EVENING PKIMROSE FAMILY. 179 



7. CUPHEA. (Name from Greek, means gibbous or curved, from the 

 shape of the calyx.) Leaves chiefly opposite ; flowers all summer. 

 * Annuals. 



C. viscosissima, Jacq. CLAMMY C. Sandy fields from Conn, to 111. 

 and S. ; a rather homely herb, l-2 high, branching, clammy-hairy, with 

 lance-ovate leaves ; small flowers somewhat racemed along the branches 

 and ovate pink petals on short claws. 



C. lanceolata, DRYAND (or C. SILENO^DES). Cult, from Mexico ; clammy- 

 hairy, 1 high, with lance-oblong or lanceolate leaves tapering at base 

 into short petiole, and rather large flowers, some racemed on the branches ; 

 calyx purplish, almost 1' long, ovoid at base and with a tapering neck ; 

 petals blood-purple or crimson, rounded, the 2 larger ' in diameter. 



* * Perennials, more or less woody at base. 



C. hyssopifdlia, HBK. A diffuse plant usually grown in pots, with 

 small and linear-oblong spreading leaves, and solitary, little, pinkish 

 flowers which, including the slender pedicels, are scarcely longer than the 

 leaves. Mex. 



C. Ignea, DC. (or C. PLATYCENTRA). Cult, from Mexico, both in 

 greenhouses and for borders, flowering through the season ; slightly 

 woody at base, 8' -12' high, forming masses, thickly beset with the ovate 

 or lance-ovate acute, smooth, and glossy bright green leaves, with bright 

 vermilion flowers between each pair, the calyx narrow and tubular, 

 almost 1' long, with a short and very blunt spur at base, the short border 

 and teeth dark violet edged on the upper side with white ; petals none. 



XLVII. ONAGRACEJ!, EVENING PRIMROSE FAMILY. 



Herbs, or sometimes shrubs, generally without stipules ; the 

 parts of the perfect and symmetrical flowers in fours (rarely 

 in two to sixes) throughout; the tube of the calyx usually 

 prolonged more or less beyond the adherent ovary, its lobes 

 valvate in the bud, its throat bearing the petals (convolute in 

 the bud), and as many or twice as many stamens ; styles always 

 united into one. Embryo filling the seed ; no albumen. Com- 

 prises many plants with showy blossoms. (Lopezia has irregu- 

 lar flowers with only one perfect stamen.) 



* Capsule dry and dehiscent, 2-6-celled, and the cells oo -seeded. 

 +- Seeds comose : i.e. furnished with a tuft of long and soft hairs at one end. 



1. EPILOBIUM. Calyx with tube scarcely at all extended beyond the linear ovary. 



Petals 4. Stamens 8. 



2. ZAUSCHNEEIA. Calyx extended much beyond the linear ovary into a ftinnel-shaped 



tube, with an 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. 



-i- -i- Seeds naked, i.e. without a downy tuft. 



H- Flowers regular and symmetrical, but often without petals ; the calyx tube not 

 extended beyond the broad summit of the ovary, on which the green lobes mostly 

 persist ; style usually short ; stigma capitate. 



8. JUSSI^EA. Stamens twice as many as the lobes of the calyx, petals, and cells of the 

 pod ; i.e. 8 or 10, rarely 12. 



