GRASS FAMILY. 

 6. Calamagrostis confinis (Willd.) Nutt. Bog Reed-grass. 



Arnudo confinis Willd. Knum. i: 127. 1809. 

 Calamagrostis confinis Nutt. Gen. i: 47. 1818. 

 'aliiinasfroslis robusta Vasey, Contr. I'. S. Nat. Herb. 3: 82 

 1892. 



Culms i> -3 tall, erect, simple, smooth or rough. 



sheaths shorter than the internodes; ligule about I'^long; 



2" wide or less, rough, flat, or involute at the apex, 



le basal often one-half to two-thirds as long as the culm, 

 the stem leaves 2 / -io / long; panicle contracted, 2j / -o / in 

 k-ngth, the branches i'-2 / long, erect; spikelets i>"-2" 

 long, the scales somewhat scabrous, the outer acute; third 

 scale obtuse, .the basal hairs equalling it or three-fourths 

 as long; awn more or less bent, from a little shorter to 



lightly longer than the scale. 



In bogs, Vermont, New York and Pennsylvania to Van- 

 couver Island, south in the Rocky Mountains to New M 

 Aug.-Sept. Specimens of this grass have been referred to 

 (". Lapponica (Link)Trin., but we have been unable to prove 

 the occurrence of that species within our area. 



7. Calamagrostis neglecta i Khrh. i r.aertn. 

 Narrow Reed-grass. (Fig. 378.) 



Arundo neglecta Khrh. Ik-itr. 6: i \- 1791. 

 Calamagroslis neglecta Gacrtn. I 4. 1799. 



Calamagrostis stricta Beauv A^r. .-: i -. 



Glabrous and smooth throughout, culms !>*-*#* 

 tall, erect, simple, slender. Slu-ath> shorter than the 

 internodes; ligule y 2 " long or less, truncate; leaves 

 narrow, involute in drying, the liasal one-third as long 

 as the culm, those of the culm 1'-$' long, erect; pan- 

 icle contracted, 2' 2 ' / -4 / in k-ngth, the branches i' long 

 or less, erect; spikelets 2" long, the scales scabrous, 

 the outer acute; third scale obtuse, ahout three-fourths 

 as long as the second and nearly t\\ rigth of 



the basal hairs; awn bent, exceeding the scale. 



Labrador and Newfoundland to Washington. Also in 

 Europe. Summer. 



8. Calamagrostis cinnoides (Muhl.) Scribn. Xuttall's Reed-grass. 



(Fig. 379.) 



-Arundo cinnoides Muhl. Gram. 187. 1817. 

 Calamagrostis Nuttalliana Steud. Syn. PI. Gram. 190. 



1855. 

 Calamagrostis cinnoides Scribn. Mem. Torr. Club, 5: 42. 



Culms 3-5 tall, erect, simple, smooth and gla- 

 brous. Sheaths shorter than the internodes, smooth 

 or rough, the lower sometimes sparingly hirsute, and 

 rarely with a villous ring at the summit; ligule i"-2" 

 long; leaves \'-\ long or more, 2 // ~5 // wide, attenuate 

 into a long point, scabrous, occasionally sparingly 

 hirsute; panicle 3 / -7 / in length, contracted, the 

 branches erect, the lower i / -2 / long; spikelets 3 "-4" 

 long; scales strongly scabrous, the outer about equal, 

 acuminate and awn-pointed; third scale shorter, obtuse, 

 the basal hairs one-half to two-thirds its length; awn 

 stout, exceeding or equalling the scale; prolongation of 

 the rachilla bearing a terminal tuft of hairs. 



In moist soil, New Hampshire and Massachusetts to Pennsylvania, south 

 to 2000 ft. in Pennsylvania. July-Aug. 



