14 Miss Robertson, Notes on the Anatomy of Macrozamia etc. 



Description of Plate illustrating Miss A. Kobertson's 

 paper on Macrozamia heteromera. 



Fig. 1. Hair from leaf -base, e, surface of epidermis; n, nucleus, 

 (x 20 circa.') 



Fig. 2 a, b, c. Mesophyll cells of leaf to shew lignified and pitted 

 connecting areas in surface and section; c, also shews the lignified 

 framework which is exhibited by some of the cells. Drawn from 

 transverse sections of pinnae stained with gentian violet and eosin 

 in oil of cloves, (x 250 circa.) 



Fig. 3. A fibre with thick, stratified, pitted walls, from the trans- 

 verse section of a root, where it occurred between the primary and 

 secondary phloem, (x 250 circa.) 



Fig. 4. Two pinnae of the most characteristic forms (nat. size). 

 (Simple and twice-forked pinnae also occur.) 



Fig. 5 a, b. Lignified and pitted cells of ground tissue of leaf 

 rachis; a, in transverse section, b, in longitudinal section, (x 250 

 circa.) 



Fig. 6. Diagrammatic sketch of the surface exposed by cutting 

 the base of the stem in half longitudinally. (■§ nat. diam. circa.) 

 m. b., anastomosing system of medullary bundles and mucilage canals ; 

 v. t 1} v. t 2 , v. t s , and v. t i} concentric vascular zones; pd., patches of 

 tissue excised by anomalous periderm, 18 of which are shewn; 

 l.t., leaf traces which by the growth of the stem have been gradually 

 forced to point downwards. 



