458 



INTRODUCTION TO CBTPTOGAMIC BOTANY. 



Trichomanis (Fig. 94, a) is a -well-known indigenous species, 

 and forms a transition to the next group by its fleshy subter- 

 raneous involucre. 



13. Geocaltce^, Nees. 



Fruit immersed in a branchlet, or the saccate tip of the 

 stem which is often fleshy ; perianth wanting or confluent with 

 the torus ; leaves succubous. 



503. We come now to the division with succubous leaves. 

 We have just had in Calypogeia a direct transition, in the 

 absence of a perianth and the subterraneous involucre. All the 

 species belong to the southern regions, or to the warmer parts of 

 Europe, except Geocalyx contortuplicatus, which comes from 

 St. Domingo, Oeocalyx graveolens, remarkable for its dis- 



m 



i0) 





^6&7 



TV 



-v-'??* 

 ^I& 



^Si 



■■i-miQ 



Fig. 97. 



a. Saccogyna cmstralis, tissue of leaves and section of hypogfeons 

 torus, showing the involucre above. The latter from the Flora of New 

 Zealand. More or less magnified. 



b. Saccogyna viticulosa. Plant nat. size, with torus and involucre. 



c. Plagiochila Slephensoniana, perianth and single leaf, magnified. 

 From Flora of New Zealand. 



agreeable smell, which ascends as high as Pomerania and 

 Sweden, and Saccogyna viticulosa, which is found in Great 

 Britain. Saccogyna australis agrees closely with this ; but 



