1 |
Rhizoidal tubers usually 120-200(-300) µm, purple-red, orange, yellow, red, or red-brown |
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(2) |
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Rhizoidal tubers usually smaller than 100(-120) µm, brown, red, crimson, purple-red, yellow, orange-brown, or orange |
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(5) |
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2 (1) |
Rhizoids red-violet to deep red; tubers purple-red or rarely orange. |
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15 Gemmabryum ruderale |
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Rhizoids yellow, yellow-red, brown, or red-brown; tubers yellow, orange, red-brown, or red |
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(3) |
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3 (2) |
Rhizoids yellow; tubers yellow to rarely orange. |
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17 Gemmabryum tenuisetum |
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Rhizoids yellow-red, brown, or red-brown; tubers red to red-brown |
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(4) |
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4 (3) |
Costae short- to long-excurrent, awns yellow to red; proximal laminal cells quadrate to occasionally short-rectangular; calcareous substrates. |
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14 Gemmabryum radiculosum |
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Costae short-excurrent, awns red-brown; proximal laminal cells short- rectangular; siliceous substrates. |
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16 Gemmabryum subapiculatum |
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5 (1) |
Medial and distal laminal cells (4-)6-8:1, longer than 60 µm; alar cells sometimes differentiated; tubers pyriform, brown; rhizoids brown to red-brown; limbidium absent or present |
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(6) |
+ |
Medial and distal laminal cells 3-4:1, usually shorter than 60 µm; alar cells similar to adjacent juxtacostal cells; tubers usually irregularly spheric, sometimes pyriform, purple-red, red, crimson, yellow, orange-brown, or orange; rhizoids hyaline, pale yellowish brown, red-brown, pale tan, brown, violet, purple, or rarely red-purple; limbidium absent or rarely indistinct |
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(7) |
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6 (5) |
Medial and distal laminal cells 6-8:1, 60-100(-120) µm; alar cells quadrate; bulbils occasionally present; limbidium absent. |
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11 Gemmabryum apiculatum |
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Medial and distal laminal cells usually 4-6:1, 60-80 µm; alar cells rectangular; bulbils absent; limbidium often present. |
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18 Gemmabryum valparaisense |
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7 (5) |
Rhizoids violet, purple, or rarely red-purple; tubers irregularly spheric, purple-red or rarely orange. |
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19 Gemmabryum violaceum |
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Rhizoids hyaline, pale yellowish brown, pale tan, brown, or red-brown; tubers irregularly spheric or pyriform, yellow, orange-brown, red, or crimson |
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(8) |
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8 (7) |
Tubers pyriform, yellow to orange-brown, in clusters of 2-5 on short lateral rhizoids of main rhizoids at stem base. |
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12 Gemmabryum demaretianum |
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Tubers irregularly spheric, red to crimson, on long rhizoids in soil. |
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13 Gemmabryum klinggraeffii |
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