Observations on South African Plants. 41 



B. Column (magnified). 



C. Petal (magnified), 



D. Sepal (magnified). 



Fig. 2. — Grassula canescens, Schult. 



A. Outline of petal from the back with a stamen (magnified). 

 k = epipetalous knob. 



B. Outline of petal, front view (magnified). k = epipetalous knob, 

 l = ligula. 



0. Median longitudinal section of a petal (magnified). 



D. Gland from the base of a carpel (magnified). 



E. Mower (magnified). 



F. Flower seen from above (magnified), e = entrance to the flower, 

 k = an epipetalous knob, p = petal, s = sepal. 



G. Flower with front portion removed (magnified), gl = nectar- 

 gland at the base of a carpel. 



H. Diagram of a flower, s = sepal, p = petal, st = stamen, c = 

 carpel, gl = nectar-gland at the base of a carpel. 



Plate II. — 



Mesembrianthemum angalatum, Thunb. 



A. Ground plan of a flowering shoot, being a " dichasium mit 

 wickeltendenz," I, 11 = flowers in which size, position, and order 

 of appearance of the sepals are indicated. «, /3, «', /3' &c.=prophylls. 

 The flowers on the s'ympodium are connected by an interrupted 

 line. Flowers and leaves on the main sympodium are represented 

 by thick black lines, those on the ''free" branches are represented 

 by thin double lines, those on accessory shoots by interrupted lines, 

 <r = place in which the second sympodial axis of a "free " shoot is 

 formed. 



B. Very young flower (magnified), seen from above, S = one of 

 the sepals which have been cut through, pr = one of the 5 primordia 

 which give rise to the stamens and staminodes, g = protuberance on 

 which the 5 carpels take their origin. 



C. A flower in a subsequent stage showing the differentiation of 

 the staminodes, st', and stamens, st ; these structures have not been 

 all drawn. 



D. Sketch of part of an inflorescence. Lettering and numbering 

 the same as in A. 



E. Sketch of a small portion of the inflorescence of M. cor- 

 difolium. 



