500 ORCHIDACEiE. (ORCHIS FAMILY.) 



elongated and often loose, the upper bracts shorter than the flowers; which 



are (juitc small, and with scarcely a tinge of yellow, drying brownish. — The 



Siberian II. (renilaria) fuscescens is clearly distinct. 



§ 3. PLATANTH^RA, Richard. Cells of the anther sometimes parallel, morerom- 

 monlji (liverrjent, so that their tapering bases and the exposed f/lunds are more or 

 less distant. (Root a duster of Jleshij fibres, or tuberous-thickened.) 



* Flowers greenish or tchitc, small, numerous in a close spike: spur not longer than the 



entire or mcrehj notched narrow lip : anther-cells almost parallel , wholly adnute ; 

 stem leafy. 

 t- Spur short and sac-like : the 3 sepals and 2 narroiu petals erect : glands small, 

 rather widely separated. (PEnfsTYLUS, Lindl.) 



4. H. viridis, R- Br., var. braeteata, Reichenbach. Lower leaves obo- 

 vatc, the nj)])er oblong and gradually reduced to lanceolate acute bracts 2-4 

 times the length of the green flowers; spike 10-30-flowered ; lip oblong-linear 

 or slightly spatulate, truncate and 2-3-toothed or lobcd at the tip, more than 

 twice the length of the spur. (H, braeteata, R. Br.) — Stem 6' -12' high. 

 According to Mr. Darwin, in the common European H. viridis each gland is 

 protected by a minute pouch : this is not yet verified in ours. — Damp woods, 

 especially northward. (Eu.) 



•<- H- Spur slender, incurved, about as long as the entire lip : lateral sepals spreading. 



5. H. hyperbdrea, R. Br. Stem very leafy (G'-2° high) leaves lanceo- 

 late, erect; spike dense (2' -15' long) ; lower bracts lanceolate, long'er than the 

 {greenish) flowers; lip and petals lanceolate, somewhat equal, the latter spreading 

 from the base; anther somewhat overhanging the transversely dilated stigma; 

 glands orbicular ; stalk of the pollen-masses very slender and weak. (P. hyper- 

 borea, Huronensis, &c., Lindl.) — Peat-bogs and wet cold woods : common north- 

 ward. June, July. (Eu.) 



6. H. dilat^ta, Gray. (That of Hook, Exot. Fl. is the preceding.) Re- 

 sembles No. 5, but usually more slender, with narrower commonly linear leaves; 

 flowers white; lip lanceolate from a rhomboidid-dilated base, entire, its base with the 

 bases of other petals and sepals erect-connivent, above spreading; anther-cells 

 almost parallel ; glands approximate, laige and strap-shaped, x-erticat, nearly as long 

 as the pollen mass and its short flat stalk together; stigma narrow; a trowel- 

 shaped conspicuous beak (rostellum) between the bases of the anther-cells. 

 (Orchis dilatata, Pursh.) — Cold bogs : common northward. June, July. 



* * Flowers greenish or white and purple, few or several (5-15) in a loose spike, 



rather larqe for the size of the plant: scape or stem naked above, l-teaved at the 

 io.s« (5' -9' high) : .ipur not longer than the lip: anther-cells wholly adnate. 



7. H. rotundifblia, Richardson. Leaf varying from almost orbicular to 

 oblong (lV-3' long) ; flowers rose-purple ; or the lip white and spotted with pur- 

 ple, S-lobed, and the larger middle lobe dilated and 2-lob(d or strongly notched at the 

 summit (4" -6" long), exceeding the ovate-oblong petals and sepals, and the 

 slender depending sjjur; anther-cells contiguous iir.d parallel. (O. rotundifolia, 

 Pursh.) — Damp woods and bogs, N. Maine, Mr. Goodrich; Warren, Herkimer 

 Co., New York, .7. A. Paine; shore of L. Michigan in Wisconsin, Lewis Fuote, 

 and northward. June. 



