GRASS FAMILY. 



2. Alopecurus geniculatus L. Marsh Foxtail. ; 



'49 



1805. 



Alopecurus geniculatus L. Sp. PI. 60. 1753. 

 Alopecurusjulyus J. E. Smith, Engl. Hot. pi. 1467. 

 Alf><'cnrus aristulatus Michx. Fl. Bor. Am. i: 43. 

 Alopecurus geniculatus var. aristulatus Torr. Fl. U S 

 1:97. 1824. 



Glabrous or very nearly so, culms 6'-i8' tall, erect, 

 or sometimes decumbent at the base, simple or spar- 

 ingly branched, smooth. Sheaths usually shorter 

 than the internodes, loose or somewhat inflated ; lig- 

 ule i #"-3" long; leaves i'-6' long, #"-2" wide, sca- 

 brous, especially above; spikes i'-$'in length, 2"-4" 

 thick; outer scales of the spikelet slightly united at the 

 base, \"-\%'. f long, obtuse or subacute, smooth, gla- 

 brous except on the pubescent lateral nerves and 

 strongly ciliate keel; third scale somewhat shorter, 

 obtuse, smooth and glabrous, the awn inserted at or 

 below the middle, equalling or exceeding'it. 



In \vet soil, Newfoundland to British Columbia, south 

 to Florida, Tennessee, Arizona and California. Also in 

 Europe and Asia. Julj'-Sept. 



3. Alopecurus pratensis I,. Meadow Foxtail. < Fig. 338.) 



Alopecurus pralensh L. Sp. PI. 6a 1753. 



Nearly or quite glabrous, slender, culms i-2# tall, 

 erect, simple. Sheaths usually much shorter than the 

 internodes, loose or somewhat inflated; ligule about 

 y-i" long, erose-truncate; leaves iJ^'-jK' long, i" 

 3" wide, scabrous, at least above; spikes i#'-a>s' in 

 length, 4 // -6' / thick; outer scales of the spikelet unit- 

 ed at the base for about one-quarter their length. 

 3" long, acute, glabrous except the sparingly pubes- 

 cent lateral nerves and the strongly ciliate keel; third 

 scale slightly shorter, obtuse, smooth and glabrous, 

 the awn inserted about quarter way up the scale and 

 exceeding it. 



In meadows. Nova Scotia to souther:- -k awl 



Ohio. Naturalized from Europe. June-July. 



4. Alopecurus alpinus J. E. Smith. Alpine 

 Foxtail. (Fig. 339.) 



Alopecurus alpinus J. E. Smith, Engl. Bot pi. 1126. 1803. 



Culms glabrous and smooth or nearly so, 5 / -2 tall, 

 erect, sometimes decumbent at the base, simple. Sheaths 

 generally shorter than the internodes, loose, often inflated; 

 ligule i "-2" long, rounded at the apex; leaves i'-f 

 long, i "-3" wide, smooth beneath, slightly scabrous 

 above; spike i#' in length or less, 3"-6" thick; outer 

 scales of the spikelet united only at the base, 2" long, 

 obtuse, villous and ciliate; third scale about equalling the 

 outer ones, obtuse, glabrous except at the villous apex, 

 the awn inserted about one-third the way up, a little ex- 

 ceeding the scale. 



Greenland and Labrador to Alaska. Also in arctic and 

 alpine Europe and Asia. Summer. 



