.574 ORDER 93. CONTOLVULACE^E. 



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

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

 rarely 3, stigmas capitate; stamens included. ZC Slender, creeping, 

 doft-pubescent. 



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

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

 bracts 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 3. Pickeringii Gray. Lvs. narrowly linear; Irracts resembling the leave?, 

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

 in No. 1. If. Pine barrens, N. J. and N. Car. (Convolvulus Pickeringii Torr.) 



9. DICHON'DRA, Forst. (Gr. dig, double, ^ovopo^, grain; for its 2 

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

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

 with roundish-cordate or reniform Ivs. and inconspicuous fls. 



D. ripens 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 ; 

 stamens 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. d) Herbs without verdure, germinating in 

 the soil, at length withering 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 circumscissilo ............... So. 1 



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



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



1 Flowers in subglobons cymes! Corolla withering at base of capsule ...... Nos. 2 4 



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, indexed at the apex .................................. Nos. 6, 7 



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, denso, remote 

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

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

 scales small, crenate-dentate ; 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. GLANDULOSA Engelm. Sts. low, bright orange 

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

 glands ; sep. rounded-obtuse, as well as the soon-rcflexed cor. lobes ; sty. thick, 

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

 olla, leaving it at its base; scales large, often exceeding the tube, deeply fringed. 

 Ga. (Pond), Fla. to La, Parasitic, mostly on Polygonum. Fls. 1 to l" long. 

 Caps. H to 1" diam. 



* Abridged from Dr. Engelmann's Monograph. S<<e Prc&ec. 



