310 Convolvulaceae 
CONVOLVULUS BIND-WEED 
Herbs not parasitis, green. Leaves alternate, wide, simple. Flowers mostly soli- 
tary in the leaf-axils. Sepals nearly equal or | larger, with or without a pair of bracts 
at base. Corolla campanulate to funnelform, somewhat 5-lobed or -angled at margin, 
deeply plaited down the sinuses in the bud. Stamens included. Capsule globose, 2-celled, 
2-ovuled. Seeds usually 2. (L. convolvere—to entwine; they are twining plants. ) 
A.  Peduncles with 2 bracts just beneath the calyx and reaching or enclosing it; stig- 
mas linear to ovate. 
B. Leaves somewhat cuneate at base; basal leaf-lobes small or none. W. (C. 
nyctagineus. ) C. californicus Choisy 
Leaves not at all cuneate at base. 
C. Leaves reniform, entire or with obscure angles, fleshy; stem trailing or creeping. 
W. C. soldanella L. (Fleshy Bind-weed) 
CC. Leaves not reniform, distinctly angled, not fleshy; stem mostly twining. 
D. Stigma oblong to linear; leaf-lobes at base entire; peduncles often 2-flow- 
ered. W. (C. polymorphus.) 
C. occidentalis Gray 
DD. Stigma ovate to oblong; leaf-lobes at base entire to 2—3-lobed; pedun- 
cles all I-flowered. E. (C. sepium americanus. ) 
C. sepium L. (Hedge Bind-weed) 
AA. Peduncles without bracts near the calyx, but often with them further down; 
stigmas filiform. W. E. C. arvensis L. (Field Bind-weed) 
CUSCUTA DODDER 
Herbs, parasitic, without green color, twining. Leaves mere scales, alternate. 
Flowers small, whitish, in cymose clusters. Calyx 4—5-parted or -cleft. Corolla cam- 
panulate or short-tubular or urceolate, mostly with lacerate scales inside at the throat. 
Stamens in throat of corolla 1 above each scale (when present). Ovary globose, 2- 
celled, 4-ovuled;: styles distinct or rarely united. Seeds |—4. (Latin name; from 
kechout, the Arabic name.) 
A. Corolla-scales fringed; stigmas capitate. 
B. Capsule pointed. 
C. Flowers with pedicels; dry corolla enveloping the capsule; in fields and waste 
places. E. C. indecora Choisy (Pretty Dodder) 
CC. Flowers subsessile; dry corolla not enveloping the capsule, in salt marshes 
along the coast. W. (C. salina.) 
C, squamigera Pip. (Salt-marsh Dodder) 
BB. Capsule globose. 
D. Flowers sessile; style shorter than the ovary. E. 
C. arvensis Bey. (Field Dodder) 
DD. Flowers with pedicels; style as long or longer than the ovary. 
E. Stems coarse; calyx-lobes obtuse; corolla-lobes obtuse or rounded. E. 
C. cephalanthi Engelm. (Sage Dodder) 
EF. Stems fine; calyx-lobes acute; corolla-lobes lanceolate-subulate. C. E. 
C. californica Choisy 
AA. Corolla-scales crenulate; stigmas filiform. 
F. Calyx-lobes not keeled: corolla-lobes triangular, acute. W. 
C. epithymum Murr. (Alfalfa Dodder) 
FF. Calyx-lobes keeled; corolla-lobes ovate, obtuse. E. 
C. planiflora Ten. 
