Xenascus
ceratoides (400x) Palaeohystrichophora infusorioides Dinogymnium undulosum Plancha 2 Proxapertites operculatus Proxapertites humbertoides Buttinia andreevi Echitriletes sp.
The most common tree in the reserve is Haloxylon ammodendron, and the typical shrubs are Anabasis salsa, Atraphaxis frutescens, Calligonum mongolicum, Ceratocarpus arenarius,
Ceratoides latens, and Reaumuria soongorica.
The pollen production of local taxa is very low, among which Betula nana, Salix, Selaginella selaginoides, Dryas octopetala and steppe xerophytes Eurotia
ceratoides, Ephedra and halophilous taxa Kochia prostrata, Salsola kali and Salicornia herbaceae have been identified (Pirrus 1971).
Slightly saline soils support abundant clumps of the chenopod Krascheninnikovia [= Eurotia =
Ceratoides]
ceratoides.
Shrub/succulent standing crop was dominated by Opuntia polyacantha (Table 1) with only a scattering of
Ceratoides lanata and Coryphantha missouriensis.
These salt desert communities are dominated by shrubs, including
Ceratoides lanata, Artemisia spinescens, Atriplex confertifolia, and Chrysothamnus viscidiflorus.
Historically, the Snake River Plain of southwestern Idaho was dominated largely by native shrubs (Atriplex, Artemisia,
Ceratoides, Chrysothamnus, and Purshia) interspersed with native perennial bunchgrasses (Stipa, Poa, Oryzopsis, Festuca, Sitanion, and Elymus; Yensen 1982).
The most common desert tree in the reserve is Haloxylon ammodendron, and the usual shrubs are Anabasis salsa, Artemisia, Atraphaxis frutescens, Calligonum mongolicum, Ceratocarpus arenarius,
Ceratoides lateens, and Reaumuria soongorica.
Betula, Pinus and Alnus pollen were dominant, other trees (Picea, Tilia and Quercus) and herbs (Artemisia, Chenopodiaceae, Eurotia
ceratoides and Hippophae rhamnoides) were represented by only few grains.
effusum, Gutierrezia sarothrae,
Ceratoides lanata, Chrysothamnus nauseosus) and a variety of midgrasses (Pascopyron smithii, Stipa comata, Aristida longiseta, Sitanion hystrix).
Thus, the chenopod Krascheninnikovia
ceratoides grows in the Pamirs and reappears in several arid areas in Europe, for example, in the Monegros region of the Ebro Basin, the westernmost point in its distribution.
In the shrub-grassland area where soils are coarsely textured, the saltbush is more widely spaced and there are numerous small shrubs (Artemisia frigida, Eriogonum effusum, Gutierrezia sarothrae, Chrysothamnous nauseous,
Ceratoides lanata) and perennial bunch-grasses (Stipa comata, Oryzopsis hymenoides, Aristida longiseta, Sitanion hystrix).
