314 OECHIDACEAE 



10. Blepharlglottis peramo^na (A. Gray) Eydb. Stem 3-9 dm. tall: leaf- 

 blades oblong to lanceolate, 8-20 cm. long: perianth violet-purple: lateral sepals 

 broadly ovate to suborbicular, 7-10 mm. long: petals as long as the sepals or nearly 

 so, spatulate, or the body orbicular-obovate, entire, or erose: lip 14-18 mm. long, the 

 lobea cuneate or flabellate, incised or erose: spur 19-26 mm. long. 



In meadows, New Jersey to Illinois, North Carolina and Tennessee. 



7. PERULARIA Lindl. 



Caulescent herbs, with thick fibrous roots, the stem leafy. Flowers relatively 

 small, in a terminal spike. Perianth yellowish or greenish. Sepals and petals spread^ 

 ing, all relatively broad. Lip lanceolate to suborbicular, undulate or with a lobe on 

 each side near the base, and a median tubercle, the spur longer than the lip. 

 Anthers with horizontal valves opening upward, dilated at the base, thus forming a 

 cavity enclosing the orbicular gland. Summer. 



Lip decidedly longer than wide: bracts mostly longer than the flowers. 1. P. {lava. 

 Lip about as wide as long: bracts mostly shorter than the flowers. 



Lip undulate, suborbicular, oval or ovate-orbicular: petals much longer than wide. 2. P. sciitellata. 



Lfp with 2 lobes at the base of the blade, hastate: petals as wide as long or wider. 3. P. bidentata. 



1. Perularla flava (L.) Eydb. Stem 3-6 dm. tall: leaf -blades elliptic, oblong 

 or lanceolate, 0.7-3 dm. long: bracts mostly longer than the flowers: lateral sepals 

 oval to obovate, 3-4 mm. long: petals slightly smaller than the sepals, erose or 

 crenulate: lip hastate, the middle lobe oblong to lanceolate, 4-5.5 mm. long; spur 

 shorter than the ovary. 



In swamps and marshes, Ontario to Minnesota and Louisiana. 



2. Ferularia scutellata (Nutt.) Small. Stem 3-6 dm. tall: leaf -blades oblong- 

 lanceolate or linear-lanceolate, 0.7-2.5 dm. long: bracts shorter than the flowers: 

 lateral sepals ovate to obovate, 2.5-3 mm. long: lip suborbicular or broadly oval in 

 outline, 2. .5-4 mm. long: spur about ^ as long as the ovary. 



In swamps or shallow water, southeastern Pennsylvania and Maryland to Arkansas 

 and Florida. 



3. Perularia bidentata (Ell.) Small. Similar to the next preceding species in 

 habit: flowers decidedly large: petals as wide as long or wider: lip ovate in outline, 

 4-6 mm. long, the tubercle horn-like: spur about as long as the ovary. 



In woods, Georgia, Florida and Alabama. 



8. HABENARIA Willd. 



Caulescent herbs. Flowers in a terminal spike. Perianth white or colored. 

 Sepals distinct or nearly so, the lateral ones spreading, slightly inequilateral. Petals 

 unequally 2-parted. Lip 3-parted, spurred. Anther-sacs elevated, each with an ap- 

 pendage at the base. Stigma with narrow appendages, the glands naked. 



Spur about as long as the ovary. 



Bracts not surpassing the flowers: spikes few-flowered. 



Leaves basal or nearly so: spur club-shaped. \. H. distans. 



Leaves scattered along the stem: spur filiform. 2. H. NuttalUi. 



Bracts surpassing the flowers: spikes many-flowered. 3. H. repens. 



Spur much longer than the ovary. 



Median sepal less than 10 mm. long: spur less than 6 cm. long. 



Leaves largest at the base of the stem, those of the stem nroadest near 



the base: median sepal suborbicular. 4. H. Simpsonii. 



Leaves largest about the middle of the stem, those of the stem broadest 



at the median: middle sepal ovate. 5. H. quinqueseta. 



Median sepal over 10 mm. long: spur over 10 cm. long. 6. H. Habenaria. 



1. Habenaria distans Griseb. Stem somewhat scape-like, 2-3 dm. tall, with 

 the larger leaves near the base, and sheathing scales above: leaf -blades oblong to 

 elliptic or nearly so, 4-15 cm. long: spike few-flowered: lateral sepals oval to ovate, 

 5-6 mm. long: narrow lobe of the petal slightly longer than the broader one: lip 6-9 

 mm. long. 



In low pine lands, Florida. Also in the West Indies. 



2. Habenaria Nuttdllii Small. Stem 2-4 dm. tall, leafy: leaf -blades broadly 

 linear to linear-lanceolate, 5-20 cm. long: spikes rather few-flowered: lateral sepals 



