170 LINNJSAN CLASS V. 



Ccntunculus. Calyx 4-cleft, with lanceolate segments. Corolla 4 

 lobed, persistent, with acute segments. Capsule 1-celled, many-seeded. 

 Primulacece, 95. 



Calllcarpa. Calyx small, persistent, 4-cleft. Corolla tubular, 4- 

 cl.ft. Fruit baccate, 4-celled, juicy. Purple or white. (French Mul- 

 berry.) Verbenacece, 92. 



Hypobrichia. Calyx 4-lobed, campanulate. Petals none. Stamens 

 2 — 1. Ovary globose, 2-celled, many-seeded. (Aquatic plants.) Ly- 

 thraccce, 47. 



Ammonia. Calyx 4-lobed, with 4 intermediate appendages. Co- 

 rolla wanting, or 4-petaled. Capsule 4-celled, many-seeded. (Tooth- 

 cup.) Lythracece, 47. 



Ptclea. Calyx 4-sepaled, united at the base. Petals 4, spreading. 

 Filaments hairy at the base. Fruit a samara, 2-celled. Zanthoxy- 

 lacece, 28. 



Croomia. Sepals 4, broadly oval. Petals none. Stamens 4, oppo- 

 site the sepals. Fruit ovate, compressed. Seeds 1 — 2. Peduncles 

 axillary, 2 — 3 flowered. Berberidacece, 6. 



Kratneria. Sepals 5, more or less irregular, spreading, colored. 

 Petals 4 — 5, smaller than the sepals, unequal. Stamens more or less 

 unequal. Fruit globose, 1 — 2 seeded. Polygalacece, 15. 



Order II.— DIGYNIA. 



Hamamelis. Involucre 3-leaved. Petals 4, long. (Witch-hazeL) Ha- 

 mamelacece, 60. 



Order IV.— TETRAGYNIA. 



Ilex. Calyx minute. Corolla rotate. Stigmas 4. Capsule 4-celled, 

 each cell 1-seeded. (Holly.) Aguifoliacece, 75. 



Sagina. Calyx 4-sepaled. Capsule 4-celled, many-seeded. Cary- 

 ophyllacece, 21. 



Potamogeton. Calyx 4-sepaled. Petals 0, seeds 4. Flowers in a 

 spadix. (Pond- weed.) Naiadacece, 139. 



Ruppia. Perianth wanting. Flowers on a spadix. Fruit pediceled. 

 Naiadacece, 139. 



CLASS V.— PENTANDRIA. 



Order I.— MONOGYNTA. 

 A. Flowers monopetalous, inferior. Fruit achenia. 

 Plants of this division form the Natural Order Boragincat. 



B. Flowers monopetalous, inferior. Fruit a capsule or berry. 

 1. Capsule 1-celled. 

 Anagallis. Calyx 5-partcd. Corolla rotate, 5-parted, dehiscent trans- 

 versely. Primulacftc, y.">. 



Lysimach/n. Calyx :> — fi-parted. Corolla 5— 6-parted. Capsule 

 globose, 5 — 10-valved. /'rimu/acece, 95. 



Dodecatheon. Calyx 5-parted, ivflexed. Corolla rotate, lobes re 

 flexed. Capsule ovate, 5-valved, many-seeded. Primulacea, 95. 



Hottonia. Calyx 5-parted. Corolla salver form, 5-lobed. Stamens 

 on the tube of the corolla. Capsule globose. Primulacece, 95. 



