1 |
Plicae margin fringed. |
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(2) |
+ |
Plicae margin erose, denticulate, or short laciniate. |
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(4) |
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2 (1) |
Annuals; calyx tube with broad wings; corolla 2.3-2.5 cm |
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107 Gentiana alata |
+ |
Perennials; calyx tube with narrow wings or merely sharply ridged along veins; corolla 2.5-4.5 cm. |
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(3) |
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3 (2) |
Stems, leaves, and calyces densely white and purple pilose; calyx tube prominently veined but not winged |
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106 Gentiana villifera |
+ |
Plant glabrous or puberulent on petioles and leaf veins only; calyx tube narrowly winged |
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108 Gentiana rhodantha |
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4 (1) |
Corolla yellow, greenish yellow, or yellowish white. |
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(5) |
+ |
Corolla pale to dark blue, violet, or purple. |
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(6) |
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5 (4) |
Corolla tube outside puberulent along veins, sometimes purple suffused but not distinctly striped; lobes slightly acuminate to subacute; plicae horizontally truncate, margin erose; stamens inserted near base of corolla tube |
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110 Gentiana souliei |
+ |
Corolla tube glabrous, distinctly dark striped; lobes long acuminate to caudate; plicate obliquely truncate, margin denticulate; stamens inserted at middle of corolla tube |
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109 Gentiana striata |
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6 (4) |
Calyx tube angled, sometimes with slightly rough sharp ridges but without conspicuous wings. |
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(7) |
+ |
Calyx tube conspicuously winged. |
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(9) |
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7 (6) |
Corolla blue, 2.5-3.2 cm, tubular to funnelform; limb to 12 mm wide |
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111 Gentiana leptoclada |
+ |
Corolla violet to purple, 1-2 cm, salverform; limb 7-10 mm wide. |
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(8) |
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8 (7) |
Calyx lobes subulate; plicae triangular, 2.5-3 mm, margin erose |
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112 Gentiana primuliflora |
+ |
Calyx lobes narrowly ovate to triangular; plicae lanceolate, 4-6 mm, margin denticulate |
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113 Gentiana expansa |
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9 (6) |
Corolla 3-4.5 cm; calyx lobes narrowly elliptic, lanceolate, or ovate-lanceolate, base narrowed. |
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(10) |
+ |
Corolla 2.2-3 cm; calyx lobes linear to subulate, base not narrowed. |
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(11) |
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10 (9) |
Leaf blade 1.3-2.5 cm; internodes 3-8 cm; calyx tube broadly winged; corolla lobes obtuse; seeds broadly winged |
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114 Gentiana pterocalyx |
+ |
Leaf blade 0.7-1.2 cm; internodes 1-2.5 cm; calyx tube narrowly winged; corolla lobes acuminate; seeds narrowly winged or wingless |
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115 Gentiana eurycolpa |
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11 (9) |
Leaves toward stem apex adaxially hispidulous on veins; plicae margin erose; ovary gynophore 8-10 mm |
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116 Gentiana gentilis |
+ |
Leaves all adaxially glabrous; plicae margin denticulate; ovary gynophore 5-7 mm |
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117 Gentiana serra |
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