Bicknell : Ferns and flowering plants of Nantucket 473 



further much less stiffly depressed and geniculate, or even erect, with 

 longer, thinner leaves, having less inflated sheaths, and longer, more 

 slender spikes of much smaller shorter-awned flowers. The 

 glumes and flowering scales are also somewhat different in form 



and proportions. An 



two plants 



at their flowering periods is the relative size and color of the 

 anthers: in A. geniculatus they are often purple and are 1.5-2 

 mm. long, in A. aristulatns they are yellow and only one third 

 that size. 



There would seem to be a considerable difference of time 

 between the flowering periods of these grasses, since A. aristidatus 

 was found this last season at the Thousand Islands in full flower 

 late in September. 



Alopecurus pratensis L. 



Common and well established, mainly in fields and lots in the 

 general town region ; west to beyond Maxcy's Pond ; east to Mon- 

 omoy and Shawkemo, then in Polpis towards Quidnet ; 'Sconset. 

 Just in full flower June 7. 



Agrostis alba aristulata A. Gray. 

 Pocomo, in sterile soil far from any cultivated ground. In 



full flower June 15. 



Slender but rather stiff, in loose tufts; culms 1-2.5 dm. high, 

 erect, mostly geniculate close to the base, the basal leaf-sheaths 

 broadened and chaffy ; leaves very narrow, erect, involute ; panicles 

 Purplish, 2-10 cm. long, very narrow, with erect or erect-ascending 

 short branches ; outer glumes 1.75-2 mm. long, lemma 1.5-2 mm., 

 P ale * -75-1 mm.; awns 2-3 mm. long, wanting in many flowers 

 ot » some panicles. 



A distinct-appearing grass needing critical study. 



Agrostis 



sp. nov. 



Common in dry sandy places or sometimes in damp soil. In 

 f ull flower June 7. 



. Erect, tufted or of somewhat scattered habit, mostly 1.5-2 

 d *- high (1-6 dm.), pale green, much tinged with purple ; culms 

 ?fcn slightly geniculate at the lower nodes ; leaves slightly sca- 

 ^, short, erect, involute-filiform, mostly 2-6 cm. long or, in 

 st0l >t forms, larger and flattened, becoming 1-2 mm. wide and 

 'Ocm. long; ligule blunt or acute, lacerate, 0.5-4 ™ m - ™Z\ 

 She *ths smooth or slightly roughened, shorter than the internodcs , 



