| 31. | Flowers are yellow, with both ray florets and disc florets.
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| 32. | Flowers are yellow, with both ray florets and disc florets.
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| 33. | This outcrossing occurs when the species florets are open during anthesis.
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| 34. | They also have fertile florets which are diminished at the apex.
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| 35. | Florets are diminished at the apex and have a pubescent callus.
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| 36. | Petals of the tiny white disc florets are 5 mm long.
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| 37. | They bore though the glumes and feed on the florets inside.
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| 38. | It has yellow flowers with both ray florets and disc florets.
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| 39. | It has yellow flowers with both ray florets and disc florets.
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| 40. | Each head has many yellow ray florets but no disc florets.
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