324 
Arber . — The Leaf Structure of the Iridaceae , 
Leaves oi Crocoid 
68,0 
Crocus Idmasiniarms (S(q) Ctogus vemus Crocus Tomasinianus ^5^ 
bundle ; g ± and g 2 , grooves ; lac., lacuna.) Figs. 56 a-i, Crocus Tomasiniatius , Herb. ; Figs. 56 a-d, 
sections from microtome series through transition from sheath to limb in first foliage leaf of seedling 
( x 47) ; Figs. 56 e-i, series of transverse sections through leaf of mature plant from near base 
upwards, not including sheath (x 23) ; Figs. 56 E-H, basal region ; Fig. 56 1, higher up. Fig. 57, 
Crocus vernus , All.; Fig. 57 A, transverse section at level corresponding to Fig. 56 H; Figs. 57 b 
and c, transverse section near apex ( x 14). Fig. 58, Marrubium velutinum , Sibth. et Sm. (Labiatae), 
transverse section petiole ( x 14). Fig. 59, Crocus carpetanus , Boiss. et Reut., transverse section leaf 
limb ( x 23). Fig. 60, Syringodea bicolor , Baker, transverse section leaf limb ( x 23). Figs. 61 a-d, 
Romulea Bulbocodium, Sebast. et Mauri, series of transverse sections through leaf ( x 23). Fig. 62, 
R. Columnae, Sebast. et Mauri, transverse section just at top of sheath ( x 23). Fig. 63, R. rosea, 
Eckl. ; Fig. 63 A, transverse section just at top of sheath ; Fig. 63 B, transverse section limb (x 23). 
Fig. 64, R. crocifolia, Vis. ; Fig. 64 a, transverse section leaf limb ; Fig. 64 b, transverse section close 
to apex ( x 23). Figs. 65 a-e, Galaxia gra 7 ninea, Thunb., series of transverse sections from sheathing 
base to apex; possibly 65 d and e are from a different leaf (x 23). Fig. 66, Galaxia ovata , 
Thunb., transverse section limb of leaf ( x 14). 
