184 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 17 



PLATE 6 



Fig. 1. Pterocladia caloc/lossoldes (Howe) Dawson. A branch- 



let bearing unilocular cystocarps, from D. 8593, Isla 

 Guadalupe, Baja Calif. X 18. 



Fig. 2. Pterocladia parva Dawson. One of the smaller, free, 



suberect branches of a plant from the tvpe collection, 

 D. 425, San Felipe, Baja Calif. X 8.3. 



Figs. 3-5. GclidieUa ligulaia Dawson, from the type collection, D. 

 6808, Cabeza Ballena, Baja Calif. Fig. 3. A young 

 plant with developing ligulate blades. X 4.6. Fig. 4. 

 Transectional diagram of a blade to show central axial 

 filament and the group of pericentral cells. X 46. Fig. 5. 

 Tip of an old ligule showing deciduous branchlets. 

 X 5.5. 



Fig. 6. Pikea californica Harvev. Transection of a mature 



part of D. 1302, Punta Baja, Baja Calif. X 46. 



Fig. 7. Lcptocladia laxa Taylor. Transection of a mature part 



of the tvpe specimen, Tavlor 603-34, Isla Magdalena, 

 Baja Calif. X 46. ' 



Fig. 8. Leptocladia bint/hamiae J. Ag. Transection of a mature 



part of D. 1181, Punta Baja, Baja Calif. X 46. 



