496 APPENDIX. 



[Vol. I: p. 55.] 4. Picea brevifolia Peck. 

 Swamp Spruce. (Fig. 122a.) 



Picea brevi/olia Peck, Spruces of the .'Vdirondacks, 13. 1897. 



A small slender tree, sometimes 30° high, or on moun- 

 tain summits reduced to a low shrub. T-.i'igf fuhcscciit ; 

 sterigmata glabrous, or slightly pubescent; leaves straight, 

 or a little curved, mos-tly glaucous, obtuse, or merely 

 mucroiiiilnte, stout, 2" -5" long ; cones oval, persistent 

 for tua seasons or more. %"-i2" long, the scales with 

 eroded margins; wing of the seed about 2" long. 



In swamps and open bogs, Vermont and northern New York 

 to Michigan. June. 



[Vol. III. 



[Vol. I: p. in.] 2a. Syntherisma 



serotina Walt. Late-flowering 



Finger-grass. (Fig. 241a.) 



Svnlherisma serotina Walt. Fl. Car. 76. 1788. 

 Panicum serolinum Trin. Gram. Panic. 166. 1826. 



Culms slender, erect, often creeping and branch- 

 ing at the base, $'-24' tall, smooth and glabrous. 

 Sheaths about one-half as long as the internodes, 

 pilose with long spreading hairs; ligule a scarious 

 ring; leaves linear-lanceolate to lanceolate, l'-4' 

 long, i"-\" wide, acuminate, pilose on both sur- 

 faces; inflorescence composed of 2-6 i -sided slender 

 erect or ascending spike-like racemes I'-^yi' long, 

 arranged singly, in pairs, or scattered and approximate; spikelets numerous, oval, about 

 )i" long and one-half as broad, acute, in pairs, one short-, the other long-pedicelled, in 2 

 rows on one side of a flat and winged rachis less than ^" wide; first scale wanting, the 

 second about one-half as long as the spikelct, 3-nerved, the third scale 7-nerved, both scales 

 appressed-pubescent on the margins. 



Fields and roadsides, Delaware (according to Scribner); North Carolina to Florida, west to 

 Mississippi. 



[Vol. i: p. 113.] la. Panicum colonum L. 

 Jungle Rice. (Fig. 243a.) 



Panicum colonum L. Syst. Ed. 10, 870. 1759. 

 Panicum U^alleri KlI. Bot. S. C. & Ga. i: 115. 1817. Not Pursh, 

 1814. 



Culms tufted, smooth and glabrous, S'-l^" tall, often 

 decumbent and rooting at the lower nodes. Sheaths com- 

 pressed, usually crowded; ligule wanting; leaves flat, l'-?' 

 long, i"-4''' wide; inflorescence composed of 3-1S i-sided 

 more or less spreading dense racemes, %'-l]i' long, disposed 

 along a 3-angled rachis and generally somewhat exceeding 

 the length of the internodes; spikelets single, in pairs, or in 

 3's in 2 rows on one side of the hispidulous triangular rachis, 

 obovate, pointed, the first scale about one half as long as the 

 spikelet, 3-nerved, t/ie second and third scales a little more 

 than \" long, aivnless, 5-ner\'ed, hispid on the nerves, the 

 fourth scale cuspidate. 



Fields and roadsides, Virginia to Florida, Texas and Mexico. 

 Common in all tropical countries. March-Sept. 



