Gagea tadshikistanica Levichev

Accepted Name:

Gagea tadshikistanica Levichev, 2001. Turczaninowia, 4 (1-2): 32, tab. 9; id. 1999. Komarovia, 1: 55, nom. nud.

Description

Plantae graciles tenues ad 10 cm alt., inflorescentia bulbillifera. Bulbus 5-6 mm in diam., oblique guttiformis, tunicis tenuiter coriaceis pallide fuscis tectus. Bulbilli vegetativi pallide fusci, laeves, in statu juvenili gregarii, subglobosi elongatique, 0,3-1 mm in diam., in statu generativo solitarius, elongatus, in stolone brevissimo (0.5-1 mm lg.) dispositus, oblique deorsum directus, 2,5 mm in diam. Pedunculus 3-5 cm lg., sectione canaliculato-orbicularis, 1 mm in diam. Folium radicale solitarium, filiforme, inflorescentia sublongius, sectione canaliculatim triangulato-orbiculare, 0,4-0.5 mm in diam. Folia caulina alterna, quorum inferius inflorescentiam fere attingens, anguste lanceolatum, sensim longe attenuatum. Inflorescentia plus minusve multiflora, ramosa, bulbillis vegetativis gregariis imprimis in axillis foliorum caulinorum inferiorum. Perianthii phylla 6-8 mm lg., 2-2,5 mm lt., intus lucide flava, extus viridia, lanceolata, obtusa, aequalia. Antherae flavae, oblongae, 2 mm lt., dehiscentes subglobosae, 1 mm in diam. Ovarium obovoideum stipite longo. Stylus ovario brevior, perianthio ad trientem brevior. Capsula obovoidea, basi angustata. Semina brunnea opaca, angulato-teretia ad sectoriformia.

Typus

Tadshikistan, jugum Zeravschanicum, systema fl. Magian-Darja, montes Chazrat-Sultan, jugi brachia borealia, ad orientem ab traecto Tautasch, 24.VI.1988, M. G. Pimenov, M. G. Vasilieva, T. V. Lavrova, T. B. Kuznetzova (LE, isotypus TASH).

Habitat

Habitat in regione montana superiore montibus Hissaro-Alaicis.

Distribution

7. Pamir-Alai (N)

1. South-west Asian (N)

Image(s)

Fig. . Line Art Image Igor G. Levichev 2000 G. tadshikistanica.

Commentary

The described species is habituously similar and is altitudinal vicariant in relation to distributed on plains and on foothilises of southeast Asia well known and quite often meeting in the large abundance, G.gageoides (Zucc). Vved.
The morphological features of an ontogeny of this two species are rather excellent(different). At G. gageoides is not present basal leafs, both basal leafs are exacter - are reduced, to what the rudiments testify short, up to 0,2-1 mm. At hing-mountain G.tadshikistanica of the first basal leaf is present during all ontogeny. The second basal leaf is shown very ambiguously. On the very first years of life, in juvenile  stages, it is possible because of a diminutiveness of organs, the rudiment is not marked. In immature stages, when the short peduncle (flower stalk) is formed, of the second basal leaf simulates (under the form and function) bottom cauline leaf (fig. 2). In an axial of this leaf (to be exact - in a place of branch it(him) from a peduncle (flower stalk)) the small group of cauline bulblets is formed. Is characteristic, that thus the basis does not have vegetative bulblets in general. In generative stages of the second basal leaf at G.tadshikistanica is reduced: At the beginning of a stage there is its rudiment, which is well swept up above a basal bulblet (fig. 4, a), and at the end of a stage (in a presenile condition), the reduction gets an extreme degree of expression - the formation of a vegetative bulblet and not appreciablly of any sheet formations stops. (fig. 5).