WiEGAXD : A Revision of the Gen'us Listera 1G5 



die of the stem, small (in northern specmcns 14-18 mm., in south- 

 ern up to 25 mm. long), triangular-ovate, truncate or slightly 

 cordate at the base, aplculate, primary veins three : raceme few- or 

 many-flowered, open, rachis slender, slightly glandular : bracts min- 

 ute, round-ovate, obtuse, very much shorter than the pedicels: 

 flowers very small, on very slender glandular pedicels which equal 

 or exceed the glabrous ovaries : petals short, oblong, recoiled : sepals 

 round-ovate, minute, not over y^ the length of the lip : lip linear, 

 long and slender (6-10 mm. long), cleft >^-2^ the way down into 

 two nearly filiform acute lobes, sinus tooth small, provided on each 

 side at the sessile base with a small incurved auricle, an inversely T- 



shapcd fold near the base : column very short and thick (.5 mm. 

 long). 



Shad}' woods and sphagnous swamps, Florida (Chapman) and 

 Louisiana to New Jersey ; also in Oswego County, N. Y., where 

 it is confined entirely to the large peat bogs. 



Some of Dr. Mellichamp's specimens show a tendency toward 

 proliferation. Besides an increase in diameter of the stem many 

 of the bracts are converted into leaves. 



Specimens examined; Louisiana, New Orleans, Drummond 

 ( I S3 2) -South Carolina, Bluflton County, Mellichamp ; North 

 Carolina, Curtis, Garber ; New York, Palermo, Oswego County, 

 ^Vibbe, Sheldon, Rowlee ; New York, Baldwinsville, Beauchamp, 

 Underwood. 



5. LisTEKA ovata(L.) R. Br. Ait. Hort. Kew. 5: 201, 1813. 

 Ophrys ovata L. Sp. PI. 946. 1753. 



ipactis ovata Crantz. Stirp. Austr. ed. II., 473. 1769. 



WiUd. Sp. PI. 4: ^j. 1805. 

 Ncottia latifc 



59. 1818. 



Plant very large and stout (30-55 cm. high), glabrous below 

 the leaves, densely pubescent above, with loose basal sheaths and 

 several bracts below the raceme ; leaves borne below the middle of 

 the stem, very large (7-1 2 cm. long),elliptic-oval, mucronate, many- 

 nerved : raceme (15 cm. long), many-flowered, slender, but rather 

 dense, very long peduncled : rachis pubescent : bracts of medium 

 length, ovate, acuminate : flowers large, on short slightly glandu- 

 lar pedicels which equal the glabrous ovaries, and are scarcely 

 longer than the bract : the ovate obtuse sepals and broadly linear 

 petals both as long as the ovary (5^ length of lip) erect or spread- 

 ing : lip large (10 mm^ long), narrowly oblong-cuneate, sessile, 

 without auricles or lateral teeth, cleft ^^-i^ way down by a nar- 



