32 



LEAFLETS. 



midTeifl beneath and on the ocrese : spikes very short and short- 

 pedtmcled, ovoid, the peduncle slightly both pubescent and glan- 

 dular ; bracts ovate, obtuse, glabrous. 



Tnlea of the Grand Bond Valley, eastern Oregon, W. C. Cu- 

 sick* n. X763 in my set and that of U. S. Herb. Quite similar, 

 and perhaps specifically identical, is a plant from Lake Pend 

 d'Ordflle, Idaho, by A. A. Heller, 1892. 



P. INSIGNIS. Aquatic, "growing in from 5 to 7 feet of water 

 and floating on it," the stout stems with short internodes which, 

 as to the lower and more deeply submerged are cylindrical, but 

 newer the summit swollen and fistulous : leaves floating, not 

 large, li to 3 inches long and from oval to elliptic-oblong, ob- 

 tuaCj often subcordate, the stoutish petioles about 2 inches long : 

 peduncles very stout, 2 inches long, bearing the large spike an 

 inch or more above the water, and this oval, 1 to 1 J inches long, 

 fully I inch in diameter, the flowers therefore very large, the 

 fruiting perianth nearly i inch long, more than twice the length 

 of the somewhat round-obvate shining achene, which neverthe- 

 less is not quite smooth, rather distinctly lineolate toward the 

 base and obscurely scrobiculate in the middle. 



In a lakelet at 9,550 feet on San Bernardino Mountain, south- 

 ern California, W. G. Wright, no other data given on the two 

 sheets in my herbarium except Mr. Wright's herbarium number 

 1809. The species is remarkable for the stoutness of its pedun- 

 cles and the great size of its flowers and spikes. 



Possibly Coville & Funston's n. 1584 may be referred here; 

 but it is a smaller plant, with spikes and flowers not nearly as 

 large. 



Another aquatic form of Southern California is obtained by 

 Mr. Parish at Aguanga, San Diego Co., and needs further field 

 study. It can hardly prove to be P. itisignis, however. 



P. FISTULOSA. Eiparian, evidently, though with the foliage 

 and several slender spikes of the properly terrestrial species; 

 decumbent and rooting part of stem of great size, internodes 

 5 or 6 inches long, J to I inch thick, hollow, strongly and 

 coarsely striate : leaves oblong-lanceolate and lanceolate, acu- 

 minate, 2 to 4 inches long, the lowest nearly glabrous, the 



