ORDER 155. GRAMINEJ3. 



305 



8, hairy, at the base of the ovate pales (6). li Ditches 

 and swamps, Can. to Car., and Ky. July, August. 

 ft. pictn. Striped 6. Lvs. endlessly variegated with 



white and green. Cultivated. 



2 P. Canarleiisls L. Canary O. Bird-seed. Culm 

 terete, erect, 1 2f; Ivs. lance-linear ; pan. spicate, ovoid, 

 12' ; gl. winged on the keel (c) ; rudiments smooth. (T) 

 Introduced inio fields and gardens from Isle Fortunatus. 



26. ANTHOXANTHUM, L. SWEET VERNAL 

 G. Spikelets (d) 3-flowered, the central fl. 5 , the 

 two lateral neuter, each of 1 bearded pale. Gl. 2, 

 unequal. Pales 2, short, awnless. Sta. 2. 



A. odoratum L. Slender, erect, 10 18 7 ; Ivs. short; pan- 

 icle spicate, 1| 3' ; neutral pales ciliate (), one with a 

 bent awn from near the base, the other with a straightawn 

 from the back above. Fls. in May and June ill-scented, 

 but when cut as hay it is very fragrant. (a-, the 9 fl.)[ 



27. HIEROCHLOA, Gmel. SENECA G. Spkl. 



3-flwd. Gl. 2, scarious. Lateral fls. $ 

 triandrous, central fl. ? , with 2 (or 3) sta- 

 mens. Inflor. paniculate. Sweet-scented. 

 1 H. borcalls R. & S. (/) Very smooth; 



simple, erect, 15 30'; root Ivs. as long as the 



culm, cauline Ivs. lanceolate, short ; pan. open, 



few-flwd., 23' ; spkl. (g) broad, subcordate. colored, 



meadows, Va., and North. May. 

 2 H. :i Ip ma R. & S. Smooth; culm erect, 



6 8', stout; Ivs. lance-linear; pan. ovoid, 



1 2' ; ppkl. purple, longer than their branch- 

 lets; lower fl. with an awn on the back as long as the 

 pales, n High Mts., N. Eng., N. Y. June. 



28. HOLCUS, L. SOFT G. Spkl. 2-flwd., pan- 

 iculate. Gl. herbaceous, boat-shaped, mucronate. 

 Fls. pedicellate, the lower , awnless ; the upper 

 $ or neutral, awned on the back. July. 



H. lanatiis L. (h) Hoary- 

 pubescent, 1^ 2f ; Ivs. lance- 

 linear; pan. oblong, dense, purplish-white; fls. (i) 

 shorter than the glumes (k) ; awn of the sterile fl. 

 curved, included. U Wet meadows. A beautiful grass. 



29. AIRA, L. Spkl. 2-flwd. without abortive 

 or sterile ones. Gl. 2, thin, shining, subequal. 

 One of the fls. pedicellate. Pales subequal, hairy 

 .it base, the lower truncate at apex, and awned on 

 Mie back. Fls. in an open pan., silvery-purplish. 



Glumes longer than the fls. Pale entire No. 1 



Ql. about equaling the fls. Pale lacerated.. Nos. 2. fl 



