134 EPILOBIACEAE. 



Leaves opposite: creeping or floating plants. 1. ISXABDIA. 



Leave* alternate : erect or ascending plants. 2. LCDWIGIA. 



Stamens 8, In 2 rows. 3. JCSSIAEA. 



Hypanthium prolonged beyond the ovary. 4. RAIMANMA. 



Fruit nut-like, indeblscent 5. GAURA. 



1. ISNARDIA L. Perennial succulent herbs. Leaf -blades relatively wide. 

 Flowers axillary. Sepals 4, broad. Petals minute, reddish to greenish, or 

 wanting. Filaments very short. Ovary short. Style wanting or nearly so. 

 Capsule obovoid or turbinate. 



1. I. repens (Sw.) DC. Leaf-blades ovate, elliptic, or oval, 1-3 cm. long: 

 hypanthium obpyramidal: sepals ovate-lanceolate: petals as long as the sepals 

 or wanting: capsules obpyramidal. [7. natans (Ell.) Small.] Lime-sinks in 

 hammocks. (Ber., Bah., Cuba, Ant.) MARSH-PURSLANE. 



2. LUDWIGIA L. Annual or perennial herbs. Leaf-blades entire or 

 rarely shallowly toothed. Flowers axillary or terminal. Sepals generally per- 

 sistent. Petals usually 4. Ovary usually 4-celled. Capsule cylindric or j-n- 

 mati<- to subglobose. 



Corolla Inconspicuous, obsolete or wanting: capsule opening by valves separating 



from the disk-like top. 

 Upper stem-leaves with spatulate blades : capsule less than 3 mm. high : anthers 



nearly 0.5 mm. long or less. 



Leaf-blades entire: mature sepals orbicular o\ n. i. L. microcarpa. 



Leaf-blades toothed at the apex : mature sepals lanceolate 



or triangular-lanceolate. 

 Leaf-blades broadly spatulate : sepals much shorter than 



tli- hypanthium. 2. L. Slmptonil. 



Leaf -blades narrowly spatulate : sepals about as long 



as the liy punt Mum. 3. L. Curtitsii. 



Upper stem leaves with linear-lanceolate or linear blades : 



anthers nearly 1 mm. long. 4. L. lanceolofa. 



Corolla conspicuous : flowers pedlcelled : capsule opening by a 



terminal pore. 5. L. maritima. 



1. L. microcarpa Michx. Plants low or depressed: leaf -blades spatulate or 

 obovate-spatulate, 0.5-3 cm. long: sepals triangular: petals wanting: capsulcx 

 broadly obpyramidal, 1.5-2 mm. long. Hammocks and everglades. F. K 

 (Bah., Ant.) 



2. L. Bimpsonii Chapm. Plants weak, often decumbent: leaf -blades 1-2.5 cm. 

 long: sepals triangular: petals wanting: capsules broadly turbinate, about 2 

 mm. long. Hammocks. 



3. L. Curtissli Chapm. Plants erect or ascending: leaf -blades 1-2 cm. long: 

 sepals lanceolate or triangular-lanceolate: petals wanting: capsules turbinate, 

 2-2.5 mm. long. Everglades. 



4. L. lanceolata Ell. Plants 3-9 dm. tall, the stem angled or sometimes 

 winged: leaf-blades linear-oblanceolate to linear-lanceolate or linear, 2-10 cm. 

 long: sepals very broad, acute: petals wanting: capsules 4-5 mm. long, the 

 angles margined. Everglades. 



6. L. maritima Harper. Plants fastigiately branched, glabrous or nearly so: 

 leaf -blades linear to lanceolate: sepals 3-4 times as long as the hypanthium. 

 permanently reflexed : capsules very slightly winged on the angles. Pinelands. 



3. JU8SIAEA L. Perennial herbs or partially woody plants. Leaf -blades 

 usually entire. Flowers axillary. Sepals 4-6, persistent. Petals 4-6, white or 

 yellow, or rarely none. Stamens 8-12. Ovary 4-6-celled. Capsule linear, 

 oblong or clavate. 



1. J. pennriana L. Stems 1-4 m. tall, hirsute: leaf -blades ovate, oval, lanceo- 

 late, or oblong-lanceolate, 4-10 cm. long, or more: hypanthium hirsute: sepals 



