New Combinations in Asian Krascheninnikovia Gueldenstaedt (Chenopodiaceae)

Abstract

New combinations in the genus Krascheninnikovia are proposed: K. arborescens (Losina-Losinskaja) Mosyakin, K. compacta (LosinaLosinskaja) Grubov var. longipilosa (Tsien Cho-po & Ma Cheng-gung) Mosyakin, and Krascheninnikovia sect. Caudatae (Aellen) Mosyakin. Krascheninnikovia Gueldenstaedt (1772: 551) is the correct name for the genus previously commonly known as Eurotia Adanson and Ceratoides Gagnebin. This nomenclatural problem has been discussed by several authors over the years (LozinaLozinskaya, 1930; Reveal & Holmgren, 1972; Grubov, 1976; Guterman, 1975; Tomsovic, 1990; Tsvelev, 1993). Unfortunately, when establishing the genus Ceratoides, Gagnebin (1755: 59) did not write a diagnosis, but rather only mentioned a pre-Linnaean work by Tournefort (1703). In the latter work the genus Ceratoides included both an annual species (later named by Linnaeus as Ceratocarpus arenarius L.), and a perennial one, which is conspecific with Krascheninnikovia ceratoides (L.) Gueldenstaedt. At the time of its establishment (Gagnebin, 1755) the genus Ceratoides included Ceratocarpus arenarius, the type of Ceratocarpus L. (1753); thus Ceratoides is a synonym of Ceratocarpus. The next available name for the genus is Krascheninnikovia. [More detailed discussion is provided by Guterman (1975) and Tsvelev (1993).] In the Flora Reipublicae Popularis Sinicae (Tsien Cho-po & Ma Chenggung, 1979) the name Ceratoides was accepted for this genus. Thus, the following new nomenclatural combinations are necessary for a forthcoming edition of the Flora of China. Krascheninnikovia arborescens (Losina-Losinskaja) Mosyakin, comb. nov. Basionym: Eurotia arborescens Losina-Losinskaja, Izv. Akad. Nauk SSSR, Ser. 7, Otd. Fiz.-Mat. Nauk 1930, No. 9: 999. 1930. Ceratoides arborescens (Losina-Losinskaja) Tsien Cho-po & Ma Chenggung, Flora Reipublicae Popularis Sinicae 25(2): 27. 1979. Krascheninnikovia compacta (Losina-Losinskaja) Grubov var. longipilosa (Tsien Cho-po & Ma Cheng-gung) Mosyakin, comb. nov. Basionym: Ceratoides compacta (Losina-Losinskaja) Tsien Cho-po & Ma Cheng-gung var. longipilosa Tsien Cho-po & Ma Cheng-gung, Flora Reipublicae Popularis Sinicae 25(2): 28. 1979. When first describing the new variety Ceratoides compacta (Losina-Losinskaja) Tsien Cho-po & Ma Cheng-gung var. longipilosa Tsieng Cho-po & Ma Cheng-gung, the authors did not cite the basionym for their new combination at the species level (see Kung Hsien-wu et al., 1978). Thus, the complete combination (species plus variety) was validated later n the Flora Reipublicae Popularis Sinicae (Tsien Cho-po & Ma Cheng-gung, 1979). Two sections, based mostly on the differences in the structure of trichomes, were established by Aellen (1952) for the genus Eurotia. The correct names for these sections, as well as a new combination for one of them, are given below. Krascheninnikovia sect. Krascheninnikovia. TYPE: Krascheninnikovia ceratoides (L.) Gueldenstaedt (type of the genus). Eurotia sect. Ecaudatae Aellen, Verh. Naturf. Ges. Basel 63: 267. 1952. TYPE: not designated. Because in Aellen's (1952) treatment the section Ecaudatae included the type of the genus, this name should be replaced by the appropriate autonym. Krascheninnikovia sect. Caudatae (Aellen) Mosyakin, comb. nov. Basionym: Eurotia sect. Caudatae Aellen, Verh. Naturf. Ges. Basel 63: 267. 1952. TYPE: Eurotia compacta LosinaLosinskaja = Krascheninnikovia compacta (Losina-Losinskaja) Grubov. The native North American species previously commonly known as Eurotia lanata (Pursh) Moquin-Tandon was transferred to Krascheninnikovia by Meeuse & Smith (1974). If accepted as a distinct NovoN 5: 52-53. 1995. This content downloaded from 157.55.39.34 on Fri, 13 Jan 2017 18:16:50 UTC All use subject to http://about.jstor.org/terms Volume 5, Number 1 Mosyakin 53 1995 Asian Krascheninnikovia entity, another North American taxon described by Rydberg (1912) as Eurotia subspinosa is in need of the same transfer or a new infraspecific combination. However, in view of the current work on the Flora of North America project, I believe this nomenclatural decision should be left to American