1 14 Oliver . — On the S true hire, Development , 
aborted posterior stamen if it were present); blue to the carpels, loc., fully- 
developed posterior loculus ; red. /., reduced anterior loculus ; r., rudimentary 
ovule in the reduced loculus {cf. Fig. 43). 
Fig. 46. Outline of embryo and suspensor from a young seed, slightly older than 
that given in Fig. 36. cot., cotyledons ; sp., suspensor. 
Fig. 47. Median longitudinal section through the apex of radicle, of about same 
age as that in Fig. 46. e., epidermis; d. c., dermato-calyptrogenic layer; pb ., 
periblem ; pi ., plerome ; sp., suspensor. 
Fig. 48. The ripe seed in situ, ap., pocket-like outgrowth of testa, in which is 
inserted the appendage, c 3 ; syn. tub., synergidal tubercle. The reduced loculus 
is represented by a dotted line. Nat. size. 
Fig. 49. Transverse section of a floating stem, cor., cortex ; ens., endodermis ; 
ep ., epidermis; i., intercellular spaces; ph., phloem ; v., vessels. 70/1. 
Fig. 50. Transverse section of submerged part of stem, showing larger inter- 
cellular spaces. References as in Fig. 49. 70/1. 
Fig. 51. Transverse section of the axial-cylinder of the stem, ens., endodermis; 
i. s., intercellular spaces in the ‘ pith,’ due to breaking down of vessels ; ph., phloem ; 
s. t., sieve-tubes ; v., vessels of xylem. 120/1. 
Fig. 52. Transverse section of peripheral part of cortex from a node, showing 
the thick-walled cortical-cells, with intercellular spaces (i. s.) between, c. b., meri- 
stem formed from sub-epidermal layer ; ep., epidermis ; gl., quadrifid gland. 240/1. 
Fig- 53- Transverse section of an adventitious root, showing the large radially- 
arranged intercellular spaces. Several of the radial rows of cortical cells have 
collapsed, and are represented merely as lines. References as in Fig. 49. 7 0 / 1 - 
Fig. 54. Transverse section of the axial cylinder of an adventitious root ; it is 
essentially tetrarch. ens., endodermis ; ph., phloem ; vv., vessels of xylem. 240/1. 
Fig. 55. Longitudinal section of a sieve-tube from the stem, c c., companion 
cell; s. k , schlauch-kopf ; s.p., sieve-plate. Much enlarged. 
Fig. 56. Similar section of one of the outer obliterated sieve-tubes, c. p., callus- 
plate. 
Fig. 57. Diagrammatic transverse section at a node, showing the entrance of 
leaf-bundles. A and B, groups of anastomosing vessels ; adv. rt ., adventitious 
roots ; /. tr., united bundle of leaf traversing the cortex; pet., petiole. 
Fig. 58. Vertical section through the edge of a floating leaf to show a water- 
gland. e ., epithem ; v. b. e., ending of vascular-bundle in the gland ; w.p., water- 
pore. 
Fig. 59. The water-pore, w.p., seen from above. 
Fig. 60. Epidermis of upper, side of floating leaf, showing stomata, st ., and one 
eight-celled gland, gl. The dotted lines below gl. indicate the walls of the 
epidermal cells seen through. 
Fig. 60 a. Epidermis of lower side, with four-celled glands, gl. , and the pedicels 
of glands which have fallen away, gl 1 . 
Fig. 61. Eight-celled gland from floating leaf, drawn to larger scale. 
Fig. 62. A form of stomate occasionally met with at the edge of the leaf, in the 
immediate neighbourhood of a water-gland. 
Fig. 63 a. Outline of submerged leaf. Nat. size. 
