DAPHNACEAE. 83 



obovoid, 2-3 em. long: seeds 4 mm. t^ide or less, thick-margined. \0. vul- 

 garis Mill.] 



Sandy woods, n. Fla. (Cont.) 



2. O. austrina Small. Stems woody at the base, the roots tuber-bearing, the 

 joints broadly obovate or orbicular-obovate, deep-green, 5-11 cm. long, or rarely 

 somewhat longer, the early deciduous leaves mostly less than 10 mm. long: 

 spines mainly above the middle of the joints and near the edge, usually 2 

 together but one of them very small or deciduous, whitish or pinkish, and 

 reddish near the base and apex, twisted: flowers bright-yellow, 6-7 cm. broad: 

 petals cuneate, truncate or retuse at the slightly eroded tip, and mucronate: 

 fruits 2.5-3 cm. long. 



Pinelands and coastal sand-dunes, s. pen. Fla. (Endemic.) 



3. O. Dillenii (Ker.) Haw. Stems erect, 9-12 dm. tall, proliferous, the joints 

 oval or elliptic, 10-20 cm. long: areolae remote above, with clusters of 

 4-6 short rigid or subulate yellow spines, varying from very short to 3.5 cm. 

 in length: flowers bright-yellow, showy, 7.5-10 cm. broad: fruits rather 

 pear-shaped, 5-6 cm. long, edible. [0. Tuna, Chapm. Not Mill.] 



Hammocks, s. pen. Fla. and the F. Keys. (W. I.) 



4. O. inennis DC. Stems erect, 12-18 dm. tall, proliferous: the joints thick, 

 obovate to elliptic, 10-15 cm. long, with the cushions of bristles immersed, 

 spineless or sometimes with a very short spine: flowers salmon or yellow, 

 7.5-10 cm. broad: fruits obovoid, bristly, 5-6 cm. long, edible, the pulp red. 

 [0. Ficus-Indica Chapm. Not Mill.] 



Hammocks, F. Keys. (Endemic.) 



5. O. Pes-Corvi LeConte. Stems prostrate or diffusely spreading, 3-7 dm. long, 

 the joints narrowly ovoid to obovoid, nearly terete, 2.5-7.5 cm. long, light green, 

 loosely attached to each other : bristle-cushions quite numerous, the upper ones 

 armed, the bristles pale: spines slender, solitary or 2-3 together, straight, 2.5- 

 3.5 cm. long, often flattened at the base and twisted: flowers yellow, 3.5-4 cm. 

 broad: fruits obovoid, 12-15 mm. long, rose-purple, bristly: seeds often 4-5 

 mm. long, with an obtuse margin. [ ?0. Drummondii Graham.] 



Sandy woods and ridges, mostly near the coast, n. Fla. (Cont.) 



Order THYMELEALES. 



Shrubs or trees, or partially herbaceous plants. Leaves opposite or 

 alternate, the blades simple, rarely mere scales, or obsolete. Flowers 

 perfect, polygamous, or dioecious, regular or nearly so. Calyx of 5 or 

 fewer sepals. Corolla wanting (in our species). Androecium of as many 

 stamens as there are sepals or of twice as many. Anthers opening by slits 

 or hinged valves. Gynoecium a single carpel. Ovary inferior. Ovules 

 mostly solitary. Fruit usually baccate or drupaceous. 



Anthers opening by silts : calyx obscurely lobed. Fam. 1. DAPHNACEAE. 



Anthers opening by valves : calyx deeply lobed. Fam. 2. LAURACEAE. 



FAMILY 1. DAPHNACEAE. MEZEREON FAMILY. 



Shrubs or trees, or rarely herbs, often pubescent. Leaves opposite 

 or alternate: blades entire. Calyx of 4 or 5 sepals, sometimes with 4 or 

 5 scales within. Androecium of as many stamens as there are sepals or 

 twice as many. Gynoecium seated in the bottom of the hypanthium. 

 Style usually eccentric. 



