182 LINN^AN CLASS X. 



Hypopitys. Calyx none. Petals erect, oblong. Stamens shorter 

 than the petals. ' Ovary sub-globose, 4 — 5-anglecl, many-seeded. 

 Flowers in a terminal raceme. (Parasite.) Ericaceae, 72. 



Order II.— DIGYNIA. 



Hydrangea. Calyx 5-toothed. Flowers futile or sterile. Calyx of 

 the sterile flowers membranaceous, colored, flat, dilated. Petals 5, 

 ovate, sessile. Capsule 2-celled, many-seeded. (Shrubs.) Saxifra- 

 (jacece, 59. 



Saxifraga. Sepals 5, more or less united. Petals 5. Capsule 2- 

 relled, 2-beaked, opening by a hole between the beaks. Saxifragacece, 

 19. 



Saponaria. Calyx tubular, 5-toothed. Petals 5, unguiculate. Cap- 

 »ule oblong, 1-celled, 2-valved. Caryophyllacece, 21. 



Dianthus. Calyx inferior, cylindrical, with several bracts at the 

 6ase. Petals 5, with claws. Capsule cylindrical, 1-celled, dehiscing at 

 ihe top. Caryophyllacece, 21. 



Astilbe. Tiarella. Calyx eampanulate, 5-parted. Petals 5. Sta- 

 mens exserted. Anthers cordate. Capsule 2-celled. Flowers in 

 pani(des. Leaves compound. Saxifragacece, 59. 



Order III.— TRIGYNIA. 



Silene. Sepals usually 5, inserted into a tube. Petals 5, unguicu- 

 late, with long claws, crowned at the summit of the claw. Limb 2- 

 cleft. Capsule 3-celled, opening at the apex with G teeth. Caryo- 

 phyllacece, 21. 



Stellaria. Sepals 6, expanding. Petals 5, 2-parted. Capsule 3- 

 valved, 1-celled, many-seeded. Caryophyllacece, 21. 



Arenaria. Sepals 5, expanding. Petals 5, entire. Carpels 3-valved, 

 1-celled, many-seeded. Caryophyllacece, 21. 



Order V— PENTAGYXIA. 



Spergtda. Sepals 5. Petals 5, entire. Capsule 3 — 5-valved, many- 

 seeded. Seeds compressed, orbicular, or reniform. Illecebracece, 20. 



Ceraativm. Sepals 5. Petals 5, 2-cleft, or emarginate. Capsule 1- 

 celled, 5-valved, dehiscing at the apex, with 5 or 10 teeth. Caryo- 

 phyllacece, 21. 



Lychnis, Agrostema, or Githago. Calyx tubular, 5-sided. Petals 5, 

 unguiculate ; limb entire. Capsule 1-celled, or partly 6-celled. Caryo- 

 vhyllacece, 21. 



Oxalit. Sepals 5. Petals 5. Alternate stamens longest. Capsule 

 fi-angled. Seeds few, rugose. Oxalidacece, 26. 



Penthorxim. Calyx 5-cleft. Petals 5, or none. Carpels 5, united 

 into a 5-angled, 5-celled capsule, with 5 diverging beaks. Seeds nume- 

 rous, minute. Crassidacece, 58. 



Sedum. Calyx 5-cleft, inferior. Petals 4 — 5. Pods many-seeded , 

 a little scale at the base of each. Crassulacece, 58. 



Order X.— DECAGYNIA. 



Phytolacca. Perianth 5-parted, petaloid. Ovary lO-celled, 1 ovule 

 in each cell. Fruit indehiscent, (Pokeweed,) Phytolaccaceo!, lOl. 



