3 ed. (& Johannsen) 597 pp. Kjobenhavn, 1895. 



4 ed. (& Johannsen) Kjobenhavn, 1900-01. 



Lehrbuch der allgemeinen botanik. (From Danish by E. P. 

 Meinecke.) 



Part 1, 480 pp. Berlin, 1907. 

 2, +667 pp. Berlin, 1909. 



Die bliithe der Compositen. 



167 pp. 9 pis. Bonn, 1876. 



(Botanische Abhandlungen, Bd, III, hft. 2.) 



Die danske planteverdens histoire efteristiden. 

 Ill pp. Kjobenhavn, 1904. 



Forgreningsforhold hos Fanerogamerne. 



171 pp. 11 pis. Kjobenhavn, 1872. CP-W 277 



Froplanterne (Spermatofyter.) 



467 pp. Kjobenhavn, Kristiania, 1912. 



Haandbog i den systematiske botanik. 



1 ed. Kopenhagen, 1879. 



2 ed. 434 pp. Kopenhagen, 1884. 



Handbuch der systematischen botanik. (From Danish by 

 E. Knoblauch.) 



1 ed. 468 pp. Berlin, 1890. BN-W 277 



2 ed. 468 pp. Berlin, 1902. BN-W 277 



Handbook of systematic botany. (English by M. C. Potter.) 

 620 pp. London, 1895. BN-W 277 



Er koppen hos vortemaelken. (Euphorbia L.) en blomst 

 eller en blomsterstand? Diss. 



Ill pp. 3 pis. Kjobenhavn, 1871. 



Larobok i allman botanik. 

 297 pp. Stockholm, 1882. 



[Die pflanze und ihr leben.] Russian. 

 184 pp. Moskau, 1904. 



Plantelivet laerbogi botanik. 



2 ed. 138 pp. [Kjobenhavn], 1902. 

 4 ed. 148 pp. Kjobenhavn, 1908. 



Kern der plantkunde. (From Danish by Garjeanne, A. J. M.) 

 122 pp. Groningen, 1905. C-W 278 



Plant life, a text book of botany for schools and colleges. 

 244 pp. London, 1911. C-W 278 



(Trans, from 4th ed. of the Danish by Metta M. Rehling and Elizabeth M. 

 Thomas.) 



Plantesamfund ; grundtraek af den okologische plantegeographi. 

 335 pp. Kjobenhavn, 1895. 

 Lehrbuch der okologischen pflanzengeographie. (From 

 Danish by E. Knoblauch.) 



1 ed. 412 pp. Berlin, 1896. lE-W 277 



2 ed. 442 pp. Berlin, 1902. lE-W 277 



Russian by A. G. Henkel, from 2 ed. 

 314 pp. St. Petersburg, 1903. 



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