perigynium


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perigynium

[‚per·ə′jin·ē·əm]
(botany)
A fleshy cup- or tubelike structure surrounding the archegonium of various bryophytes.
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7 times as long as wide--#6), perigynium beak relatively long (beak at least 32% the length of the perigynium--#7), culm with chlorenchyma present between bundle cap and epidermis for at least two of three vascular bundles at the angles of the culm (#18), and distal portion of perigynium body only one cell thick (#21).
The synapomorphies shared by these three species are entire or sparsely serrulate perigynium beaks (#9, also possessed by C.
Granulares: lateral spikes with 25 or more perigynia per spike (#22), perigynia loosely enveloping the achenes (#29), and perigynium epidermis with scattered pigment cells (#47).