LXViii LINNAEAN ARRANGEMENT. 



GONOLOBUS. Calyx 5-parted. Corolla rotate, deeply 5-parted. 

 Crown a small wavy-lobed ring in the throat of the corolla. Anthers 

 partly hidden under the flattened stigma, opening transversely. 

 Pollen-masses 5 pairs, horizontal. Follicle turgid, somewhat ribbed, 

 and softly muricate. Seeds comose. ORD. LXXIII. ASCLEPIA- 

 DACEAE. p. 237. 



b. Corolla pentapetalous. 



HEUCIIERA. Calyx 5-cleft, persistent. Petals small, inserted at 

 the clefts of the calyx. Capsule 2-beaked, opening between the 

 beaks, 1-celled. ORD. XLII. SAXIFRAGACEAE. p. 96. 

 2. Flowers incomplete. 



CHENOPODIUM. Calyx 5-parted, the segments often keeled, embrac- 

 ing the fruit, but not adhering to it. Utricle thin, membranaceous. 

 Seed 1, horizontal, lenticular, embryo forming a ring round the 

 albumen. ORD. LXXVII. CHENOPODIACEAE. p. 242. 



AMBRINA. Characters nearly as in Chenopodium, but the calyx- 

 segments usually not keeled. Seed sometimes vertical; embryo not 

 forming a complete ring. ORD. LXXVII. CHENOPODIACEAE. p. 242. 



BETA. Calyx urceolate, 5-cleft, the base slightly adherent to the 

 fruit, finally indurated. Ovary depressed. Utricle immersed in 

 the base of the calyx, and covered by the segments. ORD. LXXVII. 

 CHENOPODIACEAE. p. 243. 



ULMUS. Calyx 5- to 8-cleft. Ovary compressed, ovate, 2-celled. 

 Samara 1-celled, 1-seeded; margin broad. ORD. LXXXV. ULMA- 

 CEAE. p. 255. 



CELTIS. Monoicously polygamous : Calyx deeply 5- or 6-parted. 

 Ovary ovoid, 1-celled. Drupe globular. ORD. LXXXV. ULMA- 

 CEAE. p. 256. 



B. OVARY INFERIOR : Corolla pentapetalous. PLOTTERS ix UMBELS. 

 a. Umbels simple, f Fruit more or less baccate. 



PANAX. Dioicously polygamous : CaZ?/x-teeth obsolete. Fruit drupe- 

 like, or subcoriaceous, 2- or 3-lobed, 2- or 3-celled. ORD. XLV. 

 ARALIACEAE. p. 109. 



f f Fruit dry twin carpels. TRUE UMBELLIFERAE. 



HYDROCOTYLE. Fruit laterally compressed, orbicular; carpels 5- 

 ribbed, the lateral ones enlarged ; vittae none. ORD. XLIV. 

 UMBELLIFERAE. p. 99. 



b. Flowers in compound Umbels. 

 4=> The Genera of this division all belong to ORD. XLIV. UMBELLIFERAE. jx 98. 



[Anychia dichotoma. ORD. XVI. CARTOPHYLLACEAE. p. 34.] 

 [Polygonum amphibium, & Virginianum. ORD. LXXIX. POLYGONACEAE. p. 246 7.] 



Order 3. Trigynia. 



a. Ovary inferior : Corolla monopetalous. 



VIBURNUM. Calyx 5-toothed. Corolla subcampanulate, 5-lobed. 

 Fruit a drupe, with scanty pulp, and a crustaceous flattened nut. 

 ORD. XLVII. CAPRIFOLIACEAE. p. 115. 



