3–8(–12) cm, coriaceous or thin, lobes 0 or 3–5(–8) per side, sinuses shallow, max LII usually 20%, veins (3–)5–8 per side, absent to sinuses. Inflorescences:
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trianthophoros, Triphora yucatanensis Nuttall Gen. N. Amer. Pl. 2: 192. 1818. Max E. Medley Common names: Three-birds orchid Etymology: Greek tri, 3-fold, and
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matte, lobes small, max LII ca. 10%; flowers 10–14 mm diam.; pomes dull; n Okanagan. Crataegus atrovirens 6 Leaves shiny, lobes larger, max LII 15–25%; flowers
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trianthophoros (Swartz) Rydberg in N. L. Britton, Man. Fl. N. States, 298. 1901. Max E. Medley Common names: Nodding pogonia Illustrated Basionym: Arethusa trianthophoros Swartz
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flowering), thin-chartaceous, base cuneate, lobes 2–4 per side, sinuses: max LII 20%, lobe apex acute, margins serrate, teeth small, veins 4 or 5 per side
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cuneate to cuneate-rounded, lobes 2–4 per side, sinuses moderately deep, max LII (0–)15–25%, lobe apex subacute to acute, margins crenate-serrate or serrate
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sinuses deep (max LII 25–50%), lobe apices usually ± narrowly cuspidate. Crataegus incilis 5 Lobes 1–4 per side, sinuses shallow (max LII 10–30%), lobe
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genusTriphora speciesTriphora yucatanensis Ames Orchidaceae 7: 39, plate 109. 1922. Max E. Medley Synonyms: Triphora rickettii Luer Treatment appears in FNA Volume
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genusTriphora speciesTriphora craigheadii Luer Brittonia 18: 243, figs. 5–8. 1966. Max E. Medley Endemic Treatment appears in FNA Volume 26. Treatment on page 595
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broadly elliptic, bases rounded to broadly cuneate, lobe apices subacute, max LII 5–10%, veins 6 or 7 per side; Great Lakes region and eastwards. Crataegus
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mm diam.; pomes 8–15 mm diam > 3 3 Leaf blades ± ovate, sinuses shallow (max LII 15–20%), proximal lobes almost never most deeply separated, spreading
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speciesTriphora amazonica Schlechter Beih. Bot. Centralbl. 42: 75. 1925. Max E. Medley Synonyms: Triphora latifolia G. M. Luer Treatment appears in FNA
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very broadly cuneate, lobes 3 or 4 per side, sinuses very shallow to ± deep, max LII 5–20%, lobe apex acute, margins serrulate, venation camptodromous, veins
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gentianoides (Swartz) Ames & Schlechter in O. Ames, Orchidaceae 7: 5. 1922. Max E. Medley Illustrated Basionym: Limodorum gentianoides Swartz Prodr., 119
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rhombic, lobes distinct, 2 or 3 per side, sinuses shallow to moderately deep, max LII 15–40%, veins 4 or 5 per side. Crataegus viridis var. viridis 2 Leaf blades
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elliptic, 4–6(–7) cm, subcoriaceous, base cuneate, lobes 3 or 4 per side, small, max LII ca. 10%, lobe apex acute, margins serrulate, minutely glandular at apices
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base cuneate to broadly cuneate, lobes (2 or)3 or 4 per side, pronounced, max LII 15–25%, lobe apex acute, margins serrate, teeth numerous, small, acute
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speciesTriphora trianthophoros subspeciesTriphora trianthophoros subsp. trianthophoros Max E. Medley Illustrated Synonyms: Triphora trianthophora var. schaffneri Camp
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blades ± ovate, 3–6 cm, base rounded to broadly cuneate, sinuses shallow (max LII 15–20%). Inflorescence branches glabrous. Flowers 24–26 mm diam. Pomes
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Leaf blades narrowly ovate, 3–4 cm, base ± narrowly cuneate, sinuses deep (max LII 15–20%). Inflorescence branches sparsely pubescent. Flowers 15–20 mm diam
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