No key was found for the requested taxon, but it has only one child: Euphrasia stricta var. stricta. Showing where it is keyed below.
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Key to Orobanchaceae
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40494
1 Plants lacking chlorophyll (holoparasitic), with foliage and stems variously pink, purple, brown, tan, orange, or white. | |
2 Stem paniculately branched; flowers dimorphic, those low in the inflorescences small, pistillate, and fertile, those high in the inflorescence larger, apparently perfect but functionally staminate; [tribe Orobancheae] | |
6 Calyx tubular, with 4 (-5) lobes about the length of the calyx tube; stem branched (except in depauperate individuals) | |
1 Plants with chlorophyll (hemiparasitic), with foliage and stems normally green. | |
9 Bracts subtending flowers orange, red, or yellow; calyx 4-lobed; capsule loculicidal; pedicel lacking bracteoles; seeds broad, wingless; [tribe Castillejeae] | |
9 Bracts subtending flowers green; calyx 5-lobed; capsule septicidal and tardily also loculicidal; pedicel with 2 bracteoles; seeds narrow, winged; [tribe Cymbarieae] | |
14 Stem leaves entire (bracteal leaves in and near the inflorescence sometimes pectinately fringed); seeds 1-4 per capsule | |
15 Corolla yellow or orange; leaves either lanceolate or broader, at least the basal pinnately or bipinnately lobed or toothed, or pinnately or bipinnately divided into linear segments. | |
16 Leaves not lobed or divided, or the segments broader; corolla tubular, campanulate, or funnelform, the tube much longer than the lobes. | |