OKCHIDACEAE. 89 



1. L. Loeselii (L.) L. C. Rich. Leaf -blades elliptic to elliptic-lanceolate, 5-17 

 cm. long: scape 0.5-2 dm. tall: lateral sepals lanceolate, about 4 mm. long: 

 petals 6-7 mm. long: lip about 4 mm. long, the blade siiborbicular, abruptly- 

 pointed: capsules oblong, 10-14 mm. long. — S. E. Rare, in ravines. — Schists. 



2. L. liliifolia (L.) L. C. Rich. Leaf-blades ovate, oval, or oblong-ovate, 5-15 

 cm. long: scape 1-3 dm. tall: lateral sepals linear-lanceolate or nearly linear, 

 about 11 mm. long: petals 11-13 mm. long: lip 11-13 mm. long, the blade 

 obovate-cuneate to suborbicular, erose, abruptly pointed: capsules clavate- 

 oblong, 12-18 mm. long. — N. S. Common, on wet banks and in woods. — 

 Sandstones and shales, schists. 



17. CORALLORRHIZA [Haller] R. Br. Caulescent succulent purplish, 

 brownish, or reddish herbs with coral-like rootstocks. 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 short-clawed or clawless, the blade short-tipped : column narrowly winged. 



1. C. odontorhiza. 



Lip long-clawed, the blade notched : column broadly winged. 2. C. Wisteriana. 

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



Lip shallowly 3-lobed : spur obsolete. 3. G. CoraUorrhiza. 



Lip deeply 3-lobed : spur prominent. 4. C. maculata. 



1. C. 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. — S. Common, in rich woods. — Schists. — Fall. 



2. C. Wisteriana Conrad. Stem 2-3.5 dm. tall: raceme 3-10 cm. long: lateral 

 sepals linear to linear-lanceolate, 6-8 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. — M. Rare, in woods. — Quartzite. — Spr. 



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

 lateral sepals linear-spatulate, 3-4 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. — M. S. Rare, in woods. — Limestones, 

 schists. — Spr. 



4. C. maculata Raf. Stem 2-5 dm. tall: raceme 5-20 cm. long: lateral sepals 

 linear to linear-oblong, 6-9 mm. long: petals oblong to oblong-spatulate: lip 

 6-8 mm, long, the blade with 2 prominent lateral lobes. — N. S. Not very 

 common, in rich woods. — Sandstones and shales, schists. — Fall. 



18. LIMODORUM L. Scapose herbs with corms. Leaves few, consisting 

 of several sheathing scales, and one with an elongate blade. Flowers in a 

 terminal raceme-like spike. Perianth mainly purple, pink-purple, or white. 

 Lateral sepals inequilateral, shorter than the median one. Petals nearly equi- 

 lateral, somewhat narrowed at the base. Lip with 2 minute lateral lobes and a 

 dilated often stalked middle lobe, bearded with clavate hairs. 



1. L. tuberosum L. Leaf-blade narrowly linear to narrowly oblong, 1-4 dm. 

 long: scape 2-9 dm. tall: perianth pink-purple: lateral sepals half -orbicular, 

 15-17 mm. long, acute: petals 16-18 mm. long, the blades oblong to lanceolate: 

 middle lobe of the lip mostly less than 10 mm. wide, flabellate, nearly truncate: 

 column-wings rhombic. — S. Rare, in swamps. — Schists. — Sum. — Grass-pink. 



