| 1 |
Calyx tubular or tubular-campanulate. |
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(2) |
| + |
Calyx obconical. |
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(11) |
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| 2 (1) |
Calyx teeth minute, mouth subtruncate, pleated |
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10 Paraphlomis membranacea |
| + |
Calyx teeth conspicuous, broadly triangular to subulate, apex bristlelike to acute. |
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(3) |
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| 3 (2) |
Leaves ovate, ovate-orbicular, or subcircular. |
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(4) |
| + |
Leaves elliptic, elliptic-ovate, to oblong-elliptic. |
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(6) |
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| 4 (3) |
Stems and leaves sparsely bristly; calyx tube densely bristly, teeth narrowly triangular, apex bristlelike |
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7 Paraphlomis seticalyx |
| + |
Stems, leaves, and calyces densely pubescent and/or villous; calyx teeth broadly triangular, apex acute. |
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(5) |
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| 5 (4) |
Erect herbs; stems, leaves, and calyces densely villous and pubescent; corolla densely white villous outside; bracteoles minute |
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8 Paraphlomis albiflora |
| + |
Ascending herbs; stems, leaves, and calyces densely villous only; corolla sparsely pubescent outside; bracteoles linear, 2-5 mm |
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9 Paraphlomis foliata |
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| 6 (3) |
Calyx bristly. |
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(7) |
| + |
Calyx not bristly. |
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(9) |
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| 7 (6) |
Leaves ± leathery; leaves and stem glabrous; calyx sparsely white bristly at apex and along veins otherwise strigose |
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4 Paraphlomis paucisetosa |
| + |
Leaves membranous or thin papery; leaves and stem hairy; calyx densely bristly. |
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(8) |
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| 8 (7) |
Leaves thin papery; leaves and stem densely spreading bristly |
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5 Paraphlomis patentisetulosa |
| + |
Leaves membranous, strigose and finely papillate except for hispid veins of adaxial surface; abaxially white granular, finely strigose and sparsely hispid; stem densely retrorse fine strigose |
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3 Paraphlomis hispida |
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| 9 (6) |
Stems and calyx densely tawny hirsute |
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2 Paraphlomis hirsutissima |
| + |
Stems and calyx not tawny hirsute. |
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(10) |
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| 10 (9) |
Stems retrorse strigose; calyx glabrous or hirtellous becoming glabrescent in fruit |
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1 Paraphlomis javanica |
| + |
Stems and calyx densely and finely bristly puberulent |
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6 Paraphlomis setulosa |
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| 11 (1) |
Calyx teeth lanceolate-triangular, acute. |
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(12) |
| + |
Calyx teeth not lanceolate-triangular. |
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(15) |
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| 12 (11) |
Verticillasters surrounded by leaflike bracts, with linear basal bracteoles |
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11 Paraphlomis albotomentosa |
| + |
Verticillasters surrounded by linear bracts, with bristlelike basal bracteoles. |
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(13) |
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| 13 (12) |
Leaves elliptic or elliptic-ovate; calyx densely tomentose outside |
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12 Paraphlomis tomentosocapitata |
| + |
Leaves broadly ovate or ovate-lanceolate to lanceolate; calyx pubescent outside. |
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(14) |
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| 14 (13) |
Leaves 3-5 cm wide; calyx ca. 9.5 mm; corolla ca. 1.8 cm |
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13 Paraphlomis lancidentata |
| + |
Leaves 6.5-9.5 cm wide; calyx ca. 11 mm; corolla ca. 1.4 cm |
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14 Paraphlomis reflexa |
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| 15 (11) |
Calyx teeth triangular or inconspicuous, calyx mouth subtruncate, distinctly extended into winged extensions from veins. |
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(16) |
| + |
Calyx teeth broadly triangular to broadly ovate-triangular or subulate, apex acuminate to acute. |
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(17) |
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| 16 (15) |
Leaves oblong to ovate-oblong, 5-8 × 2.4-3.4 cm, margin undulate-crenate; calyx teeth conspicuously triangular, calyx mouth not subtruncate |
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22 Paraphlomis brevifolia |
| + |
Leaves lanceolate to narrowly lanceolate, 7-15 × 1.5-3 cm, margin remotely, shallowly serrate above base; calyx teeth inconspicuous, calyx mouth subtruncate |
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23 Paraphlomis subcoriacea |
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| 17 (15) |
Apical part of stem, petiole, and abaxial leaf surface densely retrorse pilose, especially on leaf veins |
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19 Paraphlomis albida |
| + |
Apical part of stem, petiole, and abaxial leaf surface not densely retrorse pilose. |
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(18) |
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| 18 (17) |
Plants sparsely pubescent or subglabrous |
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16 Paraphlomis lanceolata |
| + |
Plants densely retrorse strigose or pubescent. |
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(19) |
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| 19 (18) |
Corolla tube shorter than calyx tube; calyx teeth subulate |
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15 Paraphlomis gracilis |
| + |
Corolla tube longer than calyx tube; calyx teeth not subulate. |
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(20) |
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| 20 (19) |
Leaves lanceolate to sublanceolate. |
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(21) |
| + |
Leaves ovate. |
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(22) |
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| 21 (20) |
Stems densely spreading pubescent toward base, conspicuously grooved; leaves lanceolate, apex long acuminate, base attenuate; petiole ca. 2 cm; corolla conspicuously hairy annulate inside; ovary glabrous |
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17 Paraphlomis parviflora |
| + |
Stems densely pubescent throughout, not grooved; leaves oblong-elliptic, apex acute, base cuneate; petioles ca. 1 cm; corolla inconspicuously hairy annulate inside; apex of ovary puberulent |
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18 Paraphlomis kwangtungensis |
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| 22 (20) |
Leaves membranous; corolla tube much exserted; anthers ciliate; ovary glabrous |
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20 Paraphlomis intermedia |
| + |
Leaves papery; corolla tube slightly exserted; anthers not ciliate; ovary apex pubescent |
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21 Paraphlomis pagantha |
