Symphytum peregrinum Ledeb. | Wang, G., Z. Li & Q. Meng. 1983. An observation of chromosome numbers of Comfrey from different sources. Acta Phytotax. Sin. 21: 55–59. | 82-83 | | 40 |
|
|
Symphytum peregrinum Ledeb. | SHIRATO, K., T. Shintani, G. Nakanishi & A. Kamizy;afo. 1985. Chromosome numbers in genus Symphytum. Chromosome Inf. Serv. 38: 21–23. | 84-85 | | 45, 65 |
|
|
Symphytum peregrinum Ledeb. | Huizing, H. J. 1985. Phytochemistry, systematics and biogenesis of pyrrolizidine alkaloids of Symphytum taxa. Thesis, Meppel. ý. | 84-85 | | 40 |
|
|
Symphytum peregrinum Ledeb. | Gadella, T. W., E. KLIPHUIS & H. J. Huizing. 1983. Cyto- and chemotaxonomical studies on the sections Officinalia and Coerulea of the genus Symphytum. Bot. Helv. 93: 169–192. | 82-83 | | 40 |
|
|
Symphytum peregrinum Ledeb. | Probatova. 2006. Chromosome numbers of plants of the Primorsky Territory, the Amur River basin and Magadan region. Bot. Zhurn. (Moscow & Leningrad) 91(3): 491–509. | 04-06 | | 36 |
|
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