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(2330) Proposal to conserve the name <I>Tamarix ramosissima</I> against <I>T. pentandra</I> (<I>Tamaricaceae</I>)

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Ledebour described Tamarix ramosissima in 1829 from plants collected in Kazakhstan (Lake Noor Zaisan). In the protologue he overlooked T. pentandra Pall. (l.c.) and T. pallasii Desv. (l.c.), two earlier names which apply to the same biological entity, also widespread through Central and Western Asia. During the 19th Century, most botanists considered T. ramosissima as a synonym of T. pallasii (Boissier, Fl. Orient. 1: 773. 1867; Hooker, Fl. Brit. India 1(2): 248. 1874), or they combined it as a variety [T. pallasii var. ramosissima (Ledeb.) Bunge, Tent. Gen. Tamar.: 51. 1852]. The type of T. ramosissima is supposed to be a collection by Politow in 1826, which was later sent to Ledebour by Gleber (cf. Baum, Monogr. Rev. Gen. Tamarix: 44. 1966). However, different copies of that collection are found at several herbaria (K, PRC! and W!), and it was said to be heterogeneous (Bunge, l.c.), at times containing material of T. leptostachys Bunge as well. Hence, in order to avoid further confusion the specimen W0031725!, which includes homogeneous material matching the current concept of the species, is selected here as lectotype of T. ramosissima.
José L. Villar , Mª Ángeles Alonso , Ana Juan , John F. Gaskin , Manuel B. Crespo
USDA Scientist Submission
ARS USDA Submissions 2014 10 v.63 no.5
Journal Articles, USDA Authors, Peer-Reviewed
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