EXPLANATION OF PLATES 165 



Plate 6. MORPHOLOGY of spikes, a. Phoradendron Libocedri, one 

 of the Pauciflorae, showing an entire 1-jointed 2-flowered spike, with 

 parted fruiting sepals, b. Plwradendron villosum, one of the Pluri- 

 seriales, showing one joint of a 3- jointed spike with flowers in several 

 series, with parted fruiting sepals. Both in fruit, and x 10. 



Plate 7. MORPHOLOGY of flowers, a. Phoradendron macrophyl- 

 lum, a joint of a staminate spike with 2- and 3-merous flowers (Ari- 

 zona, Blumer). b. P. villosum, an entire pistillate spike with 3- and 

 5-merous flowers (California, Hedgcock). c. P. macrophyllum, a 

 joint of a staminate spike showing 3-, 4- and 5-merous flowers (Ari- 

 zona, Blumer) . All x 10. 



Plate 8. FRUITING CALYX with inflexed sepals, a. Phoradendron 

 californicum (Arizona, Miss Cory), b. P. nervosum (Mexico, Pur- 

 pus). Both x 10. 



Plate 9. FRUITING CALYX with parted sepals, a. Phoradendron 

 macrophyllum (Arizona, Blumer). b. P. Zuloagae (Venezuela, Zu- 

 loaga). c. P. Coryae (Arizona, Miss Cory). All x 10. 



Plate 10. ENDOCARP. a. Phoradendron Coryae (Arizona, Miss 

 Cory), b. P. villosum (California, Butler), c. P. macrophyllum 

 (Arizona, Blumer). All x 10. 



Plate 11. PHORADENDRON CALIFORNICUM. a. Four bits of the type 

 (Sierra Nevada, Nuttall, 1836) ; Sonora (Palmer, 1065). b. Fruiting 

 plant (California, Jones, 11718). 



Plate 12. PHORADENDRON CALIFORNICUM NANUM. Type (Arizona, 

 Griffiths and Thornber, 205). 



Plate 13. PHORADENDRON CALIFORNICUM DISTANS. a. The type 

 (Arizona, Pringle, 1881). b. Fruiting branch (Nevada, Kennedy and 

 Goodding, 57). 



Plate 14. PHORADENDRON JUNIPERINUM. a. The type (New Mexico, 

 Fendler, 281). b. Type of f. NANA (Arizona, Sitgreaves, 1851). 



Plate 15. a. PHORADENDRON LIBOCEDRI. Type (California, Lem- 

 mon, 1875). b. P. LIGATUM. Oregon (Cusick, 2637). 



Plate 16. a. PHORADENDRON MINUTIFOLIUM. Type (Mexico, Schiede, 

 402) ; photographed by permission at Dahlem. b. P. SALTILLENSE. 

 Type (Mexico, Gregg, 399). 



Plate 17. PHORADENDRON CAPITELLATUM. Type (New Mexico, 

 Wright, 1787) ; photographed by permission at the New York Botan- 

 ical Garden. 



