Gagea xiphoidea Levichev

Accepted Name:

Gagea xiphoidea Levichev, 2001. Turczaninowia, 4 (1-2): 34, tab. 10.

Description

Plantae nanae, 5-8 (10) cm alt., foliis arcuatis, solitariae vel per paucos in greges congestae. Bulbus oblique guttiformis, 0,5-0,8 mm in diam., tunicis tenuiter coriaceis griseolo-pallide-fuscis tectus. Specimina generativa bulbillis destituta, specimina juvenilia bulbillis 1-10, globosis vel elongato-globosis, atro-griseis, opacis, haud profunde rugoso-foveolatis, in stolonis communi brevissimis (0,5-1 mm lg.) formatis; in statu immaturo bulbilli basalis et ei oppositus sororius ceteris majores. Pedunculus 3-4 cm lg., sectione quadrangularis, 1-1,5 mm lt., verticillo e foliis caulinis duobus oppositis et pedicellis 1-2(3) brevibus (1,5-2 cm lg.) inaequilongis composito. Folium radicale solitarium, anguste lanceto-lineare, inflorescentiam superans, 1-2 mm lt., sectione angulosum. Folium caulinum infimum e radicalibus enatum, inflorescentiae aequilongum, anguste lanceolatum, 2.5-4 mm lt., sensim acutatum, sectione naviculare. Perianthii phylla anguste lanceolata, apice rotundata, 9-12 mm lg., sub anthesi elongata, 0,8-1,7(2) mm lt., intus flava, extus violaceo-viridia, interiora paleimarginata, exterioribus vix breviora et angustiora. Antherae flavae, lineares, 3 mm lg., dehiscentes sphaeroideae, 1 mm lg. Ovarium ovale, sessile. Stylus ovario duplo longior, stigma capitatum. Capsula perianthio plus quam duplo brevior, obovoidea, sessilis. Semina tereti-sectoriformia.

Typus

Rossia, Respublica Altai, districtus Kosch-Agaczensis, regio stepporum Kuraiensis, ad ostium fluvii Korumdu (affluxio sinistra fluvii Akturu), 1620 m s. m., 18.V.1998, I. Levichev, P. Goljakov (LE, isotypus SSBG).

Habitat

Habitat in locis apertis herbosis regionis stepporum Kuraiensis (Altai Rossicum).

Distribution

5. Siberian (N)

Image(s)

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

Commentary

In immature stages, at the basis the group of vegetative bulblets develops (fig. 2, 5), among which on the sizes two are allocated largest: basal and opposite sisterous. Both bulblets, before others begin to get cellular structure of a surface and dark colouring. These details of development testify to an accessory(belonging) them to the lowermost phytomers of a shoot. As basal develops in an axial of the second basal leaf (in this case - borrows(occupies) his place), second corresponds(meets) bottom cauline. The similar feature of an arrangement of bulblets is described above at G.shmakoviana species also dwelling(living) on Altai, but at small heights and on periphery of a mountain file.