104 



PINACEAE 



f itr. 67 (7. Wtddringtonia cupressotdes (L.) EndJ. 1. $ inflorescence. 4/1. 2. Long, 

 section through ovule, showing the micropyle. 61. 3. Micropyle or ovule (long. 

 section), showing 3 pollen grains on the apex of the nucellus. 100 1. 4. Germinating 

 pollen grain on apex of nucellus. 500/1. 5. Pollen tube which has entered the 

 nucellus. 500/1. 6. ,/ inflorescence (twig with sporophylls). 4/r. 7. Sporo- 

 phyll, the outer side (seen from above). 20 1. 8. The same, inner side (seen from 

 below). 20/1. 9. Pollen grain of Pinus. 600 1 . />. Rudimentary prothallium. 

 a. Antheridial cell. vn. Vegetative nucleus. ft. Air chambers. 



(Figs. I and 6-8 from nature; 2-5 from Saxton, Botan. Gay., vol. 48; 9 from 

 Coulter and Chamberlain) 



Plate 19. 



Wi(l(fri?igtoiiia juniperoides (L.) Endl, 

 The Clanwilliam Cypress. 



(For description sec page 101.) 



