EXPLANATION OF PLATES 
PLATE VII 
as = air-space ; vr = vascular ring ; p = pith ; c = cortex ; we = water-cell ; ^ 2 = secondary 
ground-tissue. 
Euphorbia virosa. 
Fig. 1. Trans, sect, vascular cylinder near stem-apex x5 ; 2, trans. sect, mature stern 
x 1 ; 3, trans. sect, of air-cavity in Fig. 1 x 150 ; 4 and 5, long. sect, vascular cylinder of 
mature stem x 1. 
Aloe dichotoma. 
Fig. 6. Trans, sect, young primary ground-tissue of stem x 150; 7, trans. sect, older 
primary ground-tissue of stem x 70 ; 8, trans. sect, young secondary ground-tissue of 
stem x 100. 
PLATE VIII 
A. 1, portion of plant x 1 ; 2, capitulum x 2 ; 3, disc floret with stigmas emerging x 4; 
4, two anthers x 5 ; 5, achene ; 6, style and stigma x 8. 
B. 1, portion of plant x 1 ; 2, flower with pedicel and bracts x 4 ; 3, jjart of corolla x 4 ; 
4, one petal flattened to shew outline x 4 ; 5, column and coronal scales x 30 ; 6, outer view 
of two coronal scales x 40; 7, inner view of two coronal scales x 40; 8, staminal column 
x 30; 9, apex of style x 30 ; 10, one stamen (seen from inside) shewing position of pollinia 
x 50 ; 11, pollinia x 50. 
C. 1, portion of plantxl; 2, corolla opened outxl; 3, outer coronal lobe (a simple 
scale) ; 4, inner coronal lobe (a two-horned scale) ; 5, pollinia x 10. 
PLATE IX 
A. 1, sketch of a branch, nat. size; 2, flower; 3, pedicel with bracteoles; 4, sepal; 
5, corolla — all the latter x 3 ; 6, stamen, side view ; 7, ditto, back view — x 5 ; 8, gynaeceum 
x 4 ; 9, leaf, back view x 6. 
B. 1, sketch of a branchlet, nat. size; 2, flowerx2; 3, pedicel and bracteoles x 3 ; 
4, sepal x 4; 5, corolla x 2 ; 6, anther, side view x 10 ; 7, ditto, back view ; 8, gynaeceum x 5 ; 
9, leaf x 4. 
