Jaeger, 'Missbilld. d. Gewaechse,' p. 78, 79, f. 47. Roeper, 'Enum. Euphorb.,' 1824. p. 45, _Delphinium_.--Schimper, 'Flora,' 1829, pp. 437-8, et 'Mag. fur Pharmacie de Geiger,' 1829-30, pl. iv-vi, text wanting, _Primula_, _Reseda_, _Cheiranthus_.--Engelmann, 'De Antholysi,' 1832.--Valentin, 'Act. Acad. Nat. Cur.,' 1839, p. 225, _Lysimachia_.--Unger, 'Act. Acad. Nat. Cur.,' xxii, 11, 1850, p. 543, t. 5 B, _Primula_.--'Flora (B. Z.)', 1842, p. 369, t. ii, _Trifolium_.--Brongniart, 'Ann. Sc. Nat.,' 1834, ii, p. 308; also 'Archives Mus. d'Hist. Nat.,' 1844, t. iv, p. 43, pl. iv, v, _Primula_.--Reissek, 'Linnaea,' xvii, 1843, _Alliaria_.--Wydler, 'Denkshrift. d. Regensb. Bot. Gesell.,' 1855, iv, s. 77, t. vii, _Alliaria_.--Wigand. 'Grundlegung der Pflanzen Teratol.,' 1850, p. 39, _Turritis_.--Wigand, 'Bot. Untersuchungen,' 1853, p. 23, _Rosa_, _Turritis_, _Crepis_.--Germain de St. Pierre, 'L'lnstitut,' 1853, n. 1051, p. 351.--Rossmann, "Entwicklung der Eiknospen aus dem Fruchtblatte," &c., 'Flora,' 1855, pp. 647 and 705.--Dareste, 'Ann. Sc. Nat.,' 1842, p. 220, _Delphinium_.--Fresenius, 'Mus. Senkenb.,' ii, p. 39, t. iv, f. 9, _Primula_.--Schultz, 'Flora o. d. Bot. Zeit.,' 1834, xvii, p. 121, _Nasturtium_.--Seringe and Heyland, 'Bull. Bot.,' 1-7, _Diplotaxis_.--Clos, 'Mem. Acad. Toulouse,' vi, 1862, _Delphinium_.--Morren, C., 'Bull. Acad. Belg.,' xix, part ii, p. 519, _Primula_.--Caspary, 'Schrift. d. Physik. OEk. Gesell. zu Koenigsberg,' band ii, p. 51, tabs. ii, iii. Fleischer, 'Ueber Missbildungen Verschiedener Cultur Pflanzen.,' &c., Esslingen, 1862. Cramer, 'Bildungsabweich,' p. 68, &c. &c., _Trifolium._--Moquin-Tandon, 'El. Terat. Veg.,' p. 206, _Cortusa_.--Guillard, 'Bull. Soc. Bot. Fr.,' 1857, vol. iv, p. 761, _Stellaria_.--Moelkenboer, 'Tijdschrift v. Natuurl. Geschied.,' 1843, p. 355, t. vi, vii, _Primula_.--Van Tieghem, 'Bull. Soc. Bot. Fr.,' 1865, p, 411, _Tropaeolum_. =Phyllody in accessory organs.=--In addition to the ordinary organs of the plant, what are termed the accessory organs, such as hairs, spines, &c., sometimes become foliaceous. It is not to be wondered at that spines, when they represent the framework of a leaf, become sometimes clothed with cellular tissue, and thus become indeed true leaves. This happens occasionally in _Berberis;_ a similar thing occurs in the stipules of some _Leguminosae_; the scales of some begonias; the tendrils of _Bignonia_, _Cobaea_, &c. The presence of two small green laminae on the outer side of the two posterior stamens in _Antirrhinum majus_ has also been met with. The adventitious organs appeared as if they were developments from the thalamus--a kind of foliaceous disc, in fact. [Illustration: FIG. 149.--Leafy petal of _Epilobium_.] [Illustration: FIG. 150.--Chloranthy, &c. _Epilobium hirsutum_.]