FLORA OF THE SAN ANTONIO MOUNTAINS 83 



Carex (Vignea) alma Bailey. Frequent in moist ground in the Upper Sonoran 

 and Transition Zones. (Nos. 1411, 1508, 2061.) 



Carex (Vignea) abrupta Mackenzie. Common on Baldy Summit; very abundant 

 on Pine Mountain. On the latter peak it grows so thick that some patches 

 resemble a field of grain. The plant grows in dry rocky ground and seems to 

 be confined to the higher parts of the Canadian Zone. (Nos. 1399, 1636.) 



JUNCACE.E 



Luzula comosa E. Mey. Moist ground at Native Son Mine, alt. 5000 ft., Lower 



Transition Zone. (No. 1632.) 

 Juncus balticus Willd. Common in a small pasture at the Native Son Mine. 

 J uncus Mertensianus Bong. Abundant in marshy ground in a side canon of Prairie 



Fork, alt. 7000 ft.; rare about the waterhole at Kellys Cabin, alt. 8350 ft. 



and not uncommon in the marshes in Coldwater Fork Lytle Creek, alt. 7000 



ft. All stations are in the Upper Transition Zone. (Nos. 1390, 1502.) 

 Juncus Xiphioides E. Mey. Growing along the creek near the Native Son Mine, 



alt. 5000 ft. (No. 1684.) 



LILIACE.E 



Allium Burlewii Davidson. Found only in exposed well packed granitic soil. 

 Seen at Baldy Lookout, alt. 6000 ft., at the lower edge of the Transition 

 Zone and as high as 9500 feet alt. in the Canadian Zone on Little Baldy. 

 Always found in large colonies. 



Differs from A. iribracleatum in its long pedicels and hence much looser 

 heads, and in its more exerted stamens. The plants average larger and 

 the flowers much lighter in color (petals white with definite pink midrib). 

 In A. Burlewii the leaves are single, exceeding the stem only by a centi- 

 meter or so. 



There is a peculiar form collected by Hall (No. 1497) at 6700 feet alt. in 

 Swartout Valley which seems worthy of some nomenclatorial recognition. 

 The perianth segments are long attenuate, 8-11 mm. long, on very slender 

 pedicels 2 to 3 times as long. The broad, 6.5 mm. wide, green, leaf reaches 

 19 cm. in length which equals three times the length of the stem. (Nos. 

 1268, 2484, 1490.) 



Allium Breweri Wats. In habitat this species is quite distinct from the last. 

 That species demands well packed granitic soil while A. Breweri demands that 

 it be very loose. A rock slide is its favorite situation. The plant is common 

 in suitable situations from the Lower Transition Zone, at Baldy Lookout, up 

 to the summit of Baldy in the Canadian Zone. 



This station for A. Breweri is far south of the nearest known station. It is 

 not surprising, therefore, that the plant is somewhat different from the typi- 

 cal northern plant. Our plants have much broader bracts than do specimens 

 of the type collection (Brewer 1060 from Mt. Diablo). The leaves are terete 

 and only 5 mm. at most in diameter and not flat and 10-13 mm. broad as in 

 the typical form. Det. M. E. Jones. (Nos. 1263, 1446, 1543, 2031.) 



Muilla seroiina Greene. Occasional in dry ground in the lower part of the pine 

 belt. Frequent at lower levels. 



