OECHIDACEAE. 53 



elongate median sepal. Lip elongate, the upper part of the narrow blade 

 crisped: callosities wanting. 



1. P. setacea Lindl. Plant 3-6 dm. tall: blades of the lower cauline leaves 

 oblong to elliptic, 4-10 cm. long: lateral sepals linear-filiform, 15-17 mm. 

 long, exclusive of the spur: lip 30-37 mm., the body narrowly elliptic or linear- 

 elliptic with a slender tip: capsules 14-17 mm. long. Hammocks. (Bah., 

 Cuba, Ant.} 



7. STENORRHYNCHUS L. C. Eich. Caulescent brightly colored succu- 

 lent herbs. Leaves various, the basal with more or less elongate blades, early 

 decaying, upper cauline leaves mere sheathing scales. Flowers in a conspicu- 

 ous spike. Perianth reddish, yellowish, or white. Lateral sepals narrow, 

 united at the base and decurrent as a spur which is adnate to the hypan- 

 thium. Petals shorter than the lateral sepals. Lip entire, scarcely as long as 

 the lateral sepals, the blade lanceolate, the claw ciliate, with thickened 

 margins, destitute of callosities. Stigma-beak subulate. 



1. S. orchioides (Sw.) L. C. Eich. Stem 3-7 dm. tall, stout: blades of the basal 

 leaves elongate, oblong to linear or broadest above or below the middle: spike 

 conspicuous; red or yellow: lateral sepals linear-lanceolate, 20-27 mm. long: 

 petals lanceolate, 15-20 mm. long, slightly curved: lip slightly shorter than 

 the lateral sepals, with a lanceolate body and a stout claw with lateral ridges 

 and cilia. Hammocks. (Bah., Cuba, Ant.) 



8. IBIDIUM Salisb. Caulescent herbs. Leaves various, the basal and 

 lower cauline with usually narrow blades, the upper cauline leaves mere sheath- 

 ing scales. Spike spiral, compact. Perianth pale. Median sepal and petals 

 coherent: lateral sepals erect. Lip erect, or with a spreading tip, with 2 basal 

 callosities, the lower portion folded around the very short column. Stigma 

 with a 2-forked beak. [Gyrostachys Pers.] LADIES '-TRESSES. 



Flowers borne In a single rank : spike secund. 



Basal leaves short; blades wide: spike scarcely spiral. 1. I. longilabre. 



Basal leaves elongate ; blades very narrow : spike strongly 



spiral. 



Blades of the basal leaves flat : Up 7-9 mm. long. 2. I. laciniatum. 



Blades of the basal leaves channeled : lip 4-6 mm. long. 3. /. tortile. 



Flowers borne in several ranks : spike not secund. 4. /. cernuum. 



1. I. longilabre (Lindl.) House. Plants 2-4 dm. tail: basal leaves 2-5 cm. 

 long; blades lanceolate to oblong-lanceolate: median sepal 8-10 mm. long: 

 lip 7-8 mm. long, often with a very broad base. Pinelands. 



2. I. laciniatum (Small) House. Plants 3-9 dm. tall: basal leaves mostly 

 10-40 cm. long; blades elongate-linear or slightly tapering to both ends: 

 median sepal 8-10 mm. long: lip 7-9 mm. long, much longer than wide, with 

 long slender callosities. Everglades. 



3. I. tortile (Sw.) House. Plants 2-4.5 dm. tall: basal leaves 8-30 cm long; 

 blades elongate-linear, often rather slender: median sepal 5-6 mm. long: lip 

 mostly 4-6 mm. long, slightly longer than wide, with short, stout, callosities. 

 Pinelands. (Bah., Cuba, Ant.) 



4. I. cernuum (L.) House. Plants 1.5-7 dm. tall: basal leaves 5-30 cm. long; 

 blades linear to narrowly oblong, flat: median sepal 8-12 mm. long: lip mostly 

 8-11 mm. long, oblong or with a dilated base. [7. odoratum (Nutt.) House.] 

 Everglades and along creeks. 



9. BEADLEA Small. Caulescent herbs. Leaves various, the basal and 

 lower cauline with wide blades, the upper cauline mere sheathing scales. 



