Die neueren Beitr. z. pflanzengeogr, Kenntnis Russlands. 53 
X, Papers on Euphorbiaceae. 
4. Euphorbiaceae of the Mexican Boundary. 1859. 
2. Euphorbiae of a collection by L. J. Xantus in Lower California, 1861. 
8. Euphorbiaceae of the Joes exploration. 4864. 
A, On the genus Euphorbia in DE CANDOLLE's Prodromus. 1862. 
3. Euphorbiaceae of WuEELtEN's Exploration. 4878. 
6. Collected descriptions of Euphorbiaceae, 
XI. Papers on Isoétes. 
1. Species of Isoëtes in Parry’s botanical observations in Western Wyoming. 1874. 
2. Species of Isoëtes of the Indian Territory. 1878. 
3. The genus Isoëtes in North America. 1882, 
XII. Shorter Miscellaneous papers. 
4. Remarks on Nelumbium luteum etc. 1860. 
2. Dimorphism of Draba brachycarpa. 1862, 
3. Structure of the fruit and seed of Ribes, 1862, 
4. Revision of the Oenotherae of subsection Onagra. 1862. 
5. Revision on Viburnum and Cornus, 1866, 
6. Papers on Gentianeae. 1863. 
7. Collected species of Asclepiadeae. 1850, 
8. Papers on Loranthaceae. 1849. 
9. Spirodela. 4870. 
10. Species of Alismaceae. 1859. 
11. Two new dioeceous Grasses of the United States. 41859. 
XIII. Lists and collected descriptions of plants. 
. Catalogue of a collection of plants made by CHARLES A, GEYER. 1843, 
. Descriptions in plantae Lindheimerianae. 4845. 
. Descr, in plantae Fendlerianae. 4849. 
. Descr. in plantae Wrightianae. 1853. 
. Descr. in botany of the Upper Missouri. 1861. 
. Species founded in Gray’s Manual. 4856, 1868. 
. Note on Polygonum tenue. 
. Botany of Sınpson’s Expedition, 4876. 
. Deser. and notes from the Botanical Gazette. 
. Descr. from the Bullet. of the Torrey botan. Club. 
XIV. General Notes. 
4. Character of the vegetation of Southwestern Texas. 1851. 
2. Distribution of the North American Flora. 1877. 
3. The Compass plant. 4834. ` E. 
c H 00-10 OC Aue 
= 
Die neueren Beiträge zur pflanzengeographischen Kenntnis 
Russlands*). 
In ausführlichen Auszügen mitgeteilt 
von 
Dr. F. v. Herder. 
€. Steppengebiete. 
Krassnoff, A.: Geo-botanische Untersuchungen in den Kal- 
mükensteppen. (In den Nachrichten der Kais. Russ. Geograph. 
Gesellschaft. XXII. Bd. p.1—52). Russisch. — St. Petersburg 1886. 
1. Nach ihrem geologischen Bau kann die Kalmükensteppe in zwei von einander sehr 
verschiedene Gebiete eingeteilt werden, in ein westliches höher gelegenes, das s. g. 
*) Vergl. Bot. Jahrb. VIII. Litteraturber. S. 119 ff. u. IX. Littératurber, S. 34. 
