GYNANDRIA. MONANDRlA. 9d 



SIO. MICROSTYLIS. Nutt. Gen. 719. 

 [Gr. JMici'03 Bm&ll, and Stylos, a style; in reference to the minute column, or style •] 



Petals 5, 1 deflected^ 2 inner ones filiform- Z.ip concave, erect, truncate, bidentate. S^^^e minute 

 M. oPHioGLOssoiDES. Nutt. Leaf One, ovate, amplexicaul; scape angled, sulcate; flowers small. 

 Synon- Maiaxis unifolia. Mx. M. ophioglossoides. Willd. Ell. &c. Vulgo — Adder's tongue. 

 Fl. Middle of July. Fr. mat. 



Hab. Wet, low grounds: Wollerton's: not common. 6 to 9 inches high: flowers greenish white: 



311. CORALLORHIZA. Nutt. Gen. 720. 



[Gr. Korallion, coral, and i?Ai.:a, a root; the roots resembling coral, inform.] 



Petals equal, connivent. Lip mostly produced at base. Siylt free. Pollinia 4, oblique. 



C. oDONTORHizA? Elh Root branched; scape sheathed, leafless; flowers pedicellate; capsule obovate. 



Synon. Cynibidium odontorhizon.' IVilld. Ph. Ophrys corallorbiza.' Mx. 



Fl. Latter end of July, and after. Fr. mat. Middle of October. 



Hah. Woodlands: Wollerton's, &c. frequent. 9 to 12 inches high: flowers brownish. 



Obs. I have not examined the recent plant lately, and am unable to determine, from my specimens, 

 whether this is the C odontorluza, or C- innata. 



C? HYEMALis. Ell. Leaf one, radical, lance-oval, many nerved; lip 3 cleft, not produced at base. 



6'i/iion. Cymbidium hyemale. Wilid. Muhl Ph. F«/g-o— Adam and Eve. Winter Green. 



Fl. Latter end of May. Fr. mat. Last of September. 



Hah. Rich woodlands: along Brandywine: not common. 9 to 15 inches high: flowers greenish brown. 



Obs. I think it may well be doubted whether this plant properly belongs to this genus. Pursh says the 

 root affords a cement for broken china, &c. which is "exceedingly durable;" but from the trials which 

 I have made of it, I cannot confirm his statement. 



312. CYPRIPEDIUM. Nutt. Gen. 722. 

 [Gr. Kypris, venus, and Podio«, a shoe; the inflated nectary, or lip, resembling a slipper.] 

 Petals 4, spreading, under one bifid. Lip ventricose, inflated. Style terminating in a petaloid lobe. 



C- PCBESCENs. Ell. Stem leafy; outer petals ovate-oblong, acuminate, inner ones long, linear, contorted. 



Synon. C- calceolus.' 31x. Vulgo — Noah's Ark. Yellow Mocasin flower. 



Fl. Beginning of May. Fr. mat. Middle of August. 



Hab. Rich woodlands, and low grounds: frequent. 12 to 18 inches high: petals purplish green, lip yellow. 



C. HiTMiLE. Ell Leaves radical, in pairs, oblong, obtuse; scape 1 flov/ered , with 1 bracteal leaf. 



Synon. C acaule. Mx. Fw.'g-o— Purple Mocasin flower. Lady's Slippex. 



Fl. Middle of May. Fr. mat. 



Hab. Woodlands: Great Valley hills: rare. 9 to 12 inches high: lip deep purple, large. 



Obs. I have not found this species in this immedi-ite vicinity; but some very fine specimens we?e 

 brought to me, in May last, (1825) by D. Meconkey, Esqr. who collected them near the Diamond Eock 

 io Tredyflfrin township; about 2 miles north of the Paoli. ' 



©aDER, HEXiiHBHXA. 



313 ARISTOLOCHIA. Nutt. Gen. 723. 

 £A Greek name; given on account of the medicinal virtues of the piaut-J 



Gal- 0. Cor. superior, 1 petalled, tubular; base ventricose; border dilated, Ungulate. Caps. 6 celletl. 

 A- sERPE-VTARiA- Ell- Stemflexuose; leaves cordate-oblong, acuminate; peduncles radical. 

 Vulgo— Virginia. Snake-root. Little Snake-root. Birth-wort. 

 Fl- Beginning of June. Fr. mat. Last of July. 



Hab. Rich woodlands: frequent. 9 to 15 inches high: flowers purpliah brown. 



Ohs. The valuable medicinal properties of the root of this plant are well known. 



Mr. Wm. Jackson sent me specimens from Londongrove township, in this county, which appear to be 

 the A. m^ittata, of Muhlenberg, or A. hastata, of Nuttall, and Elliott. The ieavM are sublanceolate, 

 acute, auriculatc at base, and oubescent. ' 



