142 EVENING-PRIMROSE FAMILY. 



2. Parts of the jlmcer in fours, or Jives in No. 8. 

 * Ovary and dry nut-like fruit with a single ovule or seed in each cell. 



2. GAURA. Herbs with alternate sessile leaves, and small or smallish flowers in 



racemes or spikes Calyx with slender tube much prolonged beyond the 

 4-celled ovarv. Petals 4", on claws, mostly turned toward the upper side of 



tin- flower. 'St:i us s, these and the long style turned town. A little scale 



liriore each filament. Fruit small, 4-ang]cd or ribbed, 1 - 4-seeded. 

 * * Ocnrif uml fruit iritli i/inni/ nni/iit mid & eds in enc/i of the cells. 



t- Herbs: fruit a <//;/'.'/ !-< (/// and 4-vnlved dry j></. 



** ** Seeds furnished with a coma or tuft of km;/ nnd fft hnirg tit one end, by which 

 they nre widilt/ <//.i/" '''/ ''.'/ <!' wind. 



3. KPILOBIl'M. Calyx with tube scarcely at all extended beyond the linear 



ovary. Petals 4. Stamens 8. 



4. ZAUS'CHNERIA. Calyx extended much beyond the linear ovary into a fun- 



nel-shaped tube, with tin abruptly inflated base where it joins the ovary, and 

 with 4 lobes as long as the 4 oblong-obcordate petals, both of bright scarlet 

 color. Stamens 8 and, as well as the long style, projecting. 

 M- H-t- Seeds naked, i. e. irillnnil a </><//// tuft. 



= Flowers regular and symmetrical: calyx-tube extended more or less beyond the 

 ovary, the lobes mostly rtjtextd: petals 4. 



6. CLAKKIA. Calyx-tube continued beyond the ovary into a short funnel-form 

 cup. Petals broad, wedge-shaped or rhombic, sometimes 3-lobed, raised on 

 a slender claw. Stamens 8, with slender filaments, the alternate ones short- 

 er: anthers curved or coiled after opening, those of the short stamens much 

 smaller, or deformed and sterile. Stigmas 4, oval or oblong. Pod linear 

 and tapering upwards, 4-sided. Flowers never yellow. 



6. EUCHAH1DIU.M. Calyx-tube much prolonged and slender beyond the ovary. 



Petals wedge-shaped and 3-lobed at summit, tapering into a short claw. 

 Stamens only 4, on slender filaments. Stigmas 2 or 4. Pod oblong-linear. 

 Seeds slightly wing-margined. Flowers never yellow. 



7. (ENOTHERA. Calyx-tube either much or little prolonged beyond the ovary. 



Petals usually obovate or obcordate, with hardly any claw. Stamens 8. 

 Flowers yellow, purple or white. 



= = Flowers regular and symmetrical, but often without petals: the calyx-tube not 

 in tlie least extended beyond the broad summit of flic ovary, on which llie 

 green lobes mostly persist : style, usually short : stigma capitate. 



8. JUSSIyEA. Stamens twice as many as the lobes of the calyx, petals, and cells 



of the pod: i. e. 8 or 10, rarely 12. 



9. LUDWIGIA. Stamens as many as the lobes of the calyx and cells of the pod, 



almost always 4. Petals 4, often small, or none. 



==== = Flowers irregular and untymmetrical : calyx-tube not exlendi d. 



10. LOPF./IA. Flowers small. Calyx with 4 linear purplish lobes. Petals with 



claws, 4, turned towards the upper side of the flower, the two uppermost nar- 

 rower and with a callous gland on the summit of the claw, and what seefns 

 to be a fifth small one (but is a sterile stamen transformed into a petal) stands 

 before the lower lobe of the calyx. Fertile stamen only one with an oblong 

 anther. Style slender: stigma entire. Pod globular. 



- Shrubs : fruit a 4-celled berry. 



11. FUCHSIA. Flowers showy; the tube of the highly colored calyx extended 



much beyond the ovarv, bell-shaped, funnel-shaped, or tubular, the 4 lobes 

 spreading. Petals 4. Stamens 8. Style long and thread-shaped: stigma 

 club-shaped or capitate. 



1. CIRCJEA, ENCHANTER'S NIGHTSHADE. (Named from Circe, 

 the enchantress, it is not obvious why ; the plants arc iiisignilicant and 

 inert, natives of damp \\ouds, flowering in summer.) 21 



C. Lutetiana, the common species, i- l-2 high, branching, with ovate 

 and slightly toothed leaves, no bracts under tin- pedicels, the rounded little 

 fruit L'-cellcd and bc~et \vith bristly hairs. 



C. alpina, common only N. or in mountainous regions, smooth and tM\- 

 CatC, 3' - 6' high, with thin and heart-shaped coarsely toothed leaves, minute 

 bracts, and obovate or club-shaped fruit l-eel!ed and soft-hairy. 



