310 OJBIGINAL AETICLES, 



On liber of. — Prunus (Avium) . Wigand. iiber die Deorganisation 

 der Pflanzenzelle. Pringsh. Jalirb. iii. 115. The first section of 

 this paper relates, principally, to the transformation of certain 

 tissues both of the wood and bark into cherry-gum, — a compound 

 of gum arable and cerasin. — Sosa. Meyen, P. J. P. Auat. und 

 Phys. d. Grewachse. 1836, tab. iii. 11. — Buhus. Kieser. Mem. sur 

 r organisation des plantes, 181^!. tab. 16. — Schultz, C. H. Die 

 Cyklose. Nova Acta, ISil. xviii. Suppl. ii. tab. xxv. 



Caltcajs^theae. — Calycanthus. Mirbel, M. Sur I'organisation de la 

 tige d'un tres-vieux G. Jioriclus. Ann. Sc. Nat. 1828. 14. 367. 

 (With 1 pi.) Noting the occurrence of fibro-vascular bundles 

 occupying the angles of the stem. Each of these fascicles pos- 

 sesses a proper cortical envelope, superimposed woody layers 

 (thicker towards the axis of the stem), medullary rays and pith. 

 — Treviranus, L. C. Phys. d. Gewachse, 1835. i. tab. 1. 10. — Link 

 in Proi'iep's, N. Notiz. xxxiv. Plora, 1845, 558. Observations on 

 the structure of the accessory axes of G. floridus. — Treviranus. 

 Ueber einige Arten anomalischer Holzbildung bei Dicotyle- 

 donen. Bot. Zeit. 1847, 379. On the formation of vascular 

 bundles in the bark, and their coiuiection with the leaves. Vide 

 also Henfrey, Ann. N. Hist. Ser. ii. 1. 125. — Mettenius, Gr. 

 Einige Beobacht. iiber de Bau der Bignonien. Linnsea, 1847. 

 580. Referring to the peripherical woody centres occurring in 

 Calycanthaceae. Their minute structure is detailed in Galycan- 

 thus floridus, in which they are found in yearling stems as four 

 liber-bundles isolated in the cortical parenchyma. Each bundle 

 towards the axis of the stem is accompanied by a formation of 

 spiral vessels, and, within these, by wood-cells and dotted ves- 

 sels. In stems of five years old the liber bvmdles are found 

 unaltered, while the wood has laterally extended itself to about 

 twice its size in the first year. Small bast-bundles are distributed 

 round the central woody axis. — Graudichaud. Gruillemin's Ar- 

 chives, ii. 493. Origin of accessory wood bundles. — Lindley, J. 

 Introd. Botany, i. 209. On excentrical woody axes. — Lindley, J. 

 Veg. Kingdom, 541.— Hartig, Th. Bot. Zeit. 1859. 109. Cortical 

 vascular bundles of. 



Chetsobalakeae. Criiger, H. Westindische Pragmente. Bot. Zeit. 

 1857, 281, with pi. On the structure of the siliceous bark 

 of a Moquilea (Caraipa augustifoUa), called Gauto or Gauta. 

 Also, p. 298, on wood of same. The vessels are irregu- 

 larly scattered through a wood of the usual Dicotyledonous 

 character, excepting that, at short intervals, the prosenchyma is 

 interrupted by very mimerous vertical bars of thin- walled cells, 

 transverse to radius ; these are tolerably continuous concentrically, 

 though often broken by the openings of the vessels. The remark- 

 able siliceous bark (' el cauto') of this (?) tree is fully described 

 by Criiger.— See also II. v. Mohl. Bot. Zeit. 1801, 211, and 

 Wicke, p. 97. 



