302 DICOTYLEDONOUS. 



acute at each end, with the petiole and under surface pubescent. Flotoers in 

 small umbellate clusters. Sterile florets numerous, fertile florets 5-8 in an 

 umbel. Drupe nearly spherical, bluish black. Black gum* 



h April. Damp soils. 40-50 ft. 



2 N Aquatica. a small, or large tree. Leaves oblong lanceolate, entire, 

 glabrous, acute at each end, slightly pubescent beneath. Sterile florets nu- 

 merous, small ; fertile florets 2. Fruit oval, compressed, blue. 



3 N Capitata. a small tree. Leaves on short petioles, oblong-lanceo- 

 late and oval, pubescent and hoary beneath. Sterile florets numerous, in 

 compact heads ; fertile florets solitary, on short peduncles. Perianth, tomen- 

 tose. Fruit ovate, of a dull red color, sour. 



\i April— May. Wet soils. 15-20 ft. 



4 N ToMENTOSA. A tree. Leaves on long petioles, oblong acuminate, to- 

 mentose beneath, coarsely and acutely toothed. Fertile florets solitary, pe- 

 dunculate ; segments of the perianth cuneate. 



T^ April — May. Southern Ga. 



5 N Uniflora. a large tree. Leaves on long petioles, large, ovate, ob- 

 long, acuminate, irregularly and acutely toothed, pubescent beneath ; the old 

 leaves cordate. Fertile flowers solitary, axillary. Fruit oval, or ovate, dark 

 blue, large. 



h April — May. Deep swamps. 60-80 ft. 



Genus II, HAMILTONIA. 



Polyg-'.mous. Perfect flowers. Periaw^A turbinate, campan- 

 ulate, S-cleft. Germ immersed in a 5-toothed, glandular disk. 

 Stamens 5. Style 1. Stigmas 2-3. Drupe inferior, 1 -seed- 

 ed, inclosed in the base of the perianth. 



1 H Olefiera. a shrub Zeares oblong, obovate, entire, acuminate, pu- 

 bescent beneath, petiolate. Flowert in a terminal raceme, small, greenish 

 yellow. Nut globular, depressed, 1-celled. The whole plant more or less 

 oily. Oil nut. 



T2 May — June. Mountains. 4-6 ft. 



Genus III. THESIUM. 



Flotoers perfect. Perianth 4 or 5-cleft. Stamens 4 or 5, 

 opposite the lobes of the perianth, villous externally. Nut 1- 

 seeded, crowned by the persistent perianth. 



1 T Umbellatum. Stem erect, glabrous, branching near the summit. 

 Leaves oblong, lanceolate, entire, alternate, mucronate. Flowers in terminal 

 panicles, sub-corymbed. Involucre 4-leaved, small. Perianth 5-cleft, with 

 the upper half colored. 



% July— Aug. Rocky hills. 8-12 in. 



Order CXXXII. ARISTOLOCHI^. 



Flowers perfect. Perianth superior, tubular, S-cleft, regu- 

 lar, or sometimes very unequal, aestivation valvate. Stamens 

 6-12, epigynous. Ovary inferior, 3-6-celled. Ovules nu- 

 merous. Styles simple. Stigmas radiating, equal in number 

 to the cells of the ovary. Fruit capsular, 6-celled, many 

 seeded. Herbaceous or shrubby plants, the latter usually 



