APPENDIX. 
This appendix contains descriptions of additional plants found within the region 
covered by this work during the several years the book has been in press, and corrections. 
Page 31, for the second ‘‘ appressed ’’ in the key under Taxodium read “ erect." 
Page 170, after Cyperus speciosus, insert : i 
44a. Cyperus longispicatus Norton. Perennial. Leaves much overtopped by the 
scape ; blades 1-2 cm. wide, or sometimes narrower: scape erect, mainly 1-2 m. tall, 
smooth: bracts of the involucre several, 1 cm. wide, often 1 m. long: umbel compound ; 
rays 15 cm. long or less: spikes mainly 2-3 em. long: spikelets 2-4 cm. long, slender, 
20—40-flowered, light yellowish brown ; scales ovate, short-tipped, nerved between the green 
back and membranous margins : achenes 3-angled, obpyramidal, about 1 mm. long, light 
brown, abruptly pointed. 
In water or low grounds, Florida to Texas and Mexico. Spring to fall. 
Page 172, after Cyperus ovularis, insert : 
55a. Cyperus globulósus Aubl. Similar to C. ovuluris in habit, but commonly more 
robust. Heads 11-21 mm. long, echinate, yellow-brown : spikelets much larger than those 
of C. ovularis; plants somewhat resembling those of C. echinatus, but achenes narrow. 
In fields and open woods, Florida and Alabama. Also in tropical America. Summer and fall. 
Page 172, after Cyperus retrorsus, insert : 
56a. Cyperus Pollárdi Britton. Perennial by small corms. Leaves shorter than 
the scape ; blades usually less than 3 mm. wide : scapes 6-13 dm. tall, smooth : inflorescence 
of few unequally peduncled heads : bracts of the involucre usually 4, one or sometimes two 
of them surpassing the heads: spikelets 3-4.5 mm. long, the scales loose, or deciduous at 
maturity : achenes linear-oblong, about 1.5 mm. long. 
In pine woods and on prairies, peninsular Florida. Spring to fall. 
56b. Cyperus Náshii Britton. Perennial, mostly tufted. Leaves shorter than the 
scape ; blades less than 4 mm. wide: scapes 4-11 dm. tall, smooth : inflorescence of nu- 
merous (15-20) slender-peduncled heads : bracts of the involucre typically 7-11, several of 
them surpassing the heads: heads 1 cm. long or a little less, often compound : spikelets 
rather crowded, 2-3 mm. long, acute, the scales appressed, persistent : achenes linear or 
nearly so, 2 mm. long. 
In pine lands, peninsular Florida. Spring to fall. 
Page 176, in second line of the key under Scirpus strike out ‘‘or rarely 2 in No. 5," 
and add *' smooth " after ‘‘ perianth-bristles" in the last line. 
Page 195, after Rynchospora Curtissi, insert : 
18a. Rynchospora fásca (L.) Ait. f. Stems slender, 1.5-4.5 dm. tall, smooth : 
leaf-blades filiform-setaceous, channeled, shorter than the stems: spikelets fusi‘orm, about 
5 mm. long, acute, in 1-4 loose clusters ; scales brown, shining : perianth-bristles 6, often 
unequal, upwardly barbed : achenes narrowly obovoid, smooth, shining ; tubercle triangu- 
lar-subulate, nearly as long as the achene-body. 
8 In bogs and about pine-land ponds, New Brunswick to Michigan and Georgia. Also in Europe. 
ummer. 
Page 196, after Rynchospora gracilenta, insert : 
22a. Rynchospora Smállii Britton. Stems relatively stout, 8-14 dm. tall, tufted : 
leaf-blades flat, 2-5 mm. wide: spikelets numerous in several rather loose clusters, fusi- 
form, 3-4 mm. long; scales brown, lax, and deciduous at maturity : perianth-bristles up- 
wardly barbed, as long as the achene and tubercle: achenes narrowly obovate, brown, 
smooth and shining, 1.5 mm. long excluding the tubercle, the tubercle smooth, about } as 
long as the achene-body. 
In bogs and on damp hillsides, Pennsylvania and western North Carolina. Summer and fall. 
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