318 TRANSACTIOXS OF THE [Sess. lxxxhi 



is totally ditierent to Ulei. The latter says, " The leaves 

 taper more abruptly into an apex " {i.e. than in P. poly- 

 gonus, C. et S.), but this is certainly not so, neither in a 

 specimen from Brazil nor in the drawing in Graebner's 

 Das Pflanzenreich, fig. 25, 105 (1907). I quite think, how- 

 ever, with Hagstrom that Graebner's drawing of the fruit is 

 much more like polygonus ; for this see Cham, and Schlecht. 

 Linnaea, ii, t. 4, f. 11 (1827). 



P. confervoides, Reich. (United States). — This remark- 

 able species was na^med in the Vienna herbarium by 

 Schweintz "P. monficola" {i.e. a dweller in mountains), 

 and he remarks, " Sub hoc nomine missa desiderata species 

 in Auctoribus Amer. sept. Purshuis, Torreiyo, Darlingtoni, 

 Nuttalli." So the author adopts this as a division, i.e. 

 " Monticoli." 



P. siihsihericiis. Hagst. (North Asia). — The author kindly 

 sent me a portion of this, and he is quite correct in con- 

 sidering it distinct from P. .-iihericus, Ar. Benn., only once 

 gathered by the Russian Geographical Expedition. 



P. foliosus, Rafin. (N. America). — He remarks, " I scarcely 

 understand how to establish a real difference between the 

 two Morongian varieties niiujarensis and californicus." 

 Yet Tuckerman made the first into a species, and lately 

 Piper (Cont. U.S. N. Herb., xi, 637, 1906) made the second 

 into a species, but later he wrote (April 1915) "that 

 after all he thinks Morong may be right." The difference 

 between the very narrow-leaved form and californicus is 

 great, but is one of size and degree only. Is it possible 

 that the Sandwich Islands station, " I. of Oahu, in Lower 

 Pauca, A. A. Heller, No. 2387, 2555, 1895," Brit. Mus., 

 and " I. of Ranai along the Hawpape River, A. A. Heller, 

 1895," is the result of the "driftwood thrown on the shores 

 from N.W. America," mentioned by Wallace, Island Life, 

 ed. 2, 320, 1892 ? 



P. turonifer, Hagst. (P. foliosus xpusillus). — The speci- 

 mens certainly seem to decide this is the hybrid, as the 

 spikes are quite infertile where they occur. 



P. strictifolius, Ar. Benn. (United States). — The author 

 suorgests this may be P. foliosus xpanorinitanus. His 

 plant may be so — I have not seen it, — but the Canadian 

 fruiting plant is certainly not so. The specimens of the 



