Part 161 (1/2)

10. Goodyera. Leaves radical, white-reticulated. Lip entire, free from the column, saccate, without callosities.

[*][*] Anther operculate, erect and jointed upon the short column. Stem stout, very leafy.

11. Epipactis. Flowers racemose; perianth spreading; lip dilated above.

[*][*][*] Anther terminal, operculate, inc.u.mbent; column elongated. Stem scapose or few-leaved; flowers large, solitary or few.

12. Arethusa. Leaf and flower solitary. Lip bearded, its base adherent to the linear column. Pollinia 4.

13. Calopogon. Leaf solitary, gra.s.s-like. Lip bearded, stalked, free.

Column winged at the apex. Pollinia 4.

14. Pogonia. More or less leafy. Lip crested, free. Column clavate.

Pollinia 2.

Tribe III. OPHRYDEae. Anther without operculum, the cells adnate to the top of the column and often continuous with the beak of the stigma.

Pollinia 2, of coa.r.s.e grains united by an elastic web, each attached at base by a stalk to a viscid gland. Flower (in ours) ringent and spurred, spicate upon a leafy stem.

15. Orchis. The two glands or viscid disks enclosed in a common pouch.

16. Habenaria. The two glands naked, either approximate or widely separated.

Tribe IV. CYPRIPEDIEae. Perfect anthers 2, lateral, the sterile one forming a dilated fleshy appendage above the terminal stigma. Pollen granular, not in ma.s.ses.

17. Cypripedium. Stems more or less leafy. Perianth spreading; lip an inflated sac.

1. MICRoSTYLIS, Nutt. ADDER'S-MOUTH.

Sepals oblong, spreading. Petals thread-like or linear, spreading. Lip auricled or ovate at base, not tubercled, entire or nearly so. Column very small, terete, with 2 teeth or auricles at the summit and the erect anther between them. Pollen-ma.s.ses 4, in one row (2 in each cell), cohering by pairs at the apex, waxy, without any stalks, threads, or gland.--Low herbs, from solid bulbs, producing simple stems, which bear in our species a single leaf and a raceme of minute greenish flowers.

(Name composed of ?????, _small_, and st????, _a column_ or _style_.)

1. M. monophllos, Lindl. Slender (4--6' high); leaf sheathing the base of the stem, ovate-elliptical; _racemes spiked, long and slender; pedicels not longer than the flowers_; lip long-pointed.--Cold wet swamps, N. New Eng. to Penn., N. Ind., Minn., and northward. July.

(Eu.)

2. M. ophioglossodes, Nutt. Leaf near the middle of the stem, ovate, clasping; _raceme short and obtuse; pedicels much longer than the flowers_; lip truncate-3-lobed at the summit, the middle lobe very small.--Low moist ground, N. Scotia to Fla., west to Minn. and Mo.

July.--Pollinia (at least sometimes) only 1 in each cell.

2. LiPARIS, Richard. TWAYBLADE.

Sepals and petals nearly equal, linear, or the latter thread-like, spreading. Lip flat, entire, often bearing 2 tubercles above the base.

Column elongated, incurved, margined at the apex. Anther lid-like, terminal; pollen-ma.s.ses 4, in one row (2 to each cell), slightly united in pairs, without stalk, threads, or gland.--Small, low herbs, with solid bulbs, producing 2 root-leaves and a low scape, which bears a raceme of few purplish or greenish flowers. (Name from ??pa???, _fat_ or _s.h.i.+ning_, in allusion to the smooth or unctuous leaves.)

1. L. liliiflia, Richard. Leaves ovate; petals thread-like, reflexed; _lip large_ (1' long), _wedge-obovate, abruptly short-pointed, brown-purplish_.--Moist woodlands, N. Eng. to Ga., west to Minn. and Mo.

June.

2. L. Lselii, Richard. Leaves elliptic-lanceolate or oblong, keeled; _lip obovate or oblong_ (2” long), mucronate, _yellowish-green, shorter than the linear unequal petals and sepals_.--Bogs, N. Scotia to Md., S.