172 GYNANDRIA MONANDRIA. [CI. 20. 



Order III. HEXANDRIA. Stamens, or sessile An- 

 thers, 6. 



422. ARISTOLoCHIA. Calyx of 1 leaf. Corolla 0. Stigma 

 with 6 lobes. Caps, of 6 cells. — Nat. Ord. AiusTOLOCHiEiE. 



GYNANDRIA MONANDRIA. 



411. ORCHIS. Orchis. 

 * Knobs of the roots roundish, undivided. 



1. O. bifolia, Habenaria bifol. Br. Fl. (Butterfly O.) Spur filiform, 



twice as long as the germen. Lip linear, entire. Upper calyx- 

 leaf and the lateral petals connivent. Root leaves 2, oblong- 

 obovate, attenuated at the base. 



Groves. If. 6. Stem 1 — \^f Fl. white, fragr. in the evening. 

 L. ellipt. 

 *l. O. chlordntha, O. bifol. E. Bot. t. 22. and E. Fl. Habenaria 

 chlor. Br. Fl. (Yellow Butterfly O.) Spur half as long again as 

 the germen. Lip ovate-lanceolate, scarcely longer than the 

 petals. Stalk-leaves lanceolate ; root-leaves 2 obovate, patent. 



Kent. "U . 5. Plant stouter. Fl. greener. 



2. O.pyramiddlis, 2. 110. (Pyramidal O.) Knobs of the root oval. 



Lip of the nectary in three equal entire lobes, with two protu- 

 berances above ; spur long and slender. 

 Grassy chalky pi. If. 7. Fl. crimson, fragrant. Spike pyramidal. 



3. O. Morio, 29. 2059. (Meadow O.) Knobs of the root oval. Lip 



of the nectary four-cleft, somewhat crenate ; spur obtuse, ascend- 

 ing. Calyx many-ribbed, converging. 

 Moist mead, and past. If . 5, 6. Leaves unspotted. Fl. purple or 

 pale, with green lines. 



4. O. mdscula, 9. 631. (Purple O.) Knobs of the root oval. Lip of 



the nectary four-cleft, crenate ; spur obtuse. Calyx-leaves three- 

 ribbed ; two lateral ones reflexed upwards. 

 Mead. & past. If . 4, 5. L. spotted with black. Fl.purp. Cal.3-rib. 



5. O. ustuldta, 1. 18. (Dwarf O.) Knobs of the root oval. Lip of 



the nectary four-lobed, rough with small points. Spur obtuse, 



not half the length of the germen. Calyx converging. Leaves 



lanceolate. 

 Chalky hills, Eng. If. 6. 3 — 4 in. Cal. blackened; its leaflets distinct. 

 Q. Ofusca, O. militaris, 1. 16. (Brown-winged O.) Knobs of the 



root oval. Lip of the nectary five-lobed, dilated, rough. Spur 



obtuse, not half the length of the germen. Calyx converging, 



blunt-pointed. Leaves elliptic-oblong. 

 Chalky bushy hills ; Kent. If. 5. Large. Cal, dark br. Cor. reddish. 

 7. O. militaris, Suppl. 2675. (Military O.) Knobs of the root oval. 



Lip of the nectary five-lobed downy ; two middle lobes dilated, 



