326 ORCHIDACEAE 



B. Lip 3-lobed, the lateral lobes spreading or directed forward. 



Spur obsolete : lip shallowy 3-lobed : capsules 8-10 mm. long. 4. C. Corattorhita. 



Spur prominent : lip deeply 3-lobed : capsules 12-20 mm. long. 5. C. multi flora. 



1. Corallorhiza micrantha Chapm. Foliage pale or greenish purple. Steins rigid, 

 8-15 cm. tall : leaves reduced to 2 or 3 sheathing scales : raceme 2-4 dm. long, loosely 

 6-12-flowered : pedicels 1-2 mm. long, ascending : sepals linear-oblong, 1.5-2.5 mm. long': 

 lateral petals oblong, shorter than the sepals : lip broadly oblong or oval, about as long as 

 the petals, rounded at the apex, erose on the sides : capsules oval-obovoid, 6-7 mm. long. 



In woods, Florida. Summer and fall. 



2. Corallorhiza odontorhiza (Willd. ) Nutt. Foliage light or deep purple. Stems 

 1-3 dm. tall, sometimes zigzag : leaves reduced to several sheathing scales : racemes 4-10 

 cm. long, 6-20-flowered : sepals linear, or linear-spatulate, 2.5-3 mm. long: lateral petals 

 nearly similar, broader and barely shorter : lip obovate or oval-obovate, about as long as 

 the petals, entire or erose, not notched, gradually contracted to the base : column with 

 very narrow wings : capsules oval, 6-7 mm. long. 



In woods, Massachusetts to Michigan, Florida and Missouri. Summer. 



3. Corallorhiza Wisteriana Conrad. Foliage light to deep purple or brownish. 

 Stems 2-3.5 dm. tall, strict or slightly zigzag : leaves reduced to several sheathing scales : 

 racemes 3-10 cm. long, 6-15-flowered : pedicels 2-3 mm. long : sepals linear or linear-lan- 

 ceolate : lateral petals nearly similar to the sepals : lip broadly oval or broadly obovate, 

 8-10 mm. long, white spotted with crimson, notched at the apex, truncately narrowed into 

 a claw : column strongly 2-winged near the base : capsules elliptic-oblong or oblong- 

 obovoid, about 1 cm. long, often drooping. 



In woods, Massachusetts to Ohio, Florida and Texas. Winter and spring. 



4. Corallorhiza Corallorhiza (L.) Karst. Foliage light purple. Stems 1-3 dm. 

 tall : leaves reduced to 2 or 5 sheathing scales : raceme 2-10 cm. long, loosely several- 

 flowered : pedicels 1-4 mm. long : perianth dull purple : sepals linear or slightly broad- 

 ened upward, 3-4 mm. long : lateral petals similar to the sepals or a little broader, 

 shorter : lip oblong, shorter than the petals, with two small lateral teeth below the middle, 

 notched or 3-toothed at the apex : capsules oblong or oblong-obovoid, 8-10 mm. long. 

 [Corallorhiza innata R. Br. ]. 



In woods, Nova Scotia to Alaska, New Jersey, Wisconsin and Washington, and in the mountains 

 to Georgia. Spring. 



5. Corallorhiza multiflora Nutt. Foliage deep purple. Stems 2-5 dm. tall, stout : 

 leaves reduced to several sheathing scales : racemes 5-20 cm. long, 9-30-flowered : perianth 

 brownish purple : sepals linear or linear-oblong, 5-7 mm. long : lateral petals oblong, 

 shorter than the sepals : lip white, spotted and striped with purple, 3-lobed, crenulate : 

 capsules oblong, 12-20 mm. long. 



In woods, Nova Scotia to British Columbia, Florida, Missouri and California. Summer. 



28. APLECTRUM Nutt. 



Succulent herbs, from a chain of corms, one of these representing a season's growth. 

 Stems scape-like, solitary. Leaves reduced to sessile scales on the stem, a solitary normal 

 blade developed in the late summer or fall. Flowers in terminal racemes. Perianth dark- 

 colored but conspicuous. Sepals and lateral petals rather similar, narrow. Lip broadened 

 upward, slightly 3-ridged, narrowed into a claw at the base, spurless. Column free. 

 Anther slightly below the summit of the column. Pollen masses 4, lenticular : capsules 

 drooping. ADAM-AND-EVE. PUTTY-ROOT. 



1. Aplectrmn spicatum (Walt.) B.S.P. Foliage glabrous. Leaf solitary, de- 

 veloped in the fall, erect ; blade elliptic, 4-20 cm. long, acute, commonly lasting until 

 spring, narrowed into a winged petiole : scape beside the leaf, 2-6 dm. tall, usually Avith 

 3 scales : raceme 5-15 cm. long : bracts longer than the pedicels : pedicels stout, shorter 

 than the ovary : perianth brownish yellow mixed with purple : sepals linear to linear- 

 spatulate, about 1 cm. long : lateral petals nearly like the sepals : lip shorter than the 

 lateral petals, undulate-crenulate : column shorter than the lip, curved : capsules oblong, 

 2-2.5 cm. long. [A. hiemale Nutt.] 



In woods and stony soil, Ontario to the Saskatchewan and the mountains of Georgia, Missouri 

 and California. Spring. 



29. TIPULARIA Nutt, 



Acaulescent herbs, with corms of several generations often connected by offsets. Leaf 

 solitary, erect, appearing in fall or winter. Scape solitary, appearing in the summer, 

 simple, topped by a loosely flowered bractless raceme. Flowers not showy. Perianth green. 



