324 OECHIDACEAE 



cuneate to suborbieular, erose, abruptly pointed: capsules clavate-oblong, 12-18 mm. 

 long. 



In thickets and woods, Maine to Minnesota, Georgia and Missouri. 



31. CORALLORHIZA R. Br. 



Caulescent succulent purplish, brownish or reddish herbs, with coral-like root- 

 stocks. Leaves reduced to scales. Flowers in a terminal raceme. Perianth variously 

 colored. Lateral sepals slightly inequilateral, often curved. Petals rather smaller 

 than the sepals, somewhat narrowed at the base. Lip dilated, the blade undulate or 

 lobed. Coral-root. 



Lip not lobed, often erose or crisped. 



Lip 3-3.5 mm. long, the blade oblong to oval. 1. C micrantha. 



Lip 4-8 mm. long, the blade obovate to suborbieular. 



Lip short-clawed or clawless, the blade short-tipped: column narrowly 



winged. 2. C. odontorhiza. 



Lip long-clawed, the blade notched: column broadly winged. 3. C. Wisteriana. 



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



Lip shallowly 3-lobed: spur obsolete. 4. C. Corallorhiza. 



Lip deeply 3-lobed : spur prominent. 5. C. maculata. 



1. Corallorhiza micrdntha Chapm. Stem 8-15 cm. tall : raceme 2-4 cm. long : 

 lateral sepals broadly linear to linear-oblong, 2-3 mm. long: lip 3-3.5 mm. long, the 

 blade oblong to oval, with erose sides and a rounded apex: capsules 6-7 mm, long. 



In woods, Florida. Summer and fall. 



2. Corallorhiza odontorhiza (Willd.) Nutt. Stem 1-3 dm. tall: raceme 4-10 

 cm. long: lateral sepals linear or nearly so, 3-4 mm. long: lip 4-4.5 mm. long, the 

 blade obovate or oval-obovate, with erose-crisped margins and an abrupt acute tip: 

 capsules 6-7 mm. long. 



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



3. Corallorhiza 'Wisterikna Conrad. Stem 2-3.5 dm. tall: raceme 3-10 cm. 

 long: lateral sepals linear to linear-lanceolate, 6-S mm. long: petals oblong-spatulate : 

 lip 8-10 mm. long, the blade broadly oval to broadly obovate, notched at the apex: 

 capsules 9-11 mm. long. 



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



4. Corallorhiza Corallorhiza ( L. ) Karst. Stem 1-3 dm. tall: raceme 2-10 cm. long: 

 lateral sepals linear to linear-spatulate, 3^ mm. long: petals mostly spatulate: lip 

 3-4 mm. long, the blade with 2 shallow lateral lobes below the middle and an ovate 

 middle lobe: capsules 8-10 mm. long. 



In woods. Nova Scotia to Alaska, North Carolina and Washington. Spring. Also in 

 Europe. 



5. Corallorhiza maculata Eaf. Stem 2-5 dm. tall: raceme 5-20 cm. long: 

 lateral sepals linear to linear-oblong, 6-9 mm. long: petals oblong to oblong-spatu- 

 late: lip 6-8 mm. long, the blade with 2 prominent lateral lobes and a suborbieular 

 middle lobe: capsules 12-20 mm. long. [C. multiflora Nutt.] 



In woods, Nova Scotia to North Carolina, Florida and California. Summer. 



32. POLYSTACHYA Hook. 

 Epiphytic herbs. Leaves several, approximate at the base of the flower-stalk. 

 Flowers in a terminal panicle. Perianth mainly yellow. Lateral sepals broad, adnate 

 to the long column-foot. Petals narrow. Lip dilated, 3-lobed, jointed to the column- 

 foot, folded up against the edges of the lateral sepals. Capsules nodding. 



1. Polystachya minuta (Aubl.) Britton. Stem 1-6 dm. tall: blades of the 

 lower cauline leaves oblong to broadly linear, 1-3 dm. long: lateral sepals triangular, 

 5-6 mm. long, acute: petals spatulate or linear-cuneate 3-3.5 mm. long, obtuse: lip 

 5-6 mm. long, the lateral lobes directed forward and nearly equaling the broad 

 middle lobe: capsules 9-11 mm. long. 



In hammocks, southern peninsular Florida and the Keys. Also in tropical America. 



