838 EPILOBIACEAE 



is shocked : capsules cubic above a rounded base, slightly wing-angled, 5-7 mm. high, 

 each opening by a pore. 



In swamps, New Hampshire to Ontario, Michigan, Florida, Kansas and Texas. Spring to fall. 



4. JUSSIAEA L. 



Perennial herbs or shrubby plants, with erect or creeping stems. Leaves alternate : 

 blades usually entire. Flowers perfect, axillary. Sepals 4-6, acute, persistent. Petals 

 4-6 (rarely more), white or yellow. Stamens 8-12, in 2 rows. Ovary 4-6-celled. Cap- 

 sule linear, oblong or club-shaped, the body often narrowed into a pedicel-liiie base, 

 angular or ribbed, septicidal or opening by the breaking down of the capsule-walls. The 

 plants flower from spring to fall. 



Capsule-body narrowly cylindric, 2.5-5 cm. long. 

 Sepals 5 or 6. 



Petals much surpassing the sepals : stems decumbent : sepals 5. 



Corolla 2-2.5 cm. broad : leaf-blades long-petioled. 1. J. diffusa. 



Corolla 4-5 cm. broad : leaf-blades short-petioled. 2. J. grandiflora. 



Petals about as long as the sepals : stems erect or ascending : sepals mostly 6. 3. J. leptocarpa. 

 Sepals 4. 



Branches and leaves glabrous or nearly so, if pubescent the hairs appressed. 4. J. suffruticosa. 

 Branches and leaves hirsute. 5. J. scabra. 



Capsule-body oblong or oblong-obovate, 1.5-2 cm. long. 



Leaf-blades sessile, decurrent as wings on the angles of the stem : fruit winged. 6. /. decurrens. 

 Leaf-blades short-petioled : fruit not winged. 



Corolla about 1 cm. broad : fruit 2-3 mm. thick. 7. J. erecta. 



Corolla 4-5 cm. broad : fruit 7-9 mm. thick. 8. J. Peruviana. 



1. Jussiaea diffusa Forskl. Stem creeping or floating, glabrous, 3-9 dm. long : 

 leaf-blades oval, oblong, spatulate or obovate, 2.5-iO cm. long, obtuse or acute at the apex, 

 slender-petioled : peduncles slender: sepals 5, lanceolate: corolla yellow, 2-2.5 cm. 

 broad : stamens 10: capsule-body 2.5-4 cm. long. 



In and about ponds, Kentucky to Kansas, Florida and Texas. Also in tropical America and Asia. 



2. Jussiaea grandiflora Michx. Stems villous or hirsute, 6-10 dm. long, decum- 

 bent, creeping or floating, the ends erect : leaf-blades various, spatulate on the lower part 

 of the stem, narrowly elliptic or lanceolate above, 3-12 cm. long, acute or acutish,_ grad- 

 ually narrowed into short petioles: sepals 5, about 12 mm. long, lanceolate, acuminate: 

 corolla 4-5 cm. broad, yellow : petals suborbicular, retuse, narrowed into short claws, 

 2-2.3 cm. long : fruit not seen. 



In ponds and streams. North Carolina to Florida and Louisiana. 



3. Jussiaea leptocdrpa Nutt. Stems mostly bristly hirsute, especially above, erect 

 or ascending, 6-20 dm. tall, much branched : leaf-blades objanceolate to lanceolate, 3-20 cm. 

 long, acute or acuminate, more or less hirsute, especially along the midrib beneath, narrowed 

 into short petioles or nearly sessile : hypanthium hirsute, elongated : sepals 6 or some- 

 times 5, lanceolate, acuminate : corolla yellow, about 1.5 cm. broad : petals about as long 

 as the sepals : fruit narrowly cylindric, 3.5-6 cm. long, the body 6-8 times longer than the 

 pedicel-like base. 



In swamps, Georgia to Arkansas, Florida and Texas. 



4. Jussiaea suffruticosa L. Stems glabrous, or sparingly appressed-pubescent above, 

 erect, 4-16 dm. tall, angled, more or less branched : leaf -blades narrowly oblong or lanceo- 

 late, 4-15 cm. long, acute or acutish, short-petioled : liypanthium sparingly pubescent, 

 elongated : sepals 4, ovate, acute or acuminate, 3-5-nerved : corolla yellow, 2-3 cm. broad : 

 petals broadly obovate, retuse, nearly twice as long as the sepals : capsule-body narrowly 

 cylindric, 4-5.5 cm. long, 4-sided, 8-nerved, narrowed into a short pedicel-like base. 



On moist banks. North Carolina and Arkansas to Florida and Texas. Also through the tropics to 

 Brazil and in the West Indies. 



5. Jussiaea scibra Willd. Stems often woody, hirsute throughout, much-branched, 

 6-14 dm. tall, the leafy branches spreading : leaf-blades various, ovate to obovate, 2-6 cm. 

 long, obtuse or acutish, densely pubescent on both surfaces, short-petioled : hypanthium 

 hirsute, elongated : sepals 4, ovate, acute or short acuminate, 3-nerved : corolla yellow, 

 2-2.5 cm. broad : petals 4, longer than the sepals : capsule-body narrowly cylindric, 2.5-3 

 cm. long, 3-4 times longer than the hirsute pedicel-like base. 



In moist soil, Florida and tropical America. 



6. Jussiaea decurrens (Walt.) DC. Stems angled, branching, 3-6 dm. tall: leaf- 

 blades lanceolate, acute or acuminate at the apex, decurrent on the stem, 2.5-10 cm. long : 

 sepals 4, ovate-lanceolate : corolla yellow, 8-12 mm. broad : stamens 8 : capsule-body 2-2.5 

 cm. long, 2-3 times longer than the pedicel-like base, 4-sided, the angles somewhat winged. 



In swamps, Maryland to Illinois, Arkansas, Florida and Texas. 



