496 



APPENDIX. 



[Voi,. III. 



[Vol. i: p. 55.] 4- Picea brevifolia Peck. 

 Swamp Spruce. ( Fig. 122a.) 



Picea brevifolia Peck, Spruces of the Adirondacks, 13. 1897. 



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

 tain summits reduced to a low shrub. Twigs pubescent; 

 sterigmata glabrous, or slightly pubescent; leaves straight, 

 or a little curved, mostly glaucous, obtuse, or merely 

 mucronulate, stout, 2"-$" long; cones oval, persistent 

 for two seasons or more, 8 // -l2 // 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. i: p. in.] 2a. Syntherisma 



serotina Walt. Late- flowering 



Finger-grass. (Fig. 241a.) 



Svntheristna serotina Walt. Fl. Car. 76. 1788. 

 Panicum serotinum. Trin. Gram. Panic. 166. 1826. 



Culms slender, erect, often creeping and branch- 

 ing at the base, 8 / -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, I'-sf 

 long, 2 // -4 // wide, acuminate, pilose on both sur- 

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

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

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

 %" 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 yi" wide; first scale wanting, the 

 second about one-half as long as the spikclct, 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. 1: p. 113-] ia. Panicum colonum L,. 

 Jungle Rice. (Fig. 243a.) 



Panicum colo?ium L. Syst. Ed. 10, 870. 1759. 

 Panicum IValteri'EW. Bot. S. C. & Ga. 1: 115. 1817. Not Pursh, 

 1814. 



Culms tufted, smooth and glabrous, 6' -2% tall, often 

 decumbent and rooting at the lower nodes. Sheaths com- 

 pressed, usually crowded; ligule wanting; leaves flat, 1/-7' 

 long, i // -4 // wide; inflorescence composed of 3-18 i-sided 

 more or less spreading dense racemes, ]i r -\ %' 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, the second and third scales a little more 

 than \" long, azvnless, 5-nerved, hispid on the nerves, the 

 fourth scale cuspidate. 



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

 Common in all tropical countries. March-Sept. 



