362 GEOLOGICAL SUKVET OP CANADA. 



565. PINUS. 



(2015.) P. albicaulis, Engelm. ; Macoun, Cat. III., 465. 



Generally abundant in southern intei-ior of British Columbia, be- 

 tween heights of 5000-6000 feet ; Toad Mountain and vicinity to 7000 

 feet. (Dawson.) 



(2071.) P. ponderosa, Dougl., var. scopulorum, Bngelm. ; 

 Macoun, Cat. III., 466. 



From near the head of Lower Arrow Lake, southward, and all along 

 Kootanie Lake, B.C. (Dawson.) 



566. PICEA. 



(2082.) P. nigra, Link. ; Macoun, Cat. III., 468. 



Since the publication of Part III., we have made extensive collections 

 in Prince Edward Island, and having observed the so-called species, 

 P. nigra and P. rubra, growing together, we are satisfied that they 

 are distinct enough to be sepaiated as a species and variety. In Gray, 

 Man., ed. VI., 492, P. rubra is admitted as a variety, and we now 

 write it as : — 



Var. rubra, Bngel. ; Gardn. Chron. (N.S.), XL, 1879. 



Difi'ers from the species in having darker and larger leaves ; larger^ 

 bright red-brown cones, which are more readily deciduous after 

 maturitj'. (Engelm.) It is more than probable that in the far North- 

 west we have a species or variety that is also distinct from the typical 

 eastern P. nigra. This form has large ovoid cones, which are deep 

 j)urple, and without the brownish tint of those from the east. 



567. TSUCA. 



(2088.) T. Pattoniana, Bngelm; Macoun, Cat. III., 472. 



On the higher slopes of the mountains at the Glacier Hotel, Selkirk 

 Summit; also on the summit of Mount Benson (alt. 3000 feet), Mount 

 Mark (alt. 3300 feet), and Mount Arrowsmith (alt. 5500 feet), Van- 

 couver Island. 1887. (Macoun.) In valleys of the Coast Eange at 

 head of Chilkoot Inlet (Lat. 59° 30'), and on the Chilkoot Pass to 



