690 ORDER 138. ORCHIDACE^l. 



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 Ivs. 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. CALOPCTGON, Brown. GRASS PINK. (Gr. oA6f, beautiful, 

 Trcjywv, 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 tho 

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

 with several showy fls. 



C. pnlchelltis Br. Lf. radical, lin car-ens i form, 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 ') sheathing its base. Pis. 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 tho 

 upper side of tho flower, while tho column is below! Jn.. Jl. (Cymbidium 

 WilkL) 



17. POGO'NIA, Juss. (Gr. 7rc5ywv, beard ; in allusion to the bearded 

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

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

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



Sepals about equal, and similar to tho petals, light purple. Lip scarcely lobcd Nos. 1, 2 



Sepals much longer than, and unlike the petals, dark brown. Lip 8-lobed Nos. 3, 4 



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

 and a foliaceous bract near tho single flower ; sap. 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 Ivy. The stem is very 

 slender 9 1C' high, with 2 remoto leaves, the one placed about midway, 2 3' 

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

 situated near the fio\yer. Flower large, nodding, pale purple. Lip long as petals 

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



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

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

 lobed, the middle lobes undulate. Swamps, Can. to Ga. (Mr. Wm. 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. Tho 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; Up. entire, scabrous, 

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

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

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

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

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



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

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

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

 ceolate, acuminate petals ; lip spatulate, 3-lobed, middlo 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 V SA, Gronov. (Arethusa, a nymph of Diana, transi 



