Panicum 



Paniceae 



ir,7 



50 



Map 275 



Panicum c a pi 1 1 are L. 



50 



Map 277 



Panicum Gattingeri Nash 



Pulvini of panicle glabrous (sometimes the lower ones pubescent). 

 Leaf blades mostly 6-10 mm wide; spikelets 2 (2.2) mm long; plants yellowish 



green, freely branching at the nodes 4. P. Gattingeri. 



Leaf blades 2-6 mm wide (according to Hitchcock), 1-10 mm wide (according 

 to Fernald). (Rhodora 21: 112-114. 1919.) (See excluded species no. 82, 

 p. 1030. ) P- Tuckermani. 



1. Panicum flexile (Gatt.) Scribn. Map 274. Infrequent in the north- 

 ern and southern counties. In the north it is found in dry or moist, sandy 

 soil, usually on the marly borders of lakes, and on interdunal flats. In 

 the southern counties it is found in poor, dry soil in open places on the 

 crests of ridges, on washed or rocky slopes, and in dry pastures. 



N. Y., Que. to S. Dak., southw. to Fla. and Tex. 



2. Panicum capillare L. Witchgrass. Map 275. A pernicious weed 

 in all parts of the state in all kinds of soils and in all kinds of habitats 

 except in dense woodland. It shows great variation in size and form, 

 depending upon how much it is crowded in growing. In dried-up ponds 

 where it germinates late, mature plants may be only a few inches high. 



Maine to Mont., southw. to Fla. and Tex. 



3. Panicum philadelphicum Bernh. Map 276. A local to infrequent 

 or frequent species found mostly in the southern half of the state. It is 

 found in poor soil, probably slightly acid, generally in fallow fields and 

 on washed slopes. 



Conn, to Wis., southw. to Ga. and Tex. 



4. Panicum Gattingeri Nash. Map 277. Infrequent throughout the 

 state. It is usually found in moist, sandy soil along streams, about ponds, 

 in old logging roads, and along moist roadsides. 



Panicum Tuckermani Fern, is a closely allied species which I am not 

 able to separate from Panicum Gattingeri. Some of my specimens have 

 been named for me as Panicum Tuckermani, but I am referring them 



