326 Oliver. — On Sar codes sanguined , Torr. 
Figs. 46 and 47. Transverse sections of the stem taken respectively 6 cm. and 
l8| cm. from the base. The distribution of the vascular bundles in a ring is shown, 
together with those passing, out into the leaves (and in Fig. 47 into the axillary 
flower-stalks). The irregularity of the peripheral outline is due to the insertion of 
the closely imbricating leaves, c, cortex; f b, groups of bundles passing into the 
flower-stalks ; l b, bundles passing into the leaves ; p, pith ; v r , ring of vascular 
bundles. (Fig. 46, natural size ; 47, 2/1.) 
Fig. 48. Enlarged view of a small portion of the ring of vascular bundles, and 
of the clusters of bundles passing out to the leaves (bracts) and flower-stalks. 
c , cortex; fb, bundles to flower-stalk ; l b, bundles to leaf ; pith ; ph> phloem ; 
xylem. (25/1.) 
Fig. 49. A small portion of the vascular ring seen under a high power of the 
microscope. The arrow points towards the centre of the stem, c, cortex ; par , 
parenchyma; ph , phloem; px, proto-xylem; x, xylem. (Enlarged.) 
Fig. 50, a, b, c, d, and e. Series of leaves showing transition from one form to 
another as seen from the outer (under) face, a , from the base of the stem; 
b and c, from the thick bulb-like portion ; d, bract subtending an expanded 
flower ; e, bract subtending an unopened bud. (Natural size.) 
Fig. 51. Margin of a bract, showing the glands as seen under a simple micro- 
scope. 
Fig. 52. A single gland in median longitudinal section, c, cuticle of epidermis. 
(Much enlarged.) 
