a. siilcniii Willd. I.edel). Fl. .Ml. I. p. 290; Turczan. Cat. 

 Baical. no. I(i9. Smrrlin roldhi L. Spec. PI. cd. 11 ( 17(12) j). 328. 



Ill meadows near lagaisUi oscro, and in llie rrjanUai counlrv. rather conunon 

 about the Upper Hei-kem. near the Dora Steppe, the Kuree, and at I'.sl Tara-Uem. where 

 1 have collected it in grassy, soincliines slightly moist places in brush-wood, etc.. in full 

 flower ill August. 



Distribution: North-eastern Euroiie, Siberia lo Kamtchatka and llie Ainoor Pro- 

 vince, norlherii Mongolia, northern (".hina. .lapan. Noi (li .\meric;i. and Greenland. 



Anagallidiuin dichotomum (L.) Griseb. (ienlidii. (1839) p. 312: Karel. el Kiril. Enum. 

 PI. Fl. Alt. no. 592: Ledeb. Fl. Ros.s. Ill, p. 72: Turczan. Fl. Haical.-I )aluir. (1849) p. 336, 

 no. 798: Herder. PI. Radd. (1872) p. 466: no. 136; Im.m.i. 'Iu. A.n. Ill (1904) p. 8.")8. Sirrrlia 

 (licholoma L. .\moen.Acad. II, p. 317: Ledeb. Fl. Alt. 1. p. 291: Turczan. Cat. Baical. no. 787. 



The material collected is rather varying, but seemed to be separable into 2 forms, of 

 which one is distinguished by a \igorous, compact growth, much branched from the base, 

 and with short internodes. The rather large leaves are 3- lo 5-nerved. and llic upper jiedi- 

 cels generally so short that the flowers do not reach abo\ e the upper pair of leaves. The 

 leaves are, like the branches, rather stiff and appressed-ascending. The petals are of a 

 light, ncarlv white colour, with distinctly yellow, strongly marked veins. This form 

 much recalls Pam.as's figure in Fl. Ross. t. II, fig. A. 



The other form is distinguished by a more slender and delicate grow th. with longer 

 internodes, smaller and narrower. 1- to 3-ncrved leaves. The fine pedicels are long and 

 drooping. The petals are of a greenish colour, with distinct nerves of a rather deep green. 

 These specimens are suggestive of Pai.i..\s's illu.stralion I. c. fig. C. For the rest, as regards 

 the colour of the flowers in this species, Pallas remarks: ,.F'lores multo minores quam 

 praecedentis viridiores, interdum subrubentes. . ." As my material is rather scarce, I dare 

 not express any opinion on the systematic value of these characters. 



The species is scattered in grass-grown places about the rivers Yenisei and Abakan, 

 and on the islets, partly associated with Moehringia lateriflora, where collected by me in 

 full flower in the middle and at the end of June. 



Distribution: Dzungaria, southern Siberia, in the Yenisei valley northwards to 58° 

 north lat., and eastwards to Trans Baikal, northern Mongolia. 



Halenia sibirica Borkhausen, in Roemer, Archiv. I (1796) p. 25: Turczan. Cat. Baical. 

 no. 788: Ledeb. Fl. Boss. III. p. 74; Turczan. Fl. Baical.-Dahur. (1849) p. 341, no. 801: 



359 



