574 Order 93.— CONVOLVULACE^. 



8. STYLIS'HIA, 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. — 2[ Slender, creeping, 

 soft-pubescent. 



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

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

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

 the corolla ; sty. distinct to near the base. — 1( 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 

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



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

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

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



9. DICHOD'DRA, Forst. (Gr. dig, double, %6v(Jpof, grain; for its 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. 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. 



§ Btigmas filiform, as well as the styles. Capsules regularly circumscissile 'So. 1 



§ Btigmas capitate. Capsule indehiacent, 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 — 4 



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



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



2 Corolla lobes acute, innexed 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, dense, remote 

 heads ; caJ. 5-parted, segm. broad ; cor. globoua-cylindric, scarcely longer than 

 the calyx, with acutish lobes, withering around the depresaed-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 (H. B. El.) /3. qlandulosa 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-reflexed cor. lobes; sty. thiol^ 

 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 Polyganum. Fla. 1 to 1J-" long. 

 Caps. 1-J- to If" diam. 



• Abrldgad from Dr. Engelmaan's Monograph. See Preface. 



