973 
the Inflorescences and Flowers of Ephedra . 
side. In E. fragilis this minute bundle passes out into the adaxial 
1 perianth 5 member (Text-fig. XX. 3, 4), and rarely this may even receive two 
bundles, but the other member appears to be always without a vascular 
Text-fig. xix. Longitudinal section through, two synangia of E. nehrodensis , showing trans- 
fusion tissue in septa. 
Text-fig. xx . 1 Diagram of male flower of E. fragilis . 1 = Longitudinal section ; 2, 3, 4 = 
transverse sections from levels 2, 3, 4 in Diagram 1. The two bundles are seen to pass up unbranched 
to the level of origin of the synangia. The third bundle supplying the perianth is seen in 3, and 
the fusion of the base of the flower-stalk with the bract in 4. Higher up than 2 the perianth 
segments become separate from one another. 2, 3, 4 x 23. 
supply. 2 In all the other species the leaf-like appendages receive no 
bundles, and the minute third bundle dies out, while the two larger portions 
1 This figure is adapted from drawings kindly lent by Dr. Benson of Royal Holloway College. 
2 As in Welwitschia , but in Gnctum these structures have a vascular supply. 
