9b. The erect hoods of each flower about 3 mm. long (6-10 dm. high) =Swamp Milkweed, Asclepias incarnata var. pulchra.= 10a. Leaves broadly rounded and almost sessile at base (flowers purplish) --11. 10b. Leaves narrowed at the base, distinctly petioled (8-15 dm. high) --12. 11a. Umbel solitary, terminal and erect on a long peduncle (4-8 dm. high) =Milkweed, Asclepias amplexicaulis.= 11b. Umbels terminal or lateral, bent toward one side (7-12 dm. high) =Milkweed, Asclepias sullivantii.= 12a. Corolla (not hoods) red (1-2 m. high) =Swamp Milkweed, Asclepias incarnata.= 12b. Corolla (not hoods) greenish (8-15 dm. high) =Milkweed, Asclepias exaltata.= CONVOLVULACEAE, the Morning Glory Family Twining or trailing herbs (except one species), with regular flowers; sepals 5; corolla 5-angled or 5-lobed; stamens 5, attached to the corolla; ovary superior, 2-3-celled. 1a. Plants with green foliage and conspicuous flowers (summer) --2. 1b. Leafless brown or yellow plants, with very small flowers (Dodder) --7. 2a. Style divided at the top into linear or oblong stigmas (flowers white or pink) (Bindweed) --3. 2b. Style not divided at the top; stigmas sessile, capitate (Morning Glory) --6. 3a. Stem erect; leaves rounded or somewhat cordate at base, not hastate or sagittate (1-3 dm. high) =Bindweed, Convolvulus spithamaeus.= 3b. Stem trailing or twining; leaves sagittate or hastate --4. 4a. Calyx almost concealed by two large heart-shape bracts --5. 4b. Bracts at base of calyx none =Bindweed, Convolvulus arvensis.= 5a. Leaves triangular-hastate, with sharp basal lobes =Bindweed, Convolvulus sepium.= 5b. Leaves oblong-ovate, the basal lobes obtuse =Bindweed, Convolvulus sepium var. pubescens.= 6a. Stem smooth or nearly so; ovary 2-celled (flowers white) =Wild Potato Vine, Ipomoea pandurata.= 6b. Stem with reflexed hairs; ovary 3-celled (flowers of various colors) =Morning Glory, Ipomoea purpurea.= 7a. Introduced weed, growing as a parasite on clover =Dodder, Cuscuta epithymum.= 7b. Native species, on various shrubs and herbs --8. 8a. Flowers sessile --9. 8b. Flowers distinctly pedicelled --12. 9a. Sepals united below into a gamosepalous calyx --10. 9b. Sepals separate from each other --11. 10a. Calyx-lobes obtuse =Dodder, Cuscuta arvensis.= 10b. Calyx-lobes acute =Dodder, Cuscuta obtusiflora.= 11a. Flowers in dense rope-like twists on various species of herbs =Dodder, Cuscuta paradoxa.=