16. CALOPO'GON, Brown. Grass Pink. (Gr. beautiful, beard; in allusion to the bearded lip.) Sepals and petals similar, 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. - Corm bearing a grass-like If., a naked scape with several showy fls.
C. pulchellus Br. Lf. radical, linear-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 1/2') 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. (Cymbidium Willd.)
17. POGO'NIA, Juss. (Gr. beard; in allusion to the bearded lip.) Perianth irregular, sepals and petals distinct; lip sessile or unguiculate, 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...........
§ Sepals much longer than, and unlike the petals, dark brown. Lip 3-lobed...............
1 P. ophioglossoides Br. Rt. fibrous; St. furnished with an oval-lanceolate leaf and a foliaceous bract near the single flower; sep. and pet. about equal; lip. fimbriate. - 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 - 3' 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 (3/4') Juno. (Arethusa L.)
2 P. verticillata Nutt. 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. Wm. Jones), common. Stem 8 - 12' high, with a whorl of leaves near the top and a flower 1 - 2' above it. Leaves 1 1/2 long, 1/2 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; si. leafy, about 4-flowered at the top; lvs. 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 6, 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 lanceolate, 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, trans formed to a fountain.) Perianth somewhat ringent; sepals and petals cohering at the base; lip spurless, adnatr to the column at base, deflected at the end, and bearded inside; pollinia 4, angular. - St. low, sheathed, 1-flowered, arising from a corm or bulb imbedded in moss.
A. bulbosa L. This beautiful and interesting plant is found in wet meadows and swamps Can. to Va. W. to Wis. Stem 6 - 12' high, invested with about 3 long, loose sheaths, with lanceolate points, the upper ones rarely at length produced into a short linear-spatulate leaf. At the top is a single, large, fragrant flower of a rich purple color. At the base of the flower is a small spathe of 2 unequal bracts. June.
19. EPIDEN'DRUM, Swartz. Tree Orchis. (Gr. upon,
a tree.) Sepals and petals spreading; lip united with the column and forming a tube which is sometimes decurrent on the ovary; anther terminal, opercular; pollinia 4, separated by complete, persistent partitions, and each narrowed at base into a reflexed, elastic pedicel. - Epiphytic plants, vegetating in air and the scanty soil lodged in the bark of trees. Sts. few-leaved at base, naked and many-flowered above.
E. conopseum H. K. Sts, tufted, 2-leaved simple; lvs. coriaceous, oblong-lanceolate, acute or mucronate, sessile; fls. 3 to 7, spicate, erect, yellow; lip 3-lobed, middle lobe obcordate, spreading as well as the narrow-linear, obtuse petals. - Chiefly on the Magnolia grandiflora, in damp woods, low country, S. Car. to Fla. and farther West. Root an entangled mass of thick fibers. Sts. in clusters, 5 to 8' high. Lvs. 1' to 18" long. Fls. expanding 5 or 6", tinged with purple, Aug., Sept.