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[GENUS BOTHRIOCHLOA
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110a
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(103) |
First glume with a distinct pit (<1 mm across), visible to naked eye (if you have good eyesight; see Fig. 19B below) .. .
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[111] |
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110b
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Glumes of spikelets lacking pits .. .
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[113] |
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111a
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(110) |
Racemes subdigitate or arranged on the culm (axis) over a distance less than the length of a raceme .. .
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[112] |
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111b
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Racemes arranged on the culm (axis) over a distance greater than the length of a raceme. Pedicels especially with many long hairs. Sessile spikelets 3 - 4.5 mm long { medium-size bunching grass, typically in disturbed sites and grassed verges. (See also couplet [116a]) [HAW - NAT] [?GUM - NAT] [FACU] Bothriochloa bladhii (Retz.) S. T. Blake
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112a
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(111) |
Pedicellate spikelets generally similar to sessile spikelets or very slightly reduced; pedicellate spikelets with or without a pit. Sessile spikelets 3–4 mm long. Racemes usually weakly erect to strongly divergent from axis { Extremely common small grass in lawns, road verges, and open dry to mesic lands. Pitted beardgrass [HAW - NAT] [?GUM - NAT]Bothriochloa pertusa (L.) A. Camus
Figure 19A. Bothriochloa pertusa inflorescences with fan-shaped arrangement of racemes arising close together and (inset) glumes with a small pit (clearly visible with a small hand lens; see Fig. 19B below).
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112b
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Pedicellate spikelets narrower than sessile spikelets, with or without a pit. Sessile spikelets 5–7 mm long. Ligule a membrane with sparse, minute cilia at apex. [HAW - NAT] { Racemes usually held stiffly erect; resembles B. pertusa. [HAW - NAT] Bothriochloa macra (Steud.) S. T. Blake
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113a
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(110) |
Pedicellate spikelets narrower than sessile spikelets .. .
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[114] |
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113b
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Pedicellate spikelets similar in width to sessile spikelets .. .
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[106] |
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114a
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(113) |
Pubescence of inflorescence of long hairs that obscure spikelets, whitish in color at maturity.. .
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[115] |
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114b
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Pubescence of inflorescence of hairs under 2 mm long, not obscuring spikelets. Inflorescence reddish or whitish in color .. .
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[116] |
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115a
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(114) |
Culm node with long hairs (villous), node may be dark purple in color. Sessile spikelet ovate, 4.5-7.3 mm long; pedicelled spikelet linear or lanceolate, 2-5 mm long. Ligule membranous without cilia (eciliate). { Uncommon, medium-sized, tufted perennial. Fuzzy top [HAW - NAT] [UPL]Bothriochloa barbinodis (Lag.) Herter
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115b
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Culm nodes glabrous. Sessile spikelet ovate, 2.5-4.5 mm long; . {?Rare, medium-sized, tufted perennial. Fuzzy top [HAW - ?NAT] Bothriochloa laguroides (DC.) Herter
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116a
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(114 & 111) |
Racemes attached along central axis from nodes spaced apart greater than length of a raceme. Pedicels especially with many long hairs. Sessile spikelets 3 - 4.5 mm long { common, medium-size bunching grass, in disturbed sites and grassed verges. (See also couplet [111b]) [HAW - NAT] [FACU]Bothriochloa bladhii (Retz.) S. T. Blake
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116b
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Racemes attached along central axis over a distance less than length of a raceme .. .
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[117] |
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117a
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(116) |
Racemes 3 - 6 in number. Sessile spikelets 4.5–7 mm long. Ligule a membrane with sparse, minute cilia at apex. { Racemes usually held stiffly erect; resembles B. pertusa [HAW - NAT]Bothriochloa macra (Steud.) S. T. Blake
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117b
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Racemes 5 - 15 in number. Sessile spikelets 3.5–5 mm long, pedicelled spikelet similar in length. Bothriochloa ischaemum (L.) Keng
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