FLORA OF THE SAN ANTONIO MOUNTAINS 81 



Muhlenbergia calif ornicaVa&ey. Moist ground on a sunny cafionside, Upper Tran- 

 sition Zone, in Coldwater Fork Lytle Creek, alt. 7000 ft. Common in the 

 chaparral belt, especially in rock crevices wet by seepage. (No. 1629.) 



Muhlenbergia squarro&a (Trin.)Rydb. Wet ground in the Upper Transition Zone. 

 Icehouse Canon, alt. 6500 ft. Upper San Antonio Canon, alt. 7350 ft. Cold- 

 water Fork Lytle Creek, alt. 7000 ft. (Nos. 1506, 1628.) 



Epicampes rigens Benth. On the lower edge of the Transition Zone in Prairie 

 Fork, alt. 4750 ft. 



Agrostis exarata Trin. Occasional along streams in the chaparral belt from which 

 it ascends into the lower part of the Transition Zone. 5500 ft. alt. in Upper 

 San Antonio Canon. (No. 1509.) 



Agrostis Rossae Vasey. Springy ground in the Upper Transition Zone. Old 

 Gold Ridge Mine at 8000 ft. and at 7000 ft. alt. in a small side-canon of Prairie 

 Fork. (Nos. 1510, 1634.) 



Agrostis idahoensis Nash. Abundant around the waterhole at Kellys Cabin on 

 the upper edge of the Transition Zone. (No. 1522.) 



Koeleria cristata (L.) Pers. Occasional in the Transition Zone; much commoner 

 at lower levels. (Nos. 1453, 1520, 1521.) 



Melica stricta Bolander. Common in rocky ground in the Upper Transition Zone 

 on the north side of the mountains. Not detected on the south side. (Nos. 

 1501, 1516, 2065.) 



Poa scabrella (Thurb.) Benth. Common in dry ground in the chaparral belt and 

 in the Transition Zone. (No. 1355.) 



Bromus Orcuttianus Vasey var. Hallii Hitchc. Lower Transition Zone in Prairie 

 Fork San Gabriel River, 6000-7000 ft. alt. and at 6000 ft. in the South Fork 

 Lytle Creek. (Nos. 1454, 2070.) 



Bromus carinatus H. & A. Not uncommon in dry ground in the Lower Transition 

 Zone. 



Bromus grandis (Shear) Hitchc. Frequent in dry ground throughout the chapar- 

 ral belt and the Transition Zone. (No. 1407.) 



Agropyron tenerum Vasey. Common in moist ground in the Upper Transition 

 Zone. (Nos. 1512, 1630 part, 2069.) 



Agropyron caninum (L.) Beauv. Common on Browns Flats and also at several 

 stations in Upper San Antonio Canon. Lower Transition Zone. (No. 1518.) 



Elymus glaucus Buckl. Common in dry ground in the Chaparral Belt and in the 

 Transition Zone. (Nos. 1296, 1498, 1517, 1630.) 



Sitanion minus J. G. Smith (S. rigidum J. G. Smith). Common in dry rocky 

 ground in the higher parts of the Transition and throughout the Canadian 

 Zone. 



We are following Hitchcock (Jeps. Fl. Cal. 188.) in merging S. rigidum into 

 S. minus. We consider both species to be nothing more than reduced 

 ecological forms due to subalpine and desert conditions. (Nos. 1497, 1499, 

 1523, 1635, 1638.) 



Sitanion minus J. G. Smith var. californicum (J. G. Smith) Johnston comb. nov. 

 (<S. californicum J. G. Smith, S. glabrum J. G. Smith.) Frequent under the 

 pines in the Lower Transition Zone. Occasional in the Upper Chaparral 

 Belt. 



