ORCHIDACEiE. 879 



guished from the following by its more slender habit, greenish flowers, and 

 the entire (not fringed) petals. July. Ragged Orchis. 



13. 0. PsYCODES. L. O. fimbriata. £r. Habenaria. iJi'rf. Platanlhera. iindJ. 

 Loicer leaves lanceolate, diminishing upwards; Lip 3-parted, scarcely longer 



than the petals, the segments cuneiform, ciliate-fimbriate ; lateral petals ovate, 

 fimbriate-dentate ; spur filiform, clavate, longer than the ovary. A beautiful 

 plant, very common in meadows, &c. Stem l^ — 2^ feet high, smooth, slen- 

 der. Leaves 3 — 6 inches long. Flowers showy, numerous, in a terminal, 

 cylindric spike, light-purple. Lip of the nectary somewhat longer than the 

 petals, its 3, fan-like, spreading segments, as well as the petals, beautifully 

 fringed. Spur an inch in length. July. ['ringed Purple Orchis. 



14. 0. GRANDIFLo'RA. Bw. Habenaria. Torr. Platanlhera fimbriata. Ltnrf/. 

 Lower leaves oblong, oval, obtuse, upper ones very narrow ; bracts shorter 



than the ovary ; raceme oblong ; lip dependent, twice as long as the petals, 

 3 parted, the segments cuneiform and fimbriate, the middle one largest, with 

 connivent fimbria!; lateral /^c/o/s fimbriate ; .<;/?»7- ascending, clavate, longer 

 than the ovary. A superb plant, considered the most beautiful of the genus, 

 in wet meadows, &c. Stem 2 — 3 feet high, thick, hollow, with several 

 sheathing bracts at base. Leaves 2 or 3 principal ones, 4 — 7 inches long, 

 1 — 2 wide, upper ones linear, an inch or two long. Flowers very large 

 purple, in a terminal raceme 3 — 6 inches long. Middle seg. of the lip, nearly 

 semicircular, twice as long as the lateral ones. Jn. Largc-floxccrivg Orchis. 



§ § § Pollen powdery, or consisting nf loosely cohering granules. 

 8. ARETHU'SA. 

 Perianth with its segments cohering at base ; lip spiirless, 

 adnate to the column at base, deflected at the end and beard- 

 ed inside ; pollen angular. 



Arcthusa was a fabulous nymph of Diana, who was transformed into a 

 fountain. These fine little plants are inhabitants of wet places. 



A. BULBO'SA. 



Leafless; root producing a globular tuber; scape sheatiied, 1 -flowered. 

 This beautiful and interesting plant is found only in wet meadows and swamps. 

 Stem C — 12 inches high, invested with about 3, long, loose sheaths with 

 lanceolate points, the upper ones rarely at length produced into a short, linear- 

 spathulate leaf At the top is a single, large, fragrant flower of a rich purple 

 color. A little below the base of the flower is a small spathe of 2 unequal 

 bracts. June. Bulbous Jirclhusa. 



9. POGO'NIA. 

 Perianth with its segment distinct; lip sessile, cucullate, 

 bearded inside; pollen farinaceous. 



Gr. TTioyiDv, beard ; in allusion to the bearded lip. 

 1. P. orphioglossoi'des. Arethusa. L. 



iiooi fibrous; s^em furnished with an oval-lanceolate leaf and a foliaceous 

 bract near the flower; lip fimbriate. An interesting plant, much taller than 

 the bulbous Arethusa, found in swamps and muddy shores. The stem is very 

 slender, 9 — 16 inches high, with 2 remote leaves, the one placed about mid- 

 way, 2 — 3 inches long, lanceolate, acute, sheathing at the base ; the other (a 

 bract.') much smaller, situated near the flower. Flower large, nodding, pale 

 purple. Lip long as petals and sepals (| inch). Jn. Adder s-tonguc Arethusa. 



