TRIANDRIA.— DIGYNIA. 71 



very smooth ; culm 2 — 4 ft. long, succul, ; leav. 

 broad ; pan. large ; anth. orange. 



20. P. capillare : culm nearly simple ; sheaths very 



hairy ; panicle large, capillary, expanding, loose ; 



spikelets on long peduncles, acuminate, smooth ; 



abortive floret 1-valved. 

 HAB. Cultivated grounds. Aug. — Sept. H . Culm 



erect, 1 — 2 ft. high; sheaths hispid; branch, of 



the pan. reflex, when old. 

 /3. sylvaticum : culm branched at the base, very 



slender ; leaves linear. 

 HAB. In dry woods. Aug. 



21. P. longifolium: whole plant very smooth; culm 



compressed, erect, simple, slender ; leaves very 

 long and narrow ; panicle simple, elongated, race- 

 mose ; spikelets acuminate ; abortive floret neuter, 

 2-valved. 

 1 1 AB. Pine barrens. Sept.— Oct. 1| . Culm 2 ft. 

 high ; pan. small, few-fl. ; inf. glume acuminate. 



94. HIEROCHLOA. 



1 . II. borealis : panicle subsecund, a little spreading ; 

 peduncles smooth ; florets unarmed ; inferior valve 

 of the corolla ciliate on the margin ; root creeping, 

 I.IAB. Bog-meadows. May. U . Sweet-scented ; 

 culm IS in. high; leav. smooth and shining; pan, 

 few-fl. ; spik. brown and purple. 



1. U. alpina : panicle ovate, contracted ; spikelets com- 

 pressed, longer than the branches ; glumes lance- 

 olate, almost nerveless : lateral florets triandrous ; 

 one of them with an awn about as long as the 

 valves : sides almost smooth ; margin ciliate. 

 HAB. High mountains. June. U . Culm 8 in. high, 

 smooth, firm , fl. not tumid, larger than in the pre- 

 reding. 



95. HOLCUS. Soft grass. 



II. lanatus : panicle equal; florets shorter than the 

 calyx, the superior with a recurved awn ; root 

 fibrous. 



HAB. Wet meadows. Aug. U . Whole plant hoary- 

 pubescr.nl ' ; culm 18 in. high • pan. oblong, contract, j 

 fl. whitiihi 



