168 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 31 



Fig. 1-4. Griffithsia pacifica Kylin. Fig. 1, upper part of a plant, X 10; 

 Fig. 2, A young spermatangial node, X 160; Fig. 3. A young tetra- 

 sporangial node, X 160; Fig. 4, A mature tetrasporangial branch 

 showing involucral cells, X 150 (after Kylin). 



Fig. 5-7. Griffithsia tenuis Ag. Fig. 5, Upper part of an axis showing whorled 

 hairs, X 40; Fig. 6, A tetrasporangial node, X 170. Fig. 7, A 

 pedicellate spermatangial cluster, X 400 (after Abbott). 



