574 Order 93.— CONVOLVULACE^E. 



8. STYLIS'MA, Raf. (The name has reference to the plurality of the 

 styles.) Sepals 5, equal; cor. campanulate ; ovary 2-ce lied ; styles 2, 

 rarely 3, stigmas capitate; stamens included. — 2J! Slender, creeping, 

 soft-pubescent. 



1 S. evolvuloides Chois. Lvs. oval or oblong or linear, entire, obtuse or rarely 

 retuse at both ends, on short petioles ; ped. longer than the leaves, 1 to 3-flowered ; 

 braefs subulate, shorter than the pedicels; sep. ovate, acuminate, thrice shorter than 

 the corolla; sty. distinct to near the base. — if Dry, sandy or rocky soils, S. E. Ohio 

 to Va., Ga. and La. St. trailing several feet, subsimple. Lvs. 1' to 18" long, 1 

 to 9" wide. Ped. 2 to 3'. Cor. 8 to 10" long, white. Jn. — Sept. (Convolvulus 

 aquaticus Walt. C. trichosanthus Mx., C. tenellus Lam.) 



2 S. Pickeringii Gray. Lvs. narrowly linear; bracts resembling the leaves, 

 equaling the flower ; sly. united to near the top ; stem pubescence and peduncles as 

 in Nc. 1. — If Pine barrens, N. J. and N. Car. (Convolvulus Pickeringii Torr.) 



9. DICHQN'DRA, Forst. (Gr. dig, double, % 6vS P°^ g rain 5 for itiJ 2 

 seed-vessels.) Calyx 5 parted ; corolla campanulate, 5-cleft ; ovaries 2, 

 styles 2, stigmas thick; capsules utricular, 1-seeded. — 21 Prostrate, 

 ■with roundish-cordate or reniform lvs. and inconspicuous fls. 



D. repens Forst. Lvs. much shorter than their petioles, pubescent or silky 

 beneath, entire ; ped. much shorter than the petioles, sep. oblong-spatulate, ob- 

 tuse, villous, a little larger than the oval cor. segm. — Wet grounds, S. States. A 

 little turfy creeper, rooting at every joint, 3 to 12' long. Lvs. varying from 3" 

 diam. to 9", petioles 1 to 3'. Cor. greenish white, 1 to 2" broad. Mar. — May. 



10. CUSCUTA, Tourn.* Dodder. (Fig. 456.) Calyx 5 (rarely 4)- 

 cleft or sepaled ; corolla globular-campanulate, 5 (rarely 4)-cleft ; 

 btamens 5 (rarely 4), appendaged with scales or fringes at base ; ovary 

 2-celled, 4-ovuled ; styles 2; capsules mostly 4-seeded ; embryo spirally 

 coiled, without cotyledons. — CD Herbs without verdure, germinating in 

 the soil, at length Avithering at the root, and deriving their nourish- 

 ment from other plants about which they twine from right to left. Stem 

 yellowish or reddish. Lvs. none, or minute scales instead. Fls. var- 

 iously aggregated. 



§ Stigmas filiform, as well as the styles. Capsules regularly circumscissile No. 1 



§ Stigmas capitate. Capsule indehiscent, or never bursting at base. (*) 



• Sepals united. Ovary and capsule globular-depressed. (1) 



1 Flowers in subglobous cymes. Corolla withering at base of capsule Nos. 2 — l 



1 Flowers in paniculate cymes. Corolla withering at top of capsule No. 5 



• Sepals united. Ovary and capsule more or less conical (2) 



2 Corolla lobes acute, innexed at the apes Nos. 6, T 



2 Corolla lobes obtuse, not inflexed Nos. 8, 9 



• Sepals distinct, surrounded by similar imbricated bracts Nos. 10, 11 



1 C. epilinum Weih. Flax Dodder. Fls. sessile, in small, dense, remote 

 heads; cal. 5-parted, segm. broad; cor. globous-cylindric, scarcely longer than 

 the calyx, with acutish lobes, withering around the depressed-globous capsulo ; 

 scales small, crenate-dentatc ; sty. short. — Middle States, growing on flax. Sts, 

 reddish orange. Fls. yellowish white. Cal. thickish. Stam. included. Stig. 

 acute. Caps, opening around the base. Jn. § Eur. (C. Europaea, Darl. and 

 others, not of L.) 

 2 C. obtusiflora (IT. B. K.) (3. glandttlosa Engelm. Sts. low, bright orango 

 colored ; fls. pedicellate, in loosely globular clusters, and dotted with red, shining 

 glands; sep. rounded-obtuse, as well as the soon-reflexed cor. lobes; stf. thick, 

 subulate, stig. capitate ; ova-large, depressed, soon outgrowing the withered cor- 

 olla, leaving it at its baso ; scales largo, often exceeding the tube, deeply fringed. 

 — Ga. (Pond), Fla. to La. ParasKic, mostly on Polyganum. Fls. 1 to 1^" long. 

 Caps, li to 1|" diam. 



* Abridgtd from Dr. Engclmann's Monograph. See Preface, 



