I I 2 
Mottier.—Chondriosomes and the Primordia 
Summary. 
1. Leucoplasts and chloroplasts are derived from granular or rod¬ 
shaped primordia which are morphologically alike and which are per¬ 
manent organs of the cell, with the same rank as the nucleus. These 
primordia multiply by division. Full-grown chloroplasts multiply also by 
division. 
2 . In the cells of Anthoceros , Marchantia , and Pinus , and in the 
tissues of the other higher plants mentioned in the foregoing pages, there 
are present in the groundwork of the cytoplasm granular and rod-shaped 
bodies which do not give rise to either chloroplasts or leucoplasts, and to 
which the name chondriosome is restricted. These chondriosomes multiply 
by division, and they are permanent organs of the cell. 
3 . Chondriosomes, as well as the primordia of leucoplasts and chloro¬ 
plasts, are concerned in the transmission of certain hereditary characteristics. 
4 . The function of chondriosomes in the cell cannot be definitely 
formulated at present. They are probably concerned in certain processes 
of metabolism. 
Literature referred to. 
Cavers, F. ( 1914 ) : Chondriosomes (Mitochondria) and their Significance. New Phyt, vol. 
xiii, 1914, pp. 96-106, 170-80. 
(A complete bibliography prior to 1914 will be found here.) 
Forenbacher, A. ( 1911 ): Die Chondriosomen als Chromatophorenbildner. Ber. der Deutsch. 
bot. Ges., vol. xxix, 1911, pp. 648-60. 
1 . Guilliermond, A. ( 1911 ): Sur les mitochondries des cellules vegetales. Comptes Rendus, 
vol. cliii, 1911, pp. 199-201. 
2 . -( 1911 ) : Sur la formation des chloroleucites aux depens des mitochondries. 
Ibid., pp. 290-2. 
3 . -——-( 1911 ): Sur l’origine des leucoplastes et sur le processus cytologique de 
l’elaboration de l’amidon dans le tubercule de la pomme de terre. Ibid., pp. 1492-4. 
4 . -( 1912 ) : Sur les leucoplastes de Phagus grcindifolius et leur identification 
avec les mitochondries. Ibid., vol. cliv, 1912, pp. 286-8. 
5 . -( 1912 ): Sur les mitochondries des organs sexuels des vegetaux. Ibid., 
pp. 888-91. 
6 . -( 1912 ) : Sur le mode de formation du pigment dans la racine de la carotte. 
Ibid., vol. civ, 1912, pp. 411-14. 
7 . --( 1913 ) : Nouvelles observations sur le chondriosome des champignons. 
Ibid., vol. clvi, 1913, pp. 1781-4. 
8. -( 1913 ) : Sur la formation de l’anthocyane au sein des mitochondries. Ibid., 
pp.1924-6. 
9 . -( 1913 ): Sur le role du chondriome dans l’elaboration des produits de 
reserve des champignons. Ibid., vol. clvii, 1913, pp. 63-5. 
10 . -( 1913 ): Nouvelles recherches cytologiques sur la formation des pigments 
anthocyaniques. Ibid., pp. 1000-2. 
11 . --( 1913 ) : Sur la participation du chondriome des champignon dans l’elabora- 
tion des corpuscules metachromatiques. Anat. Anzeiger, vol. xliv, 1913, pp. 337-42. 
