ORCHIDACE^. (orchis FAMILY.) 4G1 



8. P. flmbriata, Lindl. Stem stout ; leaves oval or oblong, obtuse, a few 

 of the upper ones small and lanceolate like the bracts ; raceme oblong, rather 

 loosely flowered ; flowers large, pale purple ; lateral sepals ovate, acutish ; pet- 

 als oblong, denticulate on the margins ; lip twice as long as the sepals, spread- 

 ing, the broad wedge-shaped lobes long-fringed ; spur longer tlian the ovary. — 

 Wet meadows. North Carolina, and northward. June. — Stem 2° -.3° high. 

 Loaves 4'- 6' long. Flowers not numerous on the raceme. Lip 6"- 9" long. 



9. P. peraraoena, Gray. Stem stout ; lower leaves oblong, obtuse, the 

 upper lanceolate like the bracts; raceme oblong, rather loosely' flowered ; flow- 

 ers large, violet-purple; lateral sepals broad-ovate; petals round-obovate, mi- 

 nutely denticulate ; lip spreading, the wedge-shaped lobes finely toothed, entire, 

 or the middle one 2-lobed ; spur longer than the ovary. (Orchis fissa, Pursh.) 

 — Mountains of Nortli Carolina, and northward. July. — Stem 2° -4° high. 

 Lip 9" long. 



14. HABENARIA, Willd. 



Sepals nearly equal, the lateral ones reflexed. Petals entire or 2-3-parted. 

 Lip pendent, entire, or 2 - 3-parted, spurred. Anther-cells erect, separate, diverg- 

 ing. Stigma bearing two various-shaped appendages. Glands naked. Pollen- 

 masses 2, waxy, stalked. — Herbs with tuberous roots, leafy stems, and spiked 

 flowers. 



1. H. repens, Nutt. Root a creeping tul)er ; stem erect or ascending, very 

 leafy ; leaves lanceolate, acute or acuminate, 3-ribbed ; spike slender, many-flow- 

 ered ; bracts lanceolate, the lower ones longer than the flowers ; lateral sepals 

 oblong, acute, the upper one ovate, erect ; petals unequally 2-parted, the lower lobe 

 capillary, longer than the linear upper one ; lip 3-parted, barely longer than the 

 sepals, the lateral lobes capillary, the middle one filiform ; spur as long as the 

 ovary ; appendages of tlie stigma tubercular. — Swamps and ditches in the lower 

 districts, Florida to North Carolina, and westward. Aug. and Sept. — Stem 1° - 

 2° long. Leaves 6'- 12' long. Spikes ^° - 1° long. Flowers small, greenish. 



2. H. Michauxii, Nutt. Root a globular watery tuber; stem erect; leaves 

 oval or oblong, mostly acute, many-nerved, the upper smaller, and similar to the 

 ovate-lanceolate clasping bracts ; spike slender, loosely fjw-flowered ; lateral 

 sepals oblong-ovate, acute, the upper one ovate, erect ; petals unequally 2-parted, 

 the lower lobe capillary and twice as long as the lanceolate upper one ; lip twice 

 as long as the sepals, 3-parted, the capillary lateral lobes longer than the linear 

 middle one ; spur twice as long as the ovary ; appendages of the stigma tuber- 

 cular. — Dry sandy or gravelly soil, Florida, to South Carolina. August. — 

 Stem 6'- 18' high. Leaves 2' -3' long. Spike 3'- 5' long. Flowers white, 

 twice as long as those of the preceding. 



15. SPIRANTHES, Richard. Twistkd Orchis. 



Sepals and petals nearly equal ; the lateral sepals diverging, dilated at the base, 

 the upper one connivent with the petals. Lip clawed, concave, furnished with 

 two callosities near the base, clasping the short column below. Stigma ovate, 

 39* 



