GYNANDRIA— MONANDRIA. Orchis. 9 



* Knobs of the root roundish, undivided. 

 1. O. bifolia. Butterfly Orchis. 



Knobs of the root oval, taper-pointed. Lip of the nectary 

 lanceolate, entire, about half the length of its very long 

 spur. Lateral calyx-leaves spreading downwards. 



O. bifolia. Linn. Sp. PL 1331. Wiltd.v.4. 10. Fl.Br. 9\8. Engl. 



Bot. v.\.t. 22. Curt. Lond.fasc. 6. 1. 65. Dicks. H. Sice. fasc. 



3. 16. 

 O. n. 1285. Hall. Hist. v. 2. 146. t. 35./. 2. 

 O. bifolia altera. Bauh. Fin. 82. Rudb. Elys. v. 2. 197./ 2j bad. 

 O. hermaphroditica bifolia. Bauh. Hist. v. 2. 772./ Raii Syn. 380. 

 O, hermaphroditicaj also Testiculus psycodes. Ger.Em. 211.//. 

 O.serapias primus. Dod. Pempt. 237./ Dalech. Hist. 1554./ 

 Satyrion trifolium. Fuchs. Hist. 710./ Ic. 408./ 

 Testiculi species tertia. Matth. Valgr. v. 2. 333./ 2. 

 T. species quinta. Camer. Epit. 625./ 

 Testiculus vulpinus. Besl. Hort. Eyst. vern. ord. 7. t. 6./ 1. 

 T. vulpinus primus 5 also Hermaphroditica secunda. Lob. Ic. 1 78- 



fj- 

 Habenaria bifolia. Br. in Ait. Hort. Kew. v. 5. 193. Hook. Scot. 



252. 

 /3. Orchis bifolia. Fl. Dan. t. 235. 

 O. alba bifolia minor, calcari oblongo. Bauh. Pin. 83. Raii Syn. 



380. Rudb. Elys. v. 2. 198./ 3. Vaill. Par. 151. t. 30./ 7. 



Segu. Feron. v. 2. 128. ^ 15./ 10. 

 O. alba, calcari longo. Bauh. Hist. v. 2. 771. f. 

 O. flore albo minor. Besl. Hort. Eyst. cBst. ord. 4. t. 5./ 4. 



In groves and thickets 5 most plentiful in Beech woods. 



/3. On open heaths. 



Perennial. June. 



Knobs of the root each tapering into a fibrous point. Stem angu- 

 lar, about a foot high, often more. Leaves usually two, spread- 

 ing, elliptical, 3 inches long, of a bright shining unspotted 

 green 5 very rarely accompanied by a third, smalle'i- and more 

 upright. Bracteas lanceolate, about as long as the germen, one 

 to each flower, besides a few larger, scattered along the stem. 

 Flowers numerous, in a rather loose spike, pure white, except a 

 greenish tinge on the lip and spur. The latter is rather tumid 

 towards the end. Lip linear-oblong, about the size of the calyx- 

 leaves, straight. Cells of the anther widely separated, by the 

 semicircular abrupt termination of the style. Pollen-masses yel- 

 low, club-shaped, erect, each attaching itself to a gland-like 

 naked tubercle, at each side of the centre of the flower, but 

 sticking likewise to various parts of the plant occasionally. 



The glands which receive the pollen being separated, and naked, 

 or destitute of any cell or pouch, afl'ord the distinctive character 



