130 



TRIANDRTA. DIGYNIA. Agrostis 



I believe it to be the preceding plant when growing in a drier 

 situation. I have specimens which shew that they gradually run 



into each other. 



[Amongst wheat, in light sandy loam, in a field called Church 

 Hill, Blymhill, Salop. Mr. Dickenson.] P. July— Sept. 



Var. 3. Only the shorter branches of the panicle crowded 

 with florets at the base ; longer branches subdivided. CaL inner 

 valve only serrulated upwards. 



Roots creeping, white, thick. Straw 2f feet high ; very thick, 

 smooth. Leaves large, rough. Panicle of a beautiful purple, from 

 7 to 9 inches long ; branches If- to 2] inches long. Calyx outer 

 valve strongly serrulated, inner with only a few minute serra- 

 tures near the point, JBloss. inner valve but half the length and 

 breadth of the outer. 



It has large creeping roots, resembling those of Triticum re- 

 pens, and so vigorous and pointed at the end, as to perforate po- 

 tatoes which lay in their way. The stems run upon the surface 

 of the ground to the extent of two feet or more, like those of the 



Agr. stolonifera, but the latter has only small fibrous roots strik- 

 ing cut of the joints of the stem, which lie upon the ground to a 

 great extent. Mr. Dickenson. 



In loamy soil, amongst wheat, and even in very light sandy 

 soil under the Norf. course of turnip husbandry. [In a field at 

 Blymhill, called Church-hill, amongst potatoes, and in another 

 called Pyehill, amongst wheat. Mr. Dickenson.] P. July — Sept. 



Var. 4. Panicle branches bare at the base : subdivided: calyx 

 both valves serrulated, inner only on the upper half. 



Straw trailing, striking root, thick, near a yard long. Leaves 

 large, very rough. Mr. Dickenson. Panicle 8 or 9 inches long* 

 pale green; branches l£ to 2^ inches long; bare at the bas^ 

 subdivided upwards. 



[Amongst wheat, in light land. Mr. Dickenson] 



P. July— Sept. 



All the above varieties are sufficiently common ; the 2d. 3d. 

 .and 4th. constitute the greater part of what is called squitch in 

 light arable lands. In some places it is called white squitch, to 

 distinguish it from the Agr. nigra, and stolonifera, which are 

 called black squitch, or couch. 



ni'gra. 





A. Panicle scattered; branches bare at the base, floret* 



\ 



smooth 



£ 



eers 



4.6. 



Root-leaves long and slender. Straws upright, 18 inches high- 

 Panicle meagre. Fruit-stalk fine deep purple. Florets deep browo* 

 Mr. Dickenson. Straws numerous, upright, slender, weak, * 

 foot high ; the lower joints sending off branches which creep on 



the ground. Leaves slender, flat, weak, smooth, generally shj> 





