ORDER CXXII. ORCHIDACEvE. 527 



2. H. blephariglot'tis. Stem erect, leafy. Leaves lanceolate, acute, 

 sheathing at the base. Flowers in terminal spike*. Lip lanceolate, 

 ciliate, about as long as the upper petal ; spur filiform, pendulous. — 

 White. 2f . June — July. Damp soils. 1 — 2 feet. 



3. H. crista'ti. Stem erect, slightly angled, glabrous, leafy. Leaves 

 lanceolate, sheathing at the base, long. Flowers in a terminal spike, 

 crowded. Lip longer than the exterior segments, ciliate ; the other 

 segments rounded, the two lateral ones toothed; spur short. — Yellow. 

 If. June — July. Swamps. 1 — 2 feet. 



4. H. psyco'des. Stem erect, slender, glabrous. Leaves long, lanceo- 

 late, sheathing at the base. Flowers in loose, terminal spikes. Lip 

 twice as long as the other segments, 2-parted, many-cleft ; the other 

 segments ovate-lauceolate ; spur filiform, clavate, ascending longer than 

 the germ. — Pale yellow. June — July. Middle Car. and Geo. 12 — 18 

 inches. 



5. H. Elliot'tii. Stem erect, leafy. Leaves narrow-lanceolate, 

 sheathing; upper ones small. Flowers in crowded spikes; exterior 

 segments of the perianth rather large. Lip with the margins toothed, 

 almost fimbriate, smaller than the other segments; spur subulate. — 

 Yellow. If. July. Low grounds. Common. 1 — 2 feet. 



6. H. tridenta'ta. Stem erect, slender, glabrous. Leaves lanceo- 

 late ; the lower one large, the upper one small. Flowers in compact 

 spikes. Lip ovate-lanceolate, 3-toothed ; the other segments ovate, 

 obtuse, connivent; spur filiform. — Yellowish-green or white. 2f. June 

 — July. Swamps. 1 — 2 feet. Gymnadenia tridentata. 



7. H. fusces'cens. Stem erect, glabrous, leafy. Leaves lanceolate, 

 glabrous, sheathing. Flowers scattered, in terminal spikes. Lip ovate, 

 toothed at the base ; the other segments spreading ; spur subulate. 

 Bracts longer than the flowers. — Brownish-yellow. If. July — Aug. 

 In open lands. Mid. Geo. 10—12 feet. 



8. H. Michaux'ii, (Nutt.) Stem erect, leafy. Leaves numerous, 

 ovate-lanceolate, glabrous, sheathing at the base. Flowers in a long 

 terminal spike, scattered. Lip 3-parted; the lateral segments setace- 

 ous, the two interior segments 2-parted; spur long, obtuse. — 2f. Aug. 

 — Oct. Pine-barrens, southern Car. and Geo. 



9. H. re'pens. Stem erect, leafy. Leaves lanceolate. Lip 3-part ed, 

 with the lateral segment setaceous, the two inner segments of the peri- 

 anth 2-parted, the lower segment setaceous. Bracts as long as the 

 flower. — Greenish-yellow. 2f . Aug. — Sept. Damp soils. 12 — 18 

 inches. 



Genus XII— TIPULA'FJA. Nutt. 18—1. 

 (From its resemblance to the insect Tipula.) 



Segments of the perianth spatulate, expanding. Lip 3- 

 lobed ; middle lobe elongated, sessile, spurred at the base. 

 Column free, wingless, extended forward. Anther persistent. 

 Pollen masses 4, parallel, 



1. T. disco'lor, (Nutt.) Root bulbous, concatenated. Leaf solitary, 

 ovate, petiolate, plaited, glabrous. Flowers in a terminal raceme, nod- 

 ding, minute. Operculum furnished with two auxiliary valves, closing 

 the masses of the pollen. — Greenish. If. Aug. Pine-barrens. 



