LINN^EAN SYNOPSIS OF GENERA. Xxi 



Order III. TRIGYNIA. 



121. MONTIA. Cal. of 2 leaves. Cor. of 1 petal. Caps. 3- 



valved, 3-seeded. 

 124. POLYCARPON. Cal. of 5 leaves. Pet. 5. Caps. 1 -celled, 



3-valved. 



52. HOLOSTEUM. Cal. of 5 leaves. Pet. 5. Caps. 1 -celled, 

 opening with 6 teeth at the end. 

 (Tillcea, N.O. 34.) 



Class IV. TETRANDRIA. 



Order I. MONOGYNIA. 



* Perianth double. Cal. double ; inner adnate to thefr. 

 Cor. monopetalous. 



162. Nat. Order 44. DIPSACACE^E. 



** Perianth double. Cal. single. Cor. monopetalous, inferior. 



272. PLANTAGO. Segments of cor. reflexed. Stam. very long. 

 222. CICENDIA. Cor. salvershaped, spreading. Stam. included. 



Caps, opening at the top by two valves. 

 269. CENTUNCULUS. Cor. tubular, spreading. Stam. included. 



Caps, bursting transversely. 

 (Gentiana, N.O. 51.) 



*** Perianth double. Cal. single. Cor. monopetalous, superior. 

 155. Nat. Order 43. RUBIACE.E. Limb of the cal. often ob- 

 solete. :* 



**** Perianth double. Pet. 4. 



13. EPIMEDIUM. Cor. inferior. 

 152. CORNUS. Cor. superior. Cal. 4-cleft. 



(Cardamine, N. O. 6. Senebiera, N. O. 6. Euony- 



mus, N. O. 23.) 

 155. LINN^A. Cor. superior. Cal. 5-cleft. 



***** Perianth single. 



328. MAIANTHEMUM. Perianth petal-like, 4-parted, inferior. 

 92. ALCHEMILLA. Perianth a calyx, inferior, 8-parted; 4 seg- 

 ments larger than the alternate ones. 

 91. SANGUISORBA. Perianth a calyx, inferior, 4-parted. Stam. 



inserted on a ring closing the tube. 

 292. PARIETARIA. Perianth inferior, 4-parted, bellshaped. 



Stam. at its base. 

 119. ISNARDIA. Perianth superior, 4-parted, persistent. 



