18 



Yukon at the mouth of the Tanana (lat. 65 KK, long. 152), over the Tanana Valley 

 and its tributaries (east to long. 146), and west on the upper Kuskokwim and its 

 tributaries, to about longitude 154. The last point is the westmost limit now known 

 for tamarack and Minook Creek, tributary of the Yukon in lat. 65 30', is the north- 

 most limit known in Alaska. The point farthest to the northwest at which tamarack 

 was previously known to occur is Finlayson Lake (long. 130 30 / , lat. 61 35 X ), which is 

 over 500 miles east and over 250 miles south of the Alaska stations recently discovered. 



Alpine larch (Larix lyallii}. The distribution of this larch is not yet fully known. 

 Its southern range was extended quite recently into Montana and Idaho. Two large 

 tracts were found in 1898 by H. B. Ayres in northern Montana, one on the summit 

 of the Continental Divide above 6,000 feet, extending from the Canadian boundary 

 southward 15 miles to the head of Quartz Creek, and the other, extending along 

 the summits of the Whitefish Mountains south to Whitefish Creek. Two other 

 bodies found in Montana by him in 1899 are the most southern forests known of 

 this tree. One is on the east slope of the Continental Divide, above 7,000 to 8,000 

 feet, at Camp Creek Pass at the head of the Middle Fork of Sun Eiver, while the 

 other is on the western slope of the Continental Divide at Pend Oreille Pass, on 

 the divide between the Clearwater and West Fork of South Fork of Flathead River. 

 J. B. Leiberg discovered alpine larch in the Bitterroot Forest Reserve of Idaho on 

 the main range of the Bitterroots at elevations above 7,500 feet from Lolo Pass 

 nearly to Nez Perces Pass, and also on the Lochsa-Selway divide above Grave Peak. 

 These points represent the southmost limit known for the tree in Idaho* 



In Oregon Prof. C. V. Piper and others have also extended the range of alpine 

 larch southward from Mount Stuart to Mount Hood, in the Cascade Range, where 

 its distribution is still very imperfectly known. 



Arizona cypress (Cupressus arizoiiica}.^. G. Willson, Forest Ranger, recently 

 sent specimens for identification of what proves to be this cypress from a new 

 locality. He writes that he found a body of it situated approximately 4 miles north- 

 west of the southeastern corner of the Prescott Forest Reserve, Central Arizona, 

 at an elevation of about 5.500 feet. The grove extends over nearly 160 acres, and lies 

 on the head of the south prong of Rock Creek, the heaviest stand being on the east 

 side of Shamrock Butte. So far as now known Arizona cypress has only a limited 

 and disconnected range on a few mountains in Arizona and northern Mexico. 

 Mention here is due Supervisor F. C. W. Pooler for encouraging Mr. Willson to 

 report this find. 



California torreya (Tumi on. caMfornicum) . Much has been recently added to the 

 hitherto little-known range of this interesting California tree in the Sierras. S. J^ 

 Flintham found it on Butte, Chico, and Deer creeks, in Yuba and Tehama counties, 

 thus extending the range 30 miles farther north than the previously recorded 

 northern limit on Upper Yuba and Feather rivers. In 1899 George B. Sud worth 

 noted it in the Stanislaus Reserve on Empire Creek (tributary of South Fork of 

 American River) at 2,500 feet elevation, on north slope of South Fork of Moke- 

 lumne River at 2,000 to 2,500 feet, on San Antonio Creek (tributary of south fork of 

 Calaveras River) at 2,000 feet, and on south Fork of Webber Creek at 3,000 feet. 

 Farther south it was observed by Mr. Sudworth in 1900, and several years later by 

 Mr. Flintham, near the Dinkey Bigtree Grove (in T. 10 S., R. 26 E.), in the valley 

 of Mill Creek (tributary of Kings River) Ui sec. 13, T. 14 S., R. 27 E., in ''draws" 

 and canyons along the stage road to the Giant Forest, on the road to Mineral King, 

 on the South Fork of the Kaweah River near the boundary of the Sierra Reserve, 

 along the lower canyon of the Middle Fork of Tule River, and at other points in the 

 lower Kaweah and Tule River canyons, the extreme southern limit being in T. 21 

 S., R. 30 E. 



New Mexican locust (Robinia neo-mexicana] . The local distribution of New Mexi- 

 can locust was recently worked out by F. J. Phillips in the Jemez (northern New 



