Gagea deserticola Levichev

Accepted Name:

Gagea deserticola Levichev, 2001. Turczaninowia, 4 (1-2): 9, tab. 2; id. 1999. Komarovia, 1: 50, nom. nud.

Description

Plantae solitariae, inaequialtae (5-21 cm alt., folium radicale ad 30 cm lg.), pauciflorae. Bulbus 0,7-2 cm diam., orbiculari-ovoideus, tunicis coriaceis fissis fuscis in collum breve (0,5-1,5 mm lg.) fibrilloso-fissum continuatis tectus; radicibus sclerificatis multis, sursum inflexis, crassis, rigidissimis, densis circumcinctus. Specimina generativa bulbillis destituta; bulbillus vegetativus statu juvenili formatus, semiguttiformes vel curvato-semigutiformis, radicibus sclerificatis sursum directis, crassis paucis circumcinctus; in statu immaturo inter bulbo et bulbillo basali bulbillus sororius solitarius, brunneus, tenuiter longitudinaliter striatus, in stolone brevissimo (0,5 mm lg.) sursum directo formatus. Pedunculus 3-9 cm lg., 1-2 mm in diam., sectione teres, costa abaxiali obtusa, internodio uno (raro duobus vel nullo) in inflorescentiam 3-15-floram ramificatus Folium radicale solitarium, lineare, inflorescentiam ad trientem superans, 1-2 mm in diam., sectione concavo-semiorbiculare et centro minute fistulosum. Folia caulina alterna, quorum infimum e radicalibus enatum, inflorescentiam fere attingens, anguste lineari-lanceolatum, 1,5-3 mm lt., sensim longe attenuatum, naviculare, sectione haud profunde concavum. Perianthii phylla 8-12 mm lg., 2-3 mm lt., lanceolata, sub anthesi elongata, obtusata, intus lucide flava, extus viridia, interiora exterioribus vix breviora et angustiora. Antherae flavae, lineares, 2-2,5 mm lg., dehiscentes sphaeroideae, ad 1 mm lg. Ovarium oblongum, sessile. Stylus ovario aequilongus, stigma capitatum. Capsula subgloboso-triangulari-prismatica, sessilis. Semina tenuiter plana, pallide brunnea.

Typus

Uzbekistan. Kyzylkum Centralis, ad meridiem ab oppido Uczkuduk, artemisietum, arenae, 31.III.1982, I. Levichev (LE, isotypus TASH).

Habitat

Habitat in arenis parvigranulosis in regionibus centralibus deserti Kyzylkum (Bukantau, depressio Minbulak).

Distribution

1. South-west Asian (N)

Image(s)

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

Commentary

In a direct neighbourhood there are plants of the different sizes. Most slender young, only entered in generative a stage, specimens. Old age of a specimen the having large bulbs and multi-layer braiding from sclerificatous roots, usually grow under covering of deserted bushes. The sclerificatous roots at it species especially incrassate, very rigid and concede to similar braidings at a little G. circumplexa, which lives on more dense, clay soils of foothills of a Fergana valley.
In immature stages G. deserticola is present two basal and 1-3 poorly advanced cauline leafs (фиг. 3). In generative stages of the second basal leaf, as well as at described above G. alexejana, grows together with a peduncle (flower stalk), being separated below or directly under an inflorescence as the bottom cauline leaf. Such leaf it is necessary to name as the bottom cauline leaf of a basal origin.