OLITER ON THE STEM OF DICOTYLEDONS. 



307 



fig.) — Scliaelit, H. Dev. Baum, 195. — Jussieu. Elemens de Bot. 

 pp. 49, 52 (figs.) 



Sapindaceae. Eichard. ISTouv. Elemens de Botanique. 1838, 136. 

 — Gaudicliaud. Eecherclies Grenerales, 1841, tab. xiii. — Martius, 

 von. Grclelirte Anzeigen, 1842. 390. — Treviranus. Ueber einige 

 Arten anomalisclien Holzbildung bei Dicotyledonen. Bot. Zeit. 

 1847, 393.— Ann. Nat. Hist. Ser. ii. i. 126. On the origin, &c. 

 of tlie accessory wood-masses, in Paullinia pimiata, Serjania 

 S-ternata, and S. Selloviana. — Gaudicliaud in Guillemin's Archives, 

 ii. 501, PI. 19. — Gaudichaud, Eecherches sur I'Organographie, 

 &c. des Vegetanx, tab. xiii. 1-4, and tab. x\aii. 14-21. — Schleiden. 

 Principles of Botany, 253.— Criiger, H. Bot. Zeit. 1851, 481. On 

 the structure of Paullinia and Serjania ; detailed observations, 

 with figures. — Sehacht, H, Lehrbuch, ii. 57. — Serjania paniculata. 

 Mettenius, G. Einige Beobacht. iiber den Ban der Bignonien. 

 Linnsea, 1847. 582. Three peripherical wood-cords are included 

 within the outer cortical and a liber layer of the central axis. In 

 these cords the centre is occupied by elongated cells with brown 

 contents, surrounded by a few spiral vessels. The central axis pos- 

 sesses a true pith. — S. cuspidata. Jussieu, Ad. de. Monograph des 

 Malpighiacees, p. 110. The branches are acutely triangular ; the 

 angles each occupied by a ligneous bundle, separated from the 

 axial bundle by interposed cortical tissue. 



HiPPOCASTANEAE. — Aesculus. Link, E. H. Icones Anat. Bot. 1837. 

 Ease. i. vii. 6-12.— Henfrey, A. Micr. Diet. ' Wood.' 



Cedbelaceae. — Chloroxylon Swietenia. The medullary rays are very 

 numerous, vertically of small extent, though usually two or three 

 cells in diameter. Tlie vessels traversing a wood of normal Dico- 

 tyledonous character, are of smaU calibre and very minutely 

 dotted. (D.O.) 



Ampelideae. — Vitis. Schultz, C. H. Die Cyklose. Nova Acta, 1841, 

 xxviii. Suppl. ii. tab. xxxii. — Vitis vinifera. B. Mirbel. Elemens 

 de Phys. Veg. tab. xii. 1. — Henfrey, A. Micr. Diet. ' Wood.' 

 Sehacht, H. Der Baum. 200. 



Vitis. (sp. indeter. foliis pedatis- 

 Malacca. Coll. Griffith.) _ The 

 stem, from 3-8ths to § in. in 

 diameter, presents a very unusual 

 develoj)ment of the suberous layer 

 of the bark, which is vertically fis- 

 sured. Some portions are nearly 

 equal in thickness to the wood- 

 zone. In cross-section, as figured, 

 the latter is found to be divided 

 by two opposite, vertically-con- 

 tinuous, plates of comparatively 

 dense tissue, destitute of wide- 

 mouthed vessels, which abound 



