STANDLEY- — TREES AND SHRUBS OF MEXICO. 231 



Leaves 2 to 3.5 cm. long, very obtuse, short-petiolate ; spikes 1 to 3.5 cm. 

 long; fruit white. The following names are reported, but thej^ may apply to 

 other species: " Visco cuercino," " liga " (Mexico); " ingerto " (Durango) ; 

 " silmo " (Sinaloa). 



52. Phoradendron colipense Trel. Gen. Phorad. 37. pi. 33. 1916. 

 Known only from the type locality, Colipa, Veracruz. 



Leaves oblanceolate-elliptic, very obtuse, 5 to 8 cm. long; spilies 3.5 cm. 

 long. 



It is doubtful whether this and the following species are sufficiently distinct 

 from each other or from /'. ftavesccns (Pursh) Nutt., of the eastern United 

 States. 



53. Phoradendron macrophyllum (Engelm.) Cockerell, Amer. Nat. 34: 293. 

 1900. 



Phoradendron flavcsccns inacrophylliun p]ngelm. ; Rothr. in Wheeler, Rep. 

 U. S. Surv. 100th Merid. 6: 252. 1878. 



Sonora. Arizona, the type from Camp Grant. On Alnus, Celtis, Fraxinus, 

 Jugluns, Platanus, Populus, Salix, etc. 



Leaves 2.5 to 6 cm. long, short-petiolate; spil^es 1.5 to 5 cm, long; fruit 

 white, 4 to 5 mm. in diameter. 



54. Phoradendron cockerellii Trel. Gen. Phorad. 38. i)l. 36. 1916. 

 Chihuahua. New Mexico and western Texas ; type from Silver City, New 



Mexico. On Populus, Salix, and Fraxinus. 



Leaves 3.5 to 5.5 cm. long, ijetiolate ; spikes 1.5 to 5 cm. long ; fruit white. 

 .55. Phoradendron greggii Trel. Gen. Phorad. 36. pi. 22. 1916. 



Coahuila and Nuevo Leon ; type from Rinconada, i\ uevo Leon ; on Acacia and 

 Prosopis. 



Leaves elliptic or broader, 2.5 to 4.5 cm. long, petiolate ; fruit white. 



56. Phoradendron eng-elmanni Trel. Gen. Phorad. 35 pi. 29-31. 1916. 

 Chihuahua. Western Texas ; type from New Braunfels. On Celtis, Quercus, 



Prosopis, etc. 



Leaves obovate, 3 to 5 cm. long, short-petiolate ; fruit white. 



57. Phoradendron thyrsoideum Trel. Gen. Phorad. 36. pi. 33. 1916. 

 Tamaulipas and San Luis PotosI; type from Victoria, Tamauiipas ; on Pro- 

 sopis juliflora and Acacia far)iesiana. 



Leaves obovate-spatvilate, 3 to 5 cm. long, short-petiolate ; fruit waxy white. 

 "Ingerto bianco" (Tamaulipas). 



4. ORYCTANTHUS Eiehl. in Mart. FI. Bras. 5': 87. 1868. 



1. Oryctanthus glaberrimus (Oliver) Eichl. in Mart. Fl. Bras. 5': 89. 1868. 



Loranthiis glaberrimus Oliver, Nat. For. Kjobenhavn Vid. Medd. 1864: 170. 

 1864. 



Known only from Guatulco, the type locality. 



Plants glabrous, the branches compressed ; flowers very small, sunk in the 

 axis of the spike. 



5. STRUTHANTHUS iMart. Flora 13: 102. 1830. 



Plants green, usually glabrous, parasitic upon dicotyledonous plants, the 

 branches terete or compressed ; leaves well developed, opposite ; flowers small, 

 spicate, racemose, or corymbose. 

 Leaves small, 16 mm. long or shorter. 



Branches densely pubescent; flowers cymose-capitate 1. S. microphyllus. 



55268—22 5 



