cent, longer than the flowers, 1 to 2 times as long as the fruit; appendages of calyx 

 2 to 5 times as long as the sepals, sometimes becoming reflexed; sepals long- 

 triangular, sometimes cuspidate; petals small, pink to white, elliptic, 1 mm. long; 

 style short or obsolete; ovary 4-celled (sometimes 3-celled). 



In shallow water or at the margins of ponds or streams, probably in s. Ariz.; 

 also n. Son. 



7. Cuphea P. Br. 



Herbs or woody plants, mostly clammy-pubescent; leaves entire; flowers solitary 

 in axils or in terminal spikes or racemes; calyx tubular, 12-ribbed, gibbous or 

 spurred at base on upper side, the 6 lobes with small teeth in the sinuses; petals 6, 

 unequal; ovary with a curved gland at the base next to the calyx spur, 1- or 

 2-celled; style slender, the stigma 2-lobed; stamens 6 to 14, adnate to near the top 

 of the hypanthium; embryo with orbicular cotyledons; capsule ovoid or ellipsoid, 

 few-seeded, soon ruptured on one side. 



About 250 species, primarily in the American tropics. 



1. Perennial; stems thin and wiry, spreading-assurgent; stem leaves sessile or 

 essentially so, about 1.5 cm. long 1. C. glutinosa. 



1. Annuals; stems stoutish and erect; stem leaves distinctly petiolate, usually 



2 cm. long or more (2) 



2(1). Mature calyx 5-7 mm. long, the limb subequally 5-lobed 



2. C. carthagensis. 



2. Mature calyx 8-12 mm. long, the limb noticeably bilabiate 



3. C. viscosissima. 



1. Cuphea glutinosa Cham. & Schlecht. 



Perennial with slender rootstocks, the roots fibrous, the herbage more or less 

 glandular-viscid throughout; stems thin and wiry, spreading-assurgent, 1-3 dm. 

 long, simple or usually sparingly branched; leaves sessile or nearly so, ovate to 

 oblong-lanceolate, acute, about 1.5 cm. long or less; pedicel about 1.5 mm. long; 

 hypanthium 7-8 mm. long, curved, gibbous; calyx limb with 5 minute equal deltoid 

 lobes; petals deep violet-color, elliptic-oblong, obtuse, 5-6.5 mm. long; seeds dis- 

 coid, about 2 mm. long. 



Wet meadow about small woodland lake in s.e. Tex. (Tyler Co.), Sept.-Nov.; 

 also La.; nat. of S.A. 



2. Cuphea carthagensis (Jacq.) Macbr. Fig. 546. 



Plant annual, 2-9 dm. high, the stem and branches with scattered bristly hairs; 

 leaves short-petiolate, elliptic to oval or sometimes obovate, 2-6 cm. long, rugose 

 (especially with age); hypanthium and calyx 5-7 mm. long, usually with few 

 bristles; calyx lobes minute, broadly deltoid; petals pink or bluish, elliptic or nearly 

 so, 1.5-2 mm. long; capsule 4-5 mm. long. 



On edge of low wet woods and swamps, rare in s.e. Tex. (Hardin Co.), July- 

 Sept.; from S.A., n. through C.A. and Mex. to Tex. and N.C. 



3. Cuphea viscosissima Jacq. Blue vvaxweed. Fig. 546. 



Plant annual, viscid-hairy, 1-7 dm. high; leaves with petioles to about 15 mm. 

 long; blade lanceolate to ovate-lanceolate, 1-3.5 cm. long; hypanthium and calyx 

 8-12 mm. long; calyx limb prominently bilabiate, the upper lip much broader than 

 long; petals ovate, short-clawed, rose-purple, the upper ones 4.5-5.5 mm. long; 

 capsule 6-8 mm. long; seeds flat. C. petiolata (L.) Koehne. 



Fields, roadsides, wet gravel bars of rivers, edge of streams and lakes, one Tex. 

 record without definite locality and in e. third of Okla. (Cherokee and McCurtain 

 COS.), July-Oct.; from Ga. to La., Tex. and Okla., n. to Kan., la. and N.E. 



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