6a. Stem-leaves about 1 cm. long --3a. 6b. Stem-leaves 5-10 cm. long =Star Flower, Trientalis americana.= 7a. Flowers red, blue, or white (summer) --8. 7b. Flowers yellow (summer) --9. 8a. Leaves opposite; flowers axillary (stems spreading, 1-4 dm. long; flowers blue or red) =Pimpernel, Anagallis arvensis.= 8b. Leaves alternate; flowers racemose (1-4 dm. high; flowers minute, white) =Water Pimpernel, Samolus floribundus.= 9a. Stem creeping =Moneywort, Lysimachia nummularia.= 9b. Stem erect (Loosestrife) --10. 10a. Flowers in dense spike-like racemes (3-8 dm. high) =Loosestrife, Lysimachia thyrsiflora.= 10b. Flowers axillary or racemose (3-9 dm. high) --11. 11a. Corolla dotted or streaked with purple or brown; leaves punctate with dark spots --12. 11b. Corolla plain yellow; leaves not dark-dotted --14. 12a. Flowers in racemes --13. 12b. Flowers all axillary =Loosestrife, Lysimachia quadrifolia.= 13a. Flowers all in racemes; leaves opposite or some of them alternate =Loosestrife, Lysimachia terrestris.= 13b. The lowest flowers axillary; leaves opposite or whorled =Loosestrife, Lysimachia producta.= 14a. Leaves ovate, on slender ciliate petioles =Loosestrife, Steironema ciliatum.= 14b. Leaves lanceolate, sessile or short-petioled, pinnately veined =Loosestrife, Steironema lanceolatum.= 14c. Leaves linear, with one mid-vein =Loosestrife, Steironema quadriflorum.= OLEACEAE, the Olive Family Trees or shrubs, with opposite leaves and regular flowers; sepals 4, or calyx none; petals 4, united, or none; stamens usually 2; ovary 2-celled, superior. 1a. Leaves simple (shrub 2-5 m. high; flowers blue or white, in showy clusters in spring) =Lilac, Syringa vulgaris.= 1b. Leaves compound (trees; flowers greenish, inconspicuous, in spring) (Ash) --2. 2a. Lateral leaflets sessile =Black Ash, Fraxinus nigra.= 2b. Lateral leaflets stalked --3. 3a. Twigs sharply 4-angled =Blue Ash, Fraxinus quadrangulata.= 3b. Twigs not distinctly angled --4. 4a. Leaves pubescent beneath =Red Ash, Fraxinus pennsylvanica.= 4b. Leaves glabrous beneath --5. 5a. Leaves pale-green beneath, obscurely serrulate =White Ash, Fraxinus americana.= 5b. Leaves bright-green beneath, sharply serrulate =Green Ash, Fraxinus pennsylvanica var. lanceolata.= GENTIANACEAE, the Gentian Family Herbs, with opposite or basal, entire, usually simple leaves and regular flowers; sepals, petals, and stamens equal in number, 4-12; ovary superior, 1-celled.