56 THE FRUIT OF OPUNTIA FULGIDA. 



LITERATURE CITED. 



Caspabi, H. 1883. Beitrage der Kenntniss des Hautgewebes der Cacteen. Zeit. 



fur Naturwiss., 2, pp. 30-80. 

 Cbockeb, W. 1906. Role of Seed-coats in Delayed Germination. Bot. Gaz., 42, pp. 



265-290. 

 Dakbishire, 0. v. 1904. Observations on Mammillaria elongata. Ann. of Bot., 18, 



pp. 375-416. 

 Debet, M. H. 1846. Proliferation d. Fruchtknotens lieferte eine Opuntia Salm- 



Dyckiana. Verhandl. d. Naturhist. Ver. Preuss. Rheinl., 3, 83, 84. 

 Delavaud, M. C. 1858. Inflorescence du Peireskia hleo. Bull. Soc. Bot. de France, 



5, p. 685. 

 Delbrouck, C. 1875. Die Pflanzenstaclieln. Hanstein Botan., Abhandl. 2, pp. 1-119. 

 Engelmann, W. 1887. " Cactaceas of the Boundary," in Botanical Works. Edited 



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 Ganong, W. F. 1894. Beitrage zur Kenntniss der Morphologie und Biologic der 



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 . 1898. The Comparative Morphology of the Embryos and Seedlings of the 



Cactacese. Ann. of Bot., 12, pp. 423-474. 

 Goebel, Kakl. 1886. Zur Entwickelungsgeschichte des Unterstandigen Frucht- 

 knotens. Bot. Zeit, 44, pp. 729-738. 



. 1889. Pflanzenbiologischeschilderungen. I. Kakteen, pp. 67-108. 



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Known as Opuntia. Bull. No. 31, U. S. Depart, of Agricult. 

 Haeeis, J. A. 1905. The Fruit of Opuntia. Bull. Torrey Bot. Club, 32, pp. 531-536. 

 Hildebbandt, F. 1888. Ueber Bildung von Laubsprossen aus Bliithensprossen bei 



Opuntia. Ber. d. deutsch. bot. Gesellsch. 6, pp. 109-112. 

 Katjffmann, N. 1859. Zur Entwickelungs. d. Cactaceenstacheln. Bull. Soc. Imp. 



des Naturalistes de Moscow, 32, part II, pp. 585-603. 

 Lauteebach, C. W. 1889. Untersuchungen iiber Bau und Entwickelungs der Sekret- 



behalter bei des Cacteen. Bot. Centrbl., 37, p. 257. 

 Lloyd, F. E. 1907. Observations on the Flowering Period of Certain Cacti. Plant 



World, 10, pp. 31-39. 



. 1916. Abscission in MiraMlis jalapa. Bot. Gaz., 61, pp. 213-230. 



Meehan, T. 1888. Opuntia Fruits. Gard. Chron., 3, p. 328. 



Noll, F. C. 1872. Zwei Abnormitaten an Cactusfriichten. Ber. d. Senckenbg. 



Gesell., 1872, p. 118. 

 Penzig, 0. 1890. Pflanzenteratologie. Genoa. 

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• . 1890. Flora Brasiliensis, IV, 2. 



SoLEBEDEB, H. 1908. Systematic Anatomy of the Dicotvledons. Engl. Transl., pp. 



406-415. 

 TouMEY, J. W. 1895. Vegetal Dissemination in Opuntia. Bot Gaz., 20, pp. 356-361. 



— . 1898. The Tree Opuntias of the United States. Bot Gaz., 25, pp. 119-124. 



• . 1905. Notes on the Fruits of Some Species of Opuntia. Bull. Torr. Bot. 



Club, 32, pp. 235-239. 

 Wettebwald, X. 1889. Blatt- und Sprossbildung bei Euphorbien und Cacteen. 



Nova Acta Kaiserl. Leopold. Carol., Ak. 53, pp. 379-440. 

 Wolfe, F. A. 1912. Notes of the Anatomy of Opuntia lindheimeri. Plant World, 



15, pp. 294-298. 

 ZuccABiNi, J. G. 1836. Plantarum novarum vel minus cognitarum, etc. Fasc. 



tertius, Cactacege. Abhandl. Muench. Akad., Math, physik. Klasse, 2, 



pp. 599-742. 



