ORDER CXXII. — OKCIIIDACEJi:. 525 



Genus VI.— CALOrO'GOX. Brown, 18—1. 

 (From kalos, beautiful, aa^pogon, beard.) 



Segments of the perianth spreading, distinct. Lip unguicu- 

 late, the lamina bearded. Column free, winged at tlie apex. 

 Anther terminal. Pollen angular. 



1. C. Pl'lchel'lus, (Nutt.) Stem erect, glabrous, naked. Leaves rnd- 

 ical, ensiform, long, erect, geneially but one. Flowers in a terminal 

 spike ; segments of the perianth lanceolate ; the two lateral exterior 

 ones oblique, the interior narrower. Anthers in a small cavity at the 

 summit of the column. — Purple. U- June — July. In damp soils. 

 12—18 inches. 



Genus VII.— COROLLORHrZA. Haller, 18-1. {Coral root.) 

 (From koralliony coral, and rhUa, root) 



Segments of the perianth equal, connivent. Lij) extended 

 behind, joined to the spur or free. Coliunn free. Anthers 

 terminal. Pollen masses 4, oblique. 



1. C. multiflo'ra, (Nutt.) Stem glabrous, clothed with sheaths; the 

 upper sheath frequently terminating in a subulate leaf. Leaves none. 

 Flowers numerous, in a terminal raceme, nodding. Lip euneate-oval, 

 with two teeth at the base. Spur adnate, conspicuous. — Purplish- 

 brown. If. Sept. — Oct. In rich woodlands. 12 — 15 inches. 



2. C. ODOXTOEHi'zA, (Willd.) Stem erect, slender, inclosed in two or 

 three sheaths. Flowers numerous, in terminal racemes, pendulous; 

 segments of the perianth connivent. Lip dilated, spotted, with two 

 teeth. Capsule globose. — Purple. If. March — April. In rich soils, 

 middle and lower Car. and Geo. 



3. C. uyema'lis, (Nutt.) Leaf solitary, large, somewhat plaited, ta- 

 pering into a long petiole. Scape inclosed in about tliree sheath.-j. 

 Flowers in erect, terminal racemes; segments of the perianth nearly 

 equal, cormivent, linear-oblong. Lip dilated at the summit, riil'.;ed 

 along the middle, 3-lobed ; the middle lobe nearly round, cronulate. 

 Pollen masses 4, waxy. — Purple. If. May. In rich, shaded soils. 12 

 — 18 inches. 



Genus VIII.— ARETHU'SA. Swartz., 18—1. 

 (An ancient Nympli.) 



Floivei' ringent ; segments of the perianth united at the base. 

 Lip joined to the column, cucullate at the apex, crested inter- 

 nally. Pollen masses granular. 



1. A. BULBo'sA, (L.) Stem sheathed, generally 3 — 1. Flomr 1. nt 

 the summit of the stem ; segments of the perianth ni-arly e«pial, tlio 

 upper ones incurved. Lip about the length of the other M.^^nu-nts, 

 crenulate, bearded in the middle.— Purple. 2f. June. Mouutama. 

 6 — 12 inches. 



