200 Rhodora [November 



* P. acre HBK. Including var. leptostachyum Meisn. Common, 

 apparently throughout the province. 



** P. ROBUsnus (Small) Fernald, p. 147. Yarmouth Co.: cold 

 brook in sphagnous swale by Salmon (Greenville) Lake; boggy swale 

 by Tusket (Vaughan) Lake, Gavelton; peaty and muddy dried-out 

 pond-hole near head of St. John Lake, Springhaven; in running 

 water, thicket at margin of Randel Lake, Argvle. See pp. 140, 

 147, 149, 155, Kil), HIS. 



* P. HTDROPIPEROIDES Mielix. Swales, savannahs and peaty 

 shores, valleys of the Salmon and Tusket Rivers, Yarmouth Co. 



** P. HTDROPIPEROIDES Miehx., var. digitatum, n. var., planta 

 1 1.5 m. alta; foliis lineari-lanecolatis attenuatis plerumque 1.3-2 

 dm. longis; spicis densis 0.5-1 cm. crassis ad apices ramulorum 

 plerumque aggregatis. 



Plant I 1.5 m. high; leaves linear-lanceolate, attenuate, mostly 

 1.3-2 dm. long: spikes densely flowered, 0.5-1 cm. thick, mostly 

 crowded at the tips of the branches. — Nova Scotia: boggy savannah 

 bordering St. John Lake, Springhaven, Yarmouth Co., October S, 

 1920, Fernald & Under, no. 21,093 (type in Gray Herb.). 



Differing from typical P. hydropiperoidee in its great height, very 

 elongate leaves, thick crowded spikes and very late flowering. For 

 further notes see p. 168. 



P. Ram Babington. See Fernald, Riiodoka, xv. 72 (1913). Damp 

 sands and gravels of the coast from Shelburne Co. to Cape Breton. 

 See pp. 150, L58, 165. 



P. A( adifa'sk Fernald, Rhodora, xvi. 1SS (1914). To the original 

 Station at Grand Narrows should be added: gravelly beach of Great 

 Bras d'Or, Kidstone Island, very scarce. See pp. 134, Hi"). 



*P. Fowleri Robinson, Rhodora, iv. (17 (1902). P. buxifolium 

 Nutt. in Bong. Veg. Ins. Sitcha, Kil (1832), nomen seminudum, as 

 to Sitka plant only, not as to synonymy nor apparently as to refer- 

 ence to Nuttall's specimen; not Bieb. /'. aviculare, s. buxifolium 

 Ledeb. Fl. Ross. iii. 532 (1849-51) as to Sitka plant only. P. IH- 

 torale, $. buxifolium Meisner in DC. Prodr. xiv. 98 (1856) as to de- 

 scription and plant. /'. mariHmum Fowler, Prelim. List PI. N. B. 

 53 (1885), not L. (1753). P. littorale ntehetue Small, Mem. Dept. 

 Bot. Columbia Col. i. 102 (1895).— Queens Co.: with P. allocarpum 

 on damp sand-flats, Central Port Mouton. Yictoria Co.: gravelly 

 beaches of Great Bras d'Or, Baddeck and Kidstone Island. Previ- 

 ously collected by J. R. Churchill on the beach at Aspy Bay. 



The name P. Fowleri is here retained as the first adequately de- 

 fined specific name, the name P. buxifolium Nutt. being open to very 

 serious doubt. In the first place Nnttall did not publish his P. buxi- 

 folium, a species which Bongard ascribed to him as if it had been 

 published. Bongard's publication was as follows: 



