70 University of California Publications. [botany 



Epipactis gigantea Domjl. Stream Orchis. 



This orchis was collected along streams of the south side 

 between 4200 and 6000 ft. alt. It is plentiful in Lily Canon. 

 (Nos. 668, 2370.) 



Habenaria leucostachys Wats. Sierra Rein-orchis. 



Much more general in its distribution than the last, lieing- 

 found along streams on all sides of the mountain and up to 

 9000 ft. alt. (Nos. 729, 961, 2448, 2513.) 



Listera convallarioides fSir.J Torr. Broad-lipped Twayblade. 



The range of this species was considerably extended by its 

 discovery in cool, shaded caiions on the north side of San 

 Jacinto Mountain at about 7500 ft. alt. (No. 2534.) 



SALICACE.^. 



Populus trichocarpa T. d- G. Black Cottonwood. 



Seen only along Tahquitz Creek at 6000 ft. alt., where there 

 is a small grove. The trees average onlj' 30 ft. in height. 

 (No. 2445.) 



Salix cordata Mackenzieana Hook. 



Collected only on Tahquitz Creek in the lower part of the 

 pine belt. (No. 2447.) 



Mr. Parish has kindly sent us a specimen of a willow collected 

 by himself in the San Bernardino Mts., (no. 1785), wdiich was 

 determined by Mr. Bebb as 8. cordata Watsoni Bebb, and which 

 is exactly the same as our no. 2447 except that the aments 

 are slightly shorter. But both of these seem to be nearer the 

 var. Mackenzieana, into which the var. Wat.soni should probably 

 be merged. The San Jacinto Mt. specimens are 10 ft. high; 

 the leaves 1^-2^ in. long, 7-9 lines wide at the middle and 

 in outline the same as those figured by Sargent* (not oblong 

 and short-acuminate as given for var. Watsoni) ; pistillate aments 

 15 lines long; capsules on stalks 1 line long. 



*Silva ix. t. 479 (1890) 



