140 
Spring Flora of Oklahoma 
Canescent; leaves with 2-4 basal lobes. 4. C. incanus. 
1. Convolvulus repens L. Trailing Bindwood. Stem trailing 
or twining. Leaves ovate or oblong, sagittate or cordate at the base, 
entire l'-2' long. Peduncles l-flowered. Flowers white, about 2' 
long. Calyx bracted. 
In moist and dry soil. May-August. Common. 
2. Convolvulus spithamaeus L. Upright Bindweed. Stem 
erect or ascending. Leaves oval, subcordate at the base, l'-2' long. 
Penducles 1-flowered. Flowers white, nearly 2' long. Calyx bracted. 
In dry, sandy, or rocky fields or on banks. May-August. Fre¬ 
quent. 
3. Convolvulus arvensis L. Small Bindweed. Stems trailing 
or decumbent. Leaves ovate or oblong, entire, sagittate or some¬ 
what hastate at the base, l'-2' long. Peduncles 1-4 flowered, 1-2 
bracted at the summit. Corolla pink or nearly white, 8"-12" broad. 
Calyx not bracted. 
In fields and waste places. May-September. Frequent. 
4. Convolvulus incanus Vahl. Hoary Bindweed. Finely and 
densely canescent. Stems procumbent or trailing. Leaves lanceo¬ 
late, ovate to linear in outline, usually with 2-4 divergent lobes at 
the base, otherwise entire, or irregularly dentate, l'-2' long. Pedun¬ 
cles 1-2 flowered, minutely bracted at the summit. 
In dry, rocky soil. April-August. Comanche County. 
FAMILY 73. POLEMONIACEiE. Phlox Family. 
Annual or perennial herbs, rarely shrubs. Leaves al¬ 
ternate or the lower opposite, without stipules. Flowers 
in terminal, forking cymes. Calyx hypogynous, 5-lobed. 
Corolla regular or nearly so, 5-parted. Stamens 5, in¬ 
serted on the corolla tube, usually unequal. Ovary 3- 
celled. Style simple. Stigmas 3, linear. Capsule 3-celled, 
the cells 1-many-seeded. 
Corolla salver-form; leaves opposite, entire. I. Phlox. 
Corolla funnel-form, tubular, salver-form, or campanu- 
late; leaves alternate or opposite. II. Gilia. 
I. PHLOX. L. 
Perennial, or, rarely, annual, erect or diffuse herbs, 
