CONVOLVULACEAE 
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Follicles ovate or lanceolate. (Greek name of the European swallow- 
wort, a plant of this family.) 
Horns present on the hoods of the stamens. 
Hoods equalling or shorter than the anther-column. 
Leaves broad; filament-column very short or almost none ; herbage hoary- 
tomentose.,...1. A. eriocarpa. 
Leaves narrow; filament-column about as long as the anther-column; 
herbage glabrous.2. A. mexicana. 
Hoods twice or thrice as long as the anther-column; filament-column very 
short or none.3. A. speciosa. 
No horns to the hoods of the stamens; herbage glabrous.4. A. cordifolia. 
1. A. eriocarpa Benth. Stem 4.3 to 8.6 elm. high; leaves broadly 
oblong, 9.6 to 21.6 cm. long, short-petioled; umbels clustered toward the 
summit; flowers 7 mm. long; corolla creamy-white; hoods pinkish.— 
Dry barren vallej^s of the Coast Range and Sierra Nevada foothills. 
From the bast fibres Indians made rope, bow-strings and squaw head- 
bands for carrying burdens. White women settlers use the silky coma of 
the seeds as floss for scent-bags, finding it superior to cotton. The 
herbage is said to poison sheep. 
2. A. mexicana Cav. Narrow-leaf Milkweed. Stem slender, 5.8 
to 14 dm. high; leaves 6 to 14.4 cm. long; umbels many, many-flowered; 
flowers greenish-white or tinged with purple.—Dry ground, valleys. 
Sometimes it becomes a weed in cult, fields or orchards. 
3. A. speciosa Torr. Creek Milkweed. Stem stout, 5.8 to 13 dm. 
high, leafy to the top; herbage soft-tomentose; leaves opposite, trans¬ 
versely veined, 9.6 to 14.4 cm. long; petals pink or reddish-purple; hoods 
yellowish.—Valley flats and along streams. 
4. A. cordifolia (Benth.) Jepson. Purple Milkweed. Stems 4.3 to 
5.8 dm. high; leaves mostly opposite, ovate-lanceolate, cordate-clasping, 
4.8 to 9.6 cm. long; corolla dark purple; hoods purplish.—Open slopes. 
CONVOLVULACEAE. MORNING GLORY FAMILY 
Chiefly twining or trailing herbs, rarely with woody stems. Leaves 
alternate. Flowers regular, the parts in 5s, except the superior ovary 
which is commonly 2-celled. Sepals distinct, imbricated. Corolla showy, 
funnelform or campanulate, plicate and twisted in the bud. Styles 1 or 
2. Fruit a capsule.—Species about 1100, all regions except the arctic 
zones. 
Stigmas filiform or ovate.1. Convolvulus. 
Stigmas capitate.-...2. Ipomaea. 
1. CONVOLVULUS L. Bindweed 
S tems twining, or trailing over the ground. Style 1, stigmas 2. Cap¬ 
sule globose, 4-seeded. (Latin convolo, to entwine.) 
Calyx not inclosed by bracts; corolla purplish outside. 
Stems herbaceous, prostrate ; bracts distant twice or at least more than their 
length below calyx; corolla white.1. C. arvensis. 
Large woody climbers ; bracts inserted less than their length below the calyx ; 
corolla purplish-white.-.2. C. luteolus. 
Calyx embraced by a pair of broad bracts ; corolla white or cream-color. 
’ Herbage glabrous or nearly so ; peduncles 4.8 to 9.6 cm. long, greatly sur¬ 
passing the leaves.3. C. occidentalis. 
