ORCHIDACE&. 297 



of the column, and terminating in a spur. Anthers all parallel, close 

 together. Pollen in small grains combined in 2 large masses. 



0. SPECTABILIS (Showy Orchis). Acaulescent ; scape low, with about 5 

 acute angles ; leaves few, mostly 2, nearly as long as the scape, oblong-obo- 

 vate, somewhat thick in texture, of a shining green ; flowers large, few, 

 showy ; bracts lanceolate, acute, large and leaf -like ; petals and sepals arched, 

 mostly pink, rarely white ; lip white, entire ; spur obtuse, white. In rich, 

 rocky woods. May. 



3. Habenaria. Flower ringent. Sepals and petals nearly equal. 

 Lip depressed, attached to the base of the column, terminating in a 

 spur. Anther-cells parallel. Pollen-masses 2, pedicellate, attached to 

 the 2 glands of the stigma. 



1. H. TRIDENTATA (Naked Orchis). Stem slender, bearing a large, ob- 

 long or oblong-ovate, obtuse leaf toward the base, and several smaller ones 

 above ; flowers small, greenish, rather numerous, in a short, oblong spike ; 

 lip truncate, 3-toothed ; spur slender, curved upward, clavate, longer than 

 the ovary. July. 



2. H. PSYCODES (Small-fringed Orchis"). Stem leafy, angled ; leaves 

 oblong, upper ones lanceolate ; flowers small, purple, fragrant, in a dense 

 raceme ; lower sepals roundish-elliptical, obtuse ; petals toothed at the ex- 

 tremity ; lip 3-parted, tapering at base ; spur longer than the ovary. Com- 

 mon in wet meadows. July-August. 



4. Arethusa. Flowers ringent. Sepals and petals lanceolate, 

 nearly equal, cohering at base. Lip destitute of spur, spreading and 

 recurved, bearded inside. Column dilated, attached at base to the lip. 

 Anther-cells 2, approximate. Pollen-masses 4. 



A. BULBOSA (Arethusa}. Mostly leafless in blossom ; scape low, sheathed, 

 arising from a round bulb, and bearing a single, large, fragrant, purple 

 flower. The sheaths contain a linear leaf, which sometimes appears with the 

 flower, but generally follows it. In bogs, 4'-8' high. May. 



5. Pogonia. Flowers ringent. Sepals and petals somewhat 

 spreading, not united at base. Lip crested or 3-lobed, bearded inside. 

 Column clavate, not winged at apex. Anther pedicellate. Pollen- 

 masses 2, I in each cell. 



P. OPHIOGLOSSOIDES (Adder* s-tongue Arethusa}. Stem slender, i-leaved 

 and i-bracted ; leaf situated at the middle of the stem, oval or lanceolate, 

 clasping ; flowers mostly solitary, rarely 2-3, large, pale purple or pink, 

 somewhat nodding ; lip spatulate. In meadows and bogs. June-July. 



6. Calopogon. Sepals and petals nearly equal, distinct at base. 

 Lip on the upper side of the flower, tapering to a claw or stalk, ex- 

 panded at summit, bearded above. Column free, winged at apex. 

 Pollen-masses 2, angular. 



