CoiJTOlTulaceae YENT. 



Convolvulus arvensis L. Spec. PI. ed. II (1762) p. 218; Ledeb. Fl. Alt. I, p. 224; Ledeb. 

 Fl. Ross. Ill, p. 91; Turczan. Fl. Baical.-Dahur. (1849) p. 353, no. 809; Herder, PI. Radd. 

 (1872) p. 490, no. 150; KpBiJi. (Dj. Ajit. IV (1907) p. 868. 



Near the village of Askys, on the Abakan Steppe, where scattered along borders of 

 fields, etc. With flowers and flower-buds in the middle of June. The specimens collected 

 belong to the forms vulgaris Ledeb. 1. c, and angustatus Ledeb. 1. c. Withered remains of 

 this species I have also observed on the steppes along the Ulu-kem, at the end of August. 



Distribution: Europe, except the most northern regions, south-western Asia, Sibe- 

 ria, in the Yenisei valley northwards to about 57° north lat. North Africa. In the East this 

 species is replaced by the very nearly allied Convolvulus sagiltifolius Fischer. 



Convolvulus Ammannii Desr. in Lamarck, Encycl. Method. Ill, p. 549; Ledeb. Fl. Alt. 

 L p. 226; Turczan. Cat. Baical. no. 798; Karel. et Kiril. Enum. PI. Fl. AU. no. 600; Ledeb. Fl. 

 Ross, m, p. 90; Turczan. Fl. Baical.-Dahur. (1849) p. 352, no. 808; Herder, PI. Radd. 

 (1872) p. 489, no. 149; Kpbi.T. $ji. Ajit. IV (1907) p. 869. 



Rather common on the Abakan Steppe, especially in dry, sandy or stony places; with 

 flowers in June. It also occurs in the Urjankai country, where I have observed it in seve- 

 ral places on the steppes between Tapsa and Cha-kul, Adhere past flowering at the end of 

 August. 



Distribution: Southern Siberia, northern Mongolia, Manchooria, China. 



Cuscutaceae DUMORT. 



Cuscuta europaea L. Spec. PI. ed. II (1762) p. 180; Ledeb. Fl. Alt L p. 294; Tur- 

 czan. Fl. Baical.-Dahur. (1849) p. 357, no. 811; Herder, PI. Radd. (1872) p. 499, no. 154; 

 KpBM. «I>jr. Ajit. IV (1907) p. 874. 



Here and there on islets in the rivers Yenisei and Abakan, where I have observed 

 it on plants as Campanula, Uriica, Cacalia hastata, Artemisia vulgaris, and others. With 

 young flower-buds in June. 



Distribution: Nearly all over Europe, except the most northern parts, Siberia, north- 

 wards to about 61° north lat., Manchooria, sovith-western Asia, roughly to the north of 

 India, North Africa. 



Cuscuta lupuliformis Krocker, Fl. Siles. I (1787) p. 261; Herder, PL Radd. (1872) p. 

 501, no. 156; EpBui. "Dji. Ajit. IV (1907) p. 875. C monogyna Ledeb. Fl. Alt I, p. 294; Tur- 

 czan. Fl. Baical.-Dahur. (1849) p. 358, no. 812; Herder, 1. c. (1872) p. 500, no. 155. 



var. asiatica Engelm., Kpi,i.i. 1. c. (1907) p. 875. 



The Asiatic specimens differ from the European ones in having the corolla-scales 

 entire, ovate or broadly ovate, not 2-cleft. Of very common occurrence on low, sandy 

 islets in the Bei-kem, near the mouth of the Tapsa, where it is parasitic on Salix vimina- 

 lis. I have collected it in the last days of August with fruits of the size of a pea. 



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