Epithets
| bombycifera | silk bearing |
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| bombycis | silky |
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| borealis | northern |
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| botryodes | grape like, clustered |
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| botryoides | grape like, clustered |
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| botrys | grape |
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| brachy | prefix meaning "short" |
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| bractealis | with bracts |
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| bracteata | with bracts |
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| bracteatus | with bracts |
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| brevi | prefix meaning "short" |
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| bryoides | moss-like |
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| bullata | inflated, knobby |
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| bullatus | inflated, knobby |
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| caelestinus | sky blue |