Paraphysis

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paraphysis

[pə′raf·ə·səs]
(botany)
A sterile filament borne among the sporogenous or gametogenous organs in many cryptogams.
(vertebrate zoology)
A median evagination of the roof of the telencephalon of some lower vertebrates.

Paraphysis

 

one of the multicellular filaments or single cells borne among the gametogenous or sporogenous organs of certain brown algae, most basidiomycetous and ascomycetous fungi, and mosses. Paraphyses protect the organs from trauma and desiccation.

References in periodicals archive ?
1: Cerotelium fici (A) Lucida drawings of urediniospores showing echinulate ornamentation (B) Uredinium showing urediniospores surrounded by several incurved paraphyses as seen by scanning electron microscope.
Asci elongated with short stalked, colorless, 10-25 x 20-30 [micro]m, 8 spored, paraphyses lacking.
Paraphyses: Slender, forking near the base, not enlarging upward, containing red granular material, 2-4 [mu]m broad; stains green in Melzer's solution.
Paraphyses filiform 2-3.7 [mu]m, wide at the base, tapering above asci.
quijos the paraphyses have with two pedunculated setae and the aedeagal apodeme is not curved.
Teliospores 1-2 celled, clavate to ellipsoid, chestnut brown at the apex and cinnamon brown to paler basally, slightly constricted at the septum, two-celled teliospores (15-) 16-20 (-22) x (27-) 30-54 (-60) um; wall 1-1.5 um thick, smooth; one-celled teliospores clavate or ellipsoid, 13-25 x 27-31 um; apex conical, obliquely conical or truncated, sometimes rounded, chestnut brown, 3-4 um thick; pedicel short, persistent, light brown to dark brown, 6-9 x 4-10 um; paraphyses clavate, brown, 3.3-6 x 31-51 um.
Paraphyses moderately branched and anastomosed, 1,2-2 [micro]m wide.
The genus is characterized by lecanorine apothecia, blood red to orange-red discs and thallus-coloured margins, epihymenium with red pigments, paraphyses somewhat branched and anastomosing, Lecanora-type asci, ascospores hyaline, oblong, fusiform to broadly acicular and transversely septate (3-25 septa) to submuriform (Brodo et al., 2001; Elix, 2004).
Perichaetia lateral on stem; inner perichaetial leaves straight, plicate, lanceolate, erect, margin entire, apex acuminate, costa absent or sometimes short and single, cells fusiform to linear, thin-walled and smooth; vaginula with paraphyses. Seta long (3,5-5,0 cm), reddish, slightly twisted, smooth.