180 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
1. Phoradendron juniperinum Engelm. Mem. Amer. Acad. n. ser. 4: 58. 1849. 
JUNIPER MISTLETOE, 
Tyre LocaLiry: “Parasitic on the two kinds of shrub cedar (Juniperus) which 
grow on the hills and elevated plains about Santa Fe, and on no other tree.”” Type 
collected by Fendler (no. 281). 
Rance: Oregon and California to Colorado and Texas, southward into Mexico. 
New Mexico: Coolidge; Santa Fe; Canjilon; Magdalena; Mogollon Mountains; 
Burro Mountains; Fort Bayard; White Mountains; Queen; Albuquerque; mountains 
west of San Antonio; Cedar Hill; Tunitcha Mountains; Carrizo Mountains; Tierra 
Amarilla, On species of Juniperus. 
The berries are handsome, but the plant is not suitable for decorative purposes 
because of the lack of leaves. ‘ 
2. Phoradendron bolleanum (Seem.) Eichl. in Mart. Fl. Bras. 57: 134. 1868. 
Viscum bolleanum Seem. Bot. Voy. Herald 295. pl. 63, 1856. 
Phoradendron pauciflorum Torr. U.S. Rep. Expl. Miss. Pacif. 4: 134. 1856. 
TyPE LocaLity: “Sierra Madre,’’ Mexico. 
RanGE: California to southern New Mexico, south into Mexico, 
New Mexico: Carrizalillo Mountains; San Luis Mountains; near Dog Spring. On 
species of Juniperus. 
8. Phoradendron orbiculatum Engelm. Mem. Amer, Acad. n. ser, 4: 59. 1849. 
Phoradendron flavescens orbiculatum Engelm. Bost. Journ. Nat. Hist. 6: 212. 1850, 
Typr LocaLity: ‘‘On different species of Quercus; on Q. nigra, sterile hills of 
Arkansas (Engelm.); on several oaks, San Felipe, Texas (Lindheimer).”’ 
Rance: New Jersey to Missouri, Texas, and Arizona. 
New Mexico: Fort Bayard; Berendo Creek; Dona Ana and Organ mountains; 
San Luis Mountains; Dog Spring; Magdalena; Guadalupe Mountains, Usually on 
oaks, 
This species, so far as we have seen it, is found upon nothing but oaks, It differs 
from the following species chiefly in the different form of its leaves, brighter green 
color, smaller size, and more abundant pubescence. It occurs, as do its hosts, only 
in the mountains and foothills, never coming down into the valleys, Two of our 
specimens, one fromthe Organ Mountains and one from Berendo Creek, have nar- 
rower, lanceolate or elliptic, acutish leaves, Possibly they represent a different 
species. 
4. Phoradendron macrophyllum (Engelm.) Cockerell, Amer. Nat. 34: 293, 1900. 
Phoradendron flavescens macrophyllum Engelm. in Wheeler, Rep. U. 8. Surv. 100th 
Merid. 6: 252. 1878. 
Type Loca.ity: ‘‘They grow on soft woods (Ash, Willow, Poplar, Sycamore, and 
Sapindus) on the Gila and Benita Rivers, and extend into Southern California,”’ 
Rance: Western Texas to Arizona and California, 
New Mexico: Mangas Springs; Silver City; Rincon; Mesilla Valley, On various 
trees and shrubs. 
The species is very abundant in the southern and southwestern parts of the State, 
especially in the Rio Grande Valley, growing chiefly on the valley cottonwood (Popu- 
lus wislizeni), although it has been found on the tornillo and on cultivated plums. 
_So heavily loaded are the cottonwood trees at times that they appear to have as dense 
foliage in winter asin summer, Of course the trees soon succumb to such exhaustive 
attacks by the pest. The Spanish name is ‘‘muérdago.”’ 
This is the species preferred for commercial purposes, It is superior to P. orbicu- 
latum because of its larger size, more abundant, larger berries, and generally hand- 
somer appearance. 
