PLANTS OF SOUTHERN NEW JERSEY. 241 



Panicularia canadensis (Michx.).* Rattlesnake Grass. 

 PI. XV.. Fig. 3. 



Brisa Canadensis Michaux, Fl. Bor. Am. I. 71. 1803 [Canada]. — Barton, 



Fl. Phila., I. 63. 1818. 

 Glyceria canadensis Knieskern 38. — Britton 295. 



Swamps of the Northern and Middle districts, common ; rarely 

 in the Pine Barrens. 



Fl. — Mid-June to mid- July. 



Middle District.— 'Farmmgdale, New Egypt, Riverside, Pemberton (C), 

 Birmingham, Fish House, Haddonfield (S), Griffith's Swamp, Gibbstown 

 (NB), Elm (C), Kirkwood (C), Mickleton, Clementon (S), Albion, Sickler- 

 ville (S), Gloucester, Salem (C), Beaver Dam. 

 Pine Barrens. — Bamber, Landisville, Vineland. 



Panicularia obtusa (Muhl.). Blunt Manna Grass. 



PI. XV., Fig. 4. 



Poa obtusa Muhlenberg, Gram. 147. 1817 [Pennsylvania, New Jersey and 

 New England].— Barton, Fl. Phila., I. 62. 1818.— Torrey, Fl. U. S. I. 

 112. 1824. 



Glyceria obtusa Knieskern 38. — Britton 295. 



Panicularia obtusa Keller and Brown 52. 



Swamps and bogs throughout our region and locally in Hud- 

 son and Middlesex Counties to the north. 



Fl. — Early July to late August and sporadically into October. 



Middle District. — Farmingdale (S), Hartford, Birmingham, Delaire, Fish 

 House, Griffith's Swp., Westmont (S), Lindenwold (S), Repaupo, Tomlin 

 (S), Mickleton (NY), Paulsboro, Sicklerville (S), Swedesboro. 



Pine Barrens. — Allaire, Lakehurst, Toms River (S), Bear Swamp (S), 

 Hammonton, Parkdale (S), Egg Harbor City, Eighth St. (T). 



Cape May.—Qreen Creek, Cold Spring (OHB). 



Panicularia nervata (Willd.) Nerved Manna Grass. 



Poa nervata Willdenow, Sp. PI. I. 389. 1798 [North America].— Barton, Fl. 



Phila., I. 61. 1818. 

 Glyceria nervata Knieskern 38. — Britton 296. 



* Panicularia laxa Scribner (Bull. Torr. Club XXL, Z7- 1894.— Mt. Desert, 

 Me.), is reported from Mickleton and Swedesboro. Specimens in the Acad- 

 emy herbarium show smaller spikelets, but I cannot find in this character or in 

 those advanced by Prof. Fernald (Rhodora 1910, p. 135) sufficient constancy 

 to make the recognition of this form desirable .so far as local material is 

 concerned. At most it can only be regarded as a sub-species. It was col- 

 lected by Mr. Heritage at Mickleton before it was described by Scribner. 

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