GRASS FAMILY. 165 
6. Calamagrostis confinis (Willd.) Nutt. Bog Reed-grass. (Fig. 377.) 
Arundo confints Willd. Enum. 1: 127. 1809. | 
Calamagrostts confints Nutt. Gen. 1:47. 1818. IMA 
Calamagrostis robusta Vasey, Contr. U. S. Nat. Herb. 3: 82. WW / 
1892. WY ! 
WA 
Culms 114°-3° tall, erect, simple, smooth or rough. W/ | /] 
‘Sheaths shorter than the internodes; ligule about 1’ long; NY yy / 
leaves 2’’ wide or less, rough, flat, or involute at the apex, 
the basal often one-half to two-thirds as long as the culm, 
the stem leaves 2’—10’ long; panicle contracted, 2%4’-9/ in 
length, the branches 1/=2’ long, erect; spikelets 114//-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 
slightly longer than the scale. 
In bogs, Vermont, New York and Pennsylvania to Van- 
couver Island, south in the Rocky Mountains to New Mexico. 
Aug.-Sept. Specimens of this grass have been referred to 
C. Lapponica (Vink) Trin., but we have been unable to prove 
the occurrence of that species within our area, 
7. Calamagrostis neglécta (EKhrh.) Gaertn. 
Narrow Reed-grass. (Fig. 378.) 
Arundo neglecta Ehth. Beitr. 6: 137. 1791. 
Calamagrostis neglecta Gaertn. Fl. Wett. 1:94. 1799. 
Calamagrostis stricta Beauv. Agrost. 15. 1812. 
Glabrous and smooth throughout, culms 114°-2%° 
tall, erect, simple, slender. Sheaths shorter than the 
internodes; ligule %’’ long or less, truncate; leaves 
narrow, inyolute in drying, the basal one-third as long 
as the culm, those of the culm 2/—5/ long, erect; pan- 
icle contracted, 214’—4’ in length, the branches 1’ long 
or less, erect; spikelets 2’” long, the scales scabrous, 
the outer acute; third scale obtuse, about three-fourths 
as long as the second and nearly twice the length of 
the basal hairs; awn bent, exceeding the scale. 
Labrador and Newfoundland to Washington. Also in 
Europe. Summer. 
8. Calamagrostis cinnoides (Muhl.) Scribn. Nuttall’s Reed-grass. 
(Fig. 379.) 
Arundo cinnoides Muhl. Gram. 187. 1817. 
eerie Nutlalliana Steud. Syn. Pl. Gram. Igo. 
Cataniagrostis cinnotdes Scribn. Mem. Torr. Club, 5: 42. 
1895. 
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 1//-2/’ 
long; leaves 4’-1° 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 1/—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 Georgia. Ascends 
to 2000 ft. in Pennsylvania. July—Aug. 
