690 ORDER 138. ORCHIDACE^E. 



lip roundish-ovate, with a narrow, abrupt, recurved point ; column rounded and 

 obscurely 2-toothed at apex; spike dense, with the fls. spirally arranged, pubes- 

 cent. Woods, Can. and U. S., with its several lys. radical and singularly mottled 

 with white and dark green. St. 6 to 12' high. Lvs. 1 to 2' long, contracted into 

 a short, winged petiole. Spike 2 to 4' long. Perianth greenish, about 2" long, 

 nearly as wide. Jn., Jl. 



16. CALOPO'GON, Brown. GRASS PINK. (Gr. KaAog, beautiful, 

 Trdjywv, beard ; in allusion to the bearded lip.) Sepals and petals simi- 

 lar, distinct ; lip on the upper side of the flowers (the* ovary not twisted 

 as in other Orchids), unguiculate bearded ; column free, winged at the 

 summit ; pollen angular. Conn bearing a grass-like If., a naked scape 

 with several showy fls. 



C. pulchellus Br. Lf. radical, lincar-ensiform, veined ; scape few-flowered ; lip 

 erect, narrowed at base, with an expanded border and a concave, crested disk. 

 A beautiful plant, in swamps and damp meadows, U. S. and Can. Scape slender, 

 10 to 20' high, with a long leaf (8 to 12' by J') sheathing its base. Fls. 3 to 8, 

 large, purple, remarkable for their apparently inverted position ; lip expanded at 

 apex, spatulate, crested with white, orange and purple clavate hairs, and on the 

 upper side of the flower, while the column is below! Jn., Jl. (Cyinbidium 

 Willd.) 



17. POGO^NIA, Juss. (Gr. 7re5yo)i>, beard; in allusion to the bearded 

 lip.) Perianth irregular, sepals and petals distinct ; lip sessile or un- 

 guiculate, cucullate, bearded inside; column wingless, elongated, free ; 

 pollinia 2, farinaceous. Habit various. Lvs. 1 or more. Fls. purple. 



Sepals about equal, and similar to the petals, light purple. Lip scarcely lobed Nos. 1, '2 



Sepals much longer than, and unlike the petals, dark brown. Lip 3-lobed Nos. o, 4 



1 P. ophioglossoides Br. Rt. fibrous ; St. furnished with an oval-lanceolate lea} 

 and a foliaceous bract near the single floiuer ; sep. and pet. about equal ; lip. fim- 

 briate. An interesting plant, much taller than the bulbous Arethusa. found in 

 swamps and muddy shores, Can., N. Eng. to Car. and Ky. The stem is very 

 slender 9 16' high, with 2 remote leaves, the one placed about midway, 2 :>' 

 long, lanceolate, acute, sheathing at the base ; the other (a bract) much smaller, 

 situated sear the flower. Flower large, nodding, pale purple. Lip long as petals 

 and sepals (f ') June. (Arethusa L.) 



2 P. verticillata Xutt. Lvs. 5, lance-oval verticillate ; fl. solitary, the 3 outer 

 petals very long, linear, inner ones nearly thrice shorter, lanceolate, obtuse; lip 3- 

 lobed, the middle lobes undulate. Swamps, Can. to Ga. (Mr. "Wra. Jones), common. 

 Stem 8 12' high, with a whorl of leaves near the top and a flower 1 2' above it. 

 Leaves \\' long, as wide, abruptly acuminate. The flower is remarkable for 

 its sepals being above 2' long, very narrow, and of a greenish-brown color. Lip 

 crested in the middle. July. (Arethusa Willd.) 



3 P. pendula Lindl. THREE-BIRDS. Rt. tuberous; st. leafy, about ^-flowered at 

 the top ; Ivs. clasping, ovate, alternate ; fls. axillary nodding ; lip. entire, scabrous, 

 not bearded ; fr. pendulous. A small, delicate plant, in swamps, Mid. and W. 

 and S. States. St. scarcely 6' high, slightly angled, with about 3 fls. which with 

 the ovary are 1' long. The fruit often resembles 3 little birds. Lvs. 3 to G, 4 to 8" 

 long, purplish. Fls. light purple, the segments of the perianth equal, converging, 

 and rather longer than the lip. Aug. (Triphora Nutt.) 



4 P. divaricata R. Br. Lvs. 2, one of them in the middle of the stem, lanceolate- 

 linear, subfalcate, the other terminal, bract-like, at the base of the single, large. 

 flower; sep. narrow, wide-spread, recurved at apex, one third longer than the lan- 

 ceolate, acuminate petals ; lip spatulate, 3-lobed, middle lobe rounded, cuspidate ; 

 lateral lobes somewhat involute. A fine, showy plant, near 2f high, in grassy 

 swamps, Va. to Fla. and La. Lf. 2 to 4' by 3 to 5", rather oblong than lance- 

 shaped, the bract scarce half as large. Petals 1' long, pink, sep. 18", brownish- 

 purple. Lip green, with purple veins. Apr., May. 



18. ARETHU'SA, Gronov. (Arethusa, a nymph of Diana, transf 



