86 I. M. JOHNSTON 



slope of Ontario Pk. Common throughout the Transition Zone. It becomes 

 a low dense shrub, scarcely over a meter in height, near its upper limit. 

 Castanopsis sempervirens (Kell.) Dudley. Common from the upper part of the 

 Transition Zone to Baldy Summit. The plant blooms in August during which 

 time one is nearly sickened by its odor. (No. 1541.) 



LORANTHACE.E 



Arceuthobium campylopodum Engelm. On Pinus Lamber liana at 7500 ft. alt. in 



Coldwater Fork Lytle Creek, and on Pinus ponderosa at 6500 ft. alt. in Prairie 



Fork. (Nos. 1688, 1720.) 

 Phoradendron libocedri Howell. On Libocedrus decurrens at 4700 ft. alt. in Prairie 



Fork and at 6500 ft. alt. in North Fork Lytle Creek. (No. 1718.) 

 Phoradendron villosum Nutt. On Quercus chrysolepis and occasionally Q. Wisli- 



zeni. (No. 1719.) 

 Phoradendron paucifiorwm Torr. The common mistletoe in the pine belt, the 



only one attacking Abies concolor. So common is the plant below 7500 ft. 



alt., that hardly a fir can be found that is left unpreyed upon. (No. 1622.) 



URTTCACEJE 



Urtica holosericea Nutt. Abundant in the valleys, but only occasional in the 

 Lower Transition Zone. We were surprised to find it abundant at 8000 ft. 

 alt. in the Upper Transition Zone at the Old Gold Ridge Mine. (No. 1605.) 



POLYGONACE.E 



Oxytheca caryophylloides Parry. Under the pines at Baldy Lookout, alt. 6000 ft., 

 Lower Transition Zone. (No. 1259.) 



Oxytheca Parishii Parry. Lower Transition Zone on both sides of the mountain; 

 not common. (No. 1487.) 



Eriogonum molestum Wats. var. Davidsonii (Greene) Jeps. Common in open 

 sunny places in the Transition Zone. (Nos. 1583, 1406.) 



Eriogonum nudum Dougl. Occasional on dry canon sides throughout the Transi- 

 tion Zone. Flowers in late August. (Nos. 1588, 1699, 1702.) 



Eriogonum elongatum Benth. Collected in the pine belt at 5250 ft. alt. in San An- 

 tonio Canon and at 5000 ft. alt. in Prairie Fork. Common at lower altitudes. 

 (No. 1716.) 



Eriogonum fasciculatum Benth. var. polifolium (Benth.) T. & G. On sunny canon 

 sides throughout the Transition Zone. (No. 1569.) / 



Eriogonum Wrightii Torr. var. subscaposum Wats. Frequent on gravelly canon 

 floors and on exposed ridges in the Upper Transition and lower parts of the 

 Canadian Zone. Blooms during the last of August. (Nos. 1544, 1581.) 



Eriogonum saxatile Wats. A common plant in the Upper Transition and Ca- 

 nadian Zones. A form of this species with a dark wine-colored calyx occurs 

 on Baldy and Telegraph Pk. Summits. The only difference is in the color, 

 and that was found to grade into the pale greenish yellow of the common 

 form. (Nos. 1382, 1463, 1473, 1546, 1572.) 



