References
- Chauveaud , G. 1911 . Ann. Sc. Nat. Bot. , xiii ( 9 )
- Compton , R. H. 1912–13 . Jour. Linn. Soc. Bot. , xli
- Guignard , L. 1890 . Compt. Rend. Ac. Sc. Paris , cxi
- Saunders , E. 1925 . Ann. of Bot. , xxxix
- Schweidler , J. H. 1905 . Ber. deutsch. bot. Gesell. , xxiii
- Solereder , H. 1908 . Systematic Anat. of Dicots. Vol. i , Engl. Trans.
- Spatzier , W. 1893 . Prings. Jahrb. wiss. Bot. , xxv
- Thomas , E. W. 1914 . Ann. of Bot. , xxviii
- Van Tieghem , Ph. 1891 . Traité d. Bot. , i