242 
3. Flowers outside receptacles... SN : 
Flowers inside receptacles... .. 13, Ficus. 
4. Leaves strongly 3-nerved —— ... aud 5. 
eaves penuinerv € we -— 6. 
5. Female flowers in spikes is el dl. Morus. 
Female flowers in globular he ads 10. Broussonetia. 
6. zie = in large pear-shaped 
15, Artocarpus. 
Reniale Hewes; in n globular heads T: 
7. Leaves subserrate, suddenly acuminate; 
styles 6 times longer than perianth 9. Malaisia. 
Leaves entire, blunt ; styles short ... 14. Cudrania. 
8. Lre. ves ese we 9. i 
Shrub .. 12 
9. Leaves 3-nerved 11 
Leaves penninerved 10 
10. Leaves crenate : 1. Ulmus. 
Leaves ent as 4, Gironniera. 
ll. Leaves smooth and glabrous «d 2. Celtis. 
Leaves rough or velvet de e. 0703. T'rema. 
12. Plant — ng . = iia .. 5, Humulus. 
Stem erect on iss AS 
13. Leaves 5-1l-partite 6. Cannabis. 
Leaves entir 14 
14. Flowers ae, female calyx ‘tubular 23. Bochmeria. 
Flowers fascicled o cym 15. 
15. Leaves opp k 16. 
Leaves alternate ARE ia un 22. 
16. Leaves symmetrical  ... sis ove 17. 
Leaves oblique at the base... ... 18. 
17. Hairs ares < ei rad SN wo 10. Uriwa: 
No stinging ha ke 018. Pilea 
18. Flowers on a discoid receptacle. "a 1S Lecanthus. 
ean fascicled 24. Pouzolzia. 
19. Female calyx tubular, enclosing achene 20. 
Female calyx 3-4-partite ; achene free 2]. 
5. Villebrunea. 
Stigma filiform ; perianth free .. 24. Pouzolzia 
i li 
8 
Cymes solitary, axillary, stalked Fatoua 
22, Leaves symmetrical ese Pe 19 
Leaves oblique at the base .. 23: 
23. Flowers some or on à fleshy 
re raga acle ... : 24. 
Flowers cymose .. 20. Pellionia. 
24. All were on à fleshy re recepta acle ^... 21. Elatostema. 
Male flowers only on a fleshy receptacle 22. Procris. 
1.—ULMUS. 
1. U. parvifolia, Jacquin ; Planch. in DC. de xvii. 161. Ina 
garden at Canton, Fl. green, August ? 
