214 Conard—Fasciation in 
EXPLANATION OF PLATE XIX. 
Fig. 1. Internal bundle system of a small ring-fasciation. Photomicrograph, 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
10. 
magnified about 60 diam. 
2. External bundle system of ring-fasciated stem, being altogether nor- 
mal in structure. Photomicrograph, magnified as Fig. I. 
3- Remnant of vascular bundle in the midst of the pith at the basal end 
of the ring-fasciated region. 
4. Diagram of Ring-fasciated Stem. 
Ep. = epidermis. Ph. = phloem. 
Co. = cortex. Ca. = cambium. 
B. S. = bundle sheath. Xy. = xylem. 
B. F. = bast fibre ring. I. Ph. = internal phloem. 
Med. = pith. 
Capital letters indicate external (normal) bundle system; small letters 
indicate internal (anomalous) system. 
5. Portion (taken about 12 inches from the apex) of a very large ring- 
fasciation. The ring splits above and spreads out, forming a plain fascia- 
tion. Magnified one and one-half times. 
6. Apex of a complete ring-fasciation, showing the internal cavity and 
the crowded leaf rudiments. Natural size. From sketch by Miss M. Mac- 
kenzie. 
LITERATURE. 
. Caspary, R.—Ueber bandartiges Wachsthum, Schriften der Phys.-dkon. 
Gesellsch. zu Kénigsberg, 22 Jhrg., 2 Abth., 1882. p. 4o. 
. Cuboni, G.—Sulla causa della fasciazione nello Spartium junceum e nel 
Sarothamnus scoparius, Boll. d. Soc. Bot. Ital., 1894. p. 281-82. 
. Dammer, U.—Fasciated Roots of Pothos aurea, Gard. Chron., 1886, No. 
C75 EP Tea: 
. de Vries, H.—Over de erfelijkheid der fasciatién, Botanisch Jaarboek, 
Zesde Jhrg., 1894. p. 110 [39]. 
—— —, —Sur un spadice tubuleux du Peperomia maculosa, Archives 
Néerlandaises, vol. 24, 1891. p. 258 ef seg. 
. Ewart, M. F.—On the Leaf-glands of omea paniculata, Annals of Botany, 
vol. ix, June, 1895. p. 284. 
. Gardeners’ Chronicle.—Fasciated Roots [Piper sp.]. December 18, 1886. 
p- 784. 
. Géneau de Lamarliére.—Sur la production experimentale de tiges et d’inflor- 
escences fasciées. Compt. Rend., 1899. I, p. 1601. 
. Kronfeld, M.—Studien zur Teratologieder Gewiachse, Verh. d. Zool.-Bot. 
Gesellsch. zu Wien, 1886. p. 103-122. 
Macfarlane, J. M.—Inheritance of Acquired Characters, Science, vol. v, 
1897. Py 940, 
