182 LINN JEAN CLASS X. 



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

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

 Flowers in a terminal raceme. (Parasite.) Ericacece, 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, mauy-seeded. (Shrubs.) Saxi/ra- 

 gaccce, 59. 



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

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

 59. 



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

 sule oblong, 1-celled, 2-valved. Caryophyllaceiv, 21. 



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

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

 the top. Caryophyllacew, 21. 



Aslilbc. Tiarella. Calyx campanulate, 5-parted. Petals 5. Sta- 

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

 panicles. 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 6 teeth. Caryo- 

 phyllacea', 21. 



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

 valved, 1-celled, many-seeded. Caryophyllacea?, 21. 



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

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



Order V.— PENTAGYNIA. 



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

 seeded. Seeds compressed, orbicular, or reniform. Illecebracea*, 20. 



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

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

 phyllacea; 21. 



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

 unguiculate ; limb entire. Capsule 1-celled, or partly 5-celled. Caryo- 

 phyllacccc, 21. 



Oxali*. Sepals 5. Petals 5. Alternate stamens longest. Capsule 

 5-angled. Seeds few, rugose. Oxalidacecr, 26. 



Penthorum. Calyx 5-cIeft. Petals 5, or none. Carpels 5, united 

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

 rous, minute. Grasntlaoea . 



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

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



deb X.— DECAGYNIA. 



Phytolacca. Perianth 5-parted. p.taloid. Ovary 10-celled, 1 ovule 

 in each cell. Fruit indebiscent (J'okeweed.) Phytolaccacear, 101. 



