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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2 mm wide, trigonous with elliptical sides, pale brown, occupying upper two-thirds of perigynium body.
7-1 mm wide, loosely enveloped by perigynium, dark brown, stipitate with stipes 0.
1D), differs from the mainland species by having appreciably smaller perigynia, a shorter cylindrical perigynium beak, and achenes with shorter stipes (see Fig.
5-7 mm long, projecting beyond orifice of perigynium, exserted portion 2.
Notably, a perigynium, pistillate scale, and achene of this species have been illustrated by Skottsberg (1922: 107, Fig.
Indeed, the perigynia, achenes, and leaves of both species manifest notable similarities: namely, perigynium shape, texture, and vestiture; achene shape; and leaf vestiture.
9 mm wide, elliptic to broadly elliptical, abaxially and adaxially appressed hispid distally and smooth (or nearly so) proximally, the margins ciliate-scabrous above the middle, stramineous but often with brown maculations or brownish, 2 prominent veins and the others obscure or weak proximally on both faces, gradually tapered to a puckered base (when dry); perigynium beak 0.
5-4 cm long, more or less loosely-flowered; perigynium smooth but sometimes sparingly hispidulous distally, 1.
5-4 1-2 Spike aspect more or less tightly-flowered loosely-flowered Perigynium length (mm) 5-6 (3.
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).
Perigynium shape: widest near middle (0), widest at or very near base (1) 6.