322 OBIGES'AL AETICLES. 



rectiflora. Bull. Soe. Bot. iii. 24:2.— Clatidestina. Chatin, A., Bull. 

 Soc. Bot. iii. 242. — Lathraea. Pitra, A. iiber d. Anheftuugsweise 

 eiaiger phanerog. Para-siteu. Bot. Zeit. 1861, 64, with figures. — - 

 Fhilipaea. Pitra. A. iiber d. Anheftungsweise einiger plianerog. 

 Parasiten. Bot. Zeit. 1S61, 72. 



Saltadobaceae. — Salradora persica. The arrangement of the wood- 

 tissues is remarkable, and deserves examination. (D. 0.) 



PLVMBAGrsTAE. Ebel, AV. De Armeriae genere Prodromus, 1840. 

 — Armeria, Plumbago. De eaide, p. 6 — Plumbago. — Bameoud, F. 

 M. Sur le Developpement des Plantaginees et des Plumbaginees, 

 Paris, 1844, 26. tab. ii. 26. — also Entnickelung und den Bau der. 

 Compt. Eendus, 1844, Juli 30. — Oliver, D. Observations on the 

 Structure of the Stem in certain species of the jS^atural Orders 

 Carvophyllaceae and Plumbagineae, Liroi. Trans, xxii. 292, with 

 figures. The wood of Armeria maritima, Acantholimon diapen- 

 sioides, and perhaps Statice arhorea, is destitute of medullary 

 rays. In the latter species the pith is traversed by cords of thick- 

 waUed tissue. The arrangement of the wood in species of Acan- 

 tholimon is described. In A. diapensioides and Statice arhorea, 

 apparently minute intercellular cavities were observed in the 

 wood-prosenchyma. — Statice. Hartig. Th. Bot. Zeit. 1859, 96. 

 Structure of the wood, and absence of medullary rays. 



Pla^ttagentlae. Barneoud, P. M. Sur le Developpement, &c., des 

 Phmtaginees. Paris, 1844, p. 14, tab. i. 2S. — Flantago. Endlicher 

 and Unger. Grrundziige d. Botanik, 101. Vascular bundles 

 scattered thi'ough parenchyma of stem. 



PoLTGOXACEAE.^ — Fohjffonum.' Mohl, H. v. Ueber d. Bau * * der 

 Eanken-und Schlingpflanzen. Tubingen, 1827, § 75. — Link,H. F. 

 Icones Anatomico-Botanicae, 1837. Fasc. i. tab. iv. 5-10. — Uti- 

 mex, Rheum. Schultz, C. H. Die Cyklose, JSTova Acta. 1841, x-viii. 

 Suppl. ii. tab. XV. 



jS'rcTAGLN'EAE. Meyer, E. H. F. De Houttuynia, &c. 1827, p. 40.— 

 Unger. Fr. TJeber d. Bau und d. "Wachsthum des Dicotyledoneu- 

 stammes.* St. Petersburg, 1840, with plates. Link, Jahresber. 

 1840. In Mirahilis, the author distinguishes a double vas- 

 cular system — an inner and an outer. The former is simple, 

 consisting of a vascular zone and its included central vascular 

 bundles which pass into the leaves. The latter is made up of several 

 superimposed vascular belts, formed independently of each other 

 and of the former, and connected only by anastomosis. — Martins, 

 von ; Gelehrte Anzeigen, 1842, 391. — Liudley, J. Teg. Kingdom, 

 507.— Schleiden, Principles of Botany, 251.-^Heufrey, Mic. Diet. 

 'Wood,' on Pisonia. — Boerhaavia. Lindley, J. Observations on 



* In Section viii. of this treatise, based upon the investigation of wood-structure 

 in Salix, Unger discusses the relations of the inner and outer series of vascular 

 bundles in woody Dicotyledons, and their relation to the svstem of herbaceous 

 rpecies, &c. 



