230 SYSTEMATIC BOTANY. 



I. Epilobium. Calyx-tube not prolonged beyond the ovary. 

 Limb 4-cleft. with spreading and deciduous segments. Petals 4. 

 Stamens 8. Anthers attached near the middle. Capsule linear, 4- 

 sided, 4-celled, 4-valved. if. 



1. E. ANGUSTIFOLIUM (Willow Herb}. Stem erect, simple ; leaves lan- 

 ceolate, sessile ; flowers numerous, large, of a purplish lilac color, in a long, 

 terminal, spicate raceme ; stamens and styles declined. A showy plant in 

 low grounds ; 2-6 feat high. July-August. 



2. E. COLORATUM (Colored Willow Herb}. Stem erect, nearly terete, very 

 branching ; leaves mostly opposite, lanceolate, acute, very shortly petiolate ; 

 flowers numerous, rose-colored, small ; petals cleft at apex, twice as long as 

 the sepals ; stigma clavate. In wet, swampy grounds ; 1-3 feet high. 



2. QEnothera. Calyx-tube prolonged beyond the ovary, the seg- 

 ments 4, reflexed. Petals 4, equal. Stamens 8. Capsule 4-celled, 4- 

 valved, many-seeded. Stigma 4-lobed. y 



1. CE. BIENNIS (Evening Primrose}. Stem erect, simple or branched; 

 leaves ovate-lanceolate, pubescent ; flowers large, yellow, in a terminal leafy 

 spike, sessile. In fields. Plant 3-5 feet high. June- August. 



2. CE. PUMILA (Dwarf Primrose}. Stem slender, simple, reclined at 

 base, ascending ; leaves lanceolate, entire, obtuse, tapering at base, sessile ; 

 flowers rather small, yellow, in a terminal, leafy spike ; petals obcordate ; 

 capsule oblong-clavate. In grassy fields, 8'-i2' high. June-August. 



3. Fuchsia. Calyx tubular, funnel-form, colored, deciduous, with 

 a 4-lobed limb. Petals 4. Disk glandular, 8-furrowed, Capsule bac- 

 cate, oblong, obtuse, 4-sided. 



F. COCCINEA (Lady's Eardrop}. Stem shrubby, with smooth branches ; 

 ovate, acute, on short petioles ; flowers axillary, nodding ; sepals oblong, 

 acute ; petals convolute, half as long as the calyx. In cultivation, growing 

 1-6 feet high. 



4. Ludwigia. Calyx-tube not prolonged beyond the ovary. Pet- 

 als 4, equal. Stamens 4, opposite the calyx-segments. Capsules short, 

 4-celled, 4-valved. y. 



1. L. ALTERNIFOLIA (Seedbox}. Stem erect, branching, slightly angled ; 

 nearly smooth ; leaves lanceolate, or oblong-lanceolate, sessile ; flowers yel- 

 low, on axillary, solitary peduncles ; calyx-segments broadly ovate ; capsule 

 4-winged, crowned with the calyx. In swamps, i8'-25' high. July-August. 



2. L. PALUSTRIS (Water Purslane). Smooth and somewhat succulent ; 

 stems procumbent ; leaves opposite, ovate, entire, petiolate, acute ; flowers 

 sessile, axillary ; capsule oblong, 4-angled, short. Creeping plant in muddy 

 place's. June-September. 



5. Circaea. Calyx-tube slightly produced beyond the ovary, de- 

 ciduous. Petals 2, obcordate. Stamens 2, alternate with the petals. 

 Capsule obovate, hispid, 2-celled, at length 2-valved, 2-seeded. 11 



