1923] REHDER, THE LIGNEOUS PLANTS OF NORTHERN CHINA 191 



Clematis glauca var. akebioides Rehder & Wilson in Sargent, PL Wilson. 



i. 342 (1913). 



Clematis orientalis var. akebioides Maximowicz in Act. Hort. Petrop. xi. 6 



(1890). 



Kansu: Lao chon district, alt. 3000 m., W. Purdom, no. 1129, 1911; 

 Tow River, alt. 3000 m., W. Purdom, no. 1022, 1911.— See also Maxim- 

 owicz, 1. c, and Rehder & Wilson, 1. c. 



Distribution: also Szechuan. 



Some of the specimens, also those cited above, are more or less inter- 

 mediate between this and the preceding variety, but the extreme forms of 

 both varieties look very distinct. Purdom's two specimens are referable 

 on account of the violet color of their flowers to C. glauca var. akebioides 

 f. phaeantha Rehder (in Jour. Arnold Arb. I. 195 [1920]), based on cultivated 

 specimens raised from seed probably collected in Kansu by Purdom; 

 this form, too, is intermediate between the two varieties. 



Clematis Kirilowii Maximowicz in Bull. Acad. Sci. St. Petersb. xxn. 



210 (1876); in Mel. Biol. ix. 583 (1876). 



Clematis Massoniana ? Maximowicz in Mem. Div. Sav. Acad. Sci. St. Petersb. 

 ix. 468 (Ind. FL Pekin.) (1859). 



Chili: near Peking, Kirilow (ex Maximowicz, 1. c). 



Finet & Gagnepain do not mention this species and I have seen no speci- 

 mens referable to this species which may be only an abnormal form of 

 C. glauca. 



Clematis tangutica Korshinsky in Bull. Acad. Sci. St. Petersb. ser. 5, 



ix. 399 (1898), excl. descript. — Rehder & Wilson in Sargent, PL Wilson, i. 

 343 (1913). 



Clematis orientalis var. tangutica Maximowicz, FL Tangut, 3 (1889). 

 Kansu: P. J. Piasezki (ex Maximowicz, 1. c). 



Piasezki's specimen may belong to the following variety, as it is doubtful, 

 if typical C. tangutica occurs in Kansu. 



Clematis tangutica Andre var. obtusiuscula Rehder & Wilson in Sargent, 

 PL Wilson, i. 343 (1913). 



Kansu: Choni and Lao chon, alt. 3000 m., W. Purdom, no. 1023, 1911. — 

 See also Rehder & Wilson, 1. c. 



Distribution: also Szechuan. 



Clematis alpina Miller, Diet. Gard. ed. 8, no. 9 (1768).— Franchet in 



Nouv. Arch. Mus. Paris, ser. 2, v. 166 (PL David. I. 14) (1882).— Hemsley 



in Jour. Linn. Soc. xxm. 1 (1886).— Pritzel in Bot. Jahrb. xxix. 333 



(1900).— Finet & Gagnepain in Bull. Soc. Bot. France, l. 551 (1903); 



Contrib. Fl. As. Or. i. 36 (1905).— Limpricht, Bot. Reis. Hochgeb. Chin. 

 Ost-Tib. 373 (1922). 



Clematis alpina var. chinensis Maximowicz in Act. Hort. Petrop. xi. 10 (1890). 



