A Grammatical Dictionary of Botanical Latin

perigynous, “growing upon some part which surrounds the ovary, usually the calyx; but in the “Vegetable Kindgom” the corolla also is included within the meaning of the term” (Lindley); “literally means round the ovary, used of organs adnate to the perianth [i.e. calyx and corolla], or adnate with the lower part of the pistil” (Jackson); “adnate to the perianth and therefore around the ovary and not at its base” (Fernald 1950); “borne on a ring or cup of the receptacle surrounding a pistil; having stamens and petals borne on a ring or cup of the receptacle surrounding a pistil and usually adnate to the calyx although appearing to be situated upon it” (WIII) [> Gk. peri- + gynE, woman]: perigynicus,-a,-um (adj.A), perigynus,-a,-um (adj.A); cf. epigynous, hypogynous;

- stamina petalis isomera v. saepe numero dupla, rarius oo, perigyna v. epigyna, nunc hypogyna, erecta v. patentia (B&H), petals the same [number of parts with] the petals or double in number, very rarely [indefinite], perigynous or epigynous, sometimes hypogynous, erect or spreading.

- petala saepissime 4 v. 5, raro 0, perigyna, rarius epigyna, rarissime hypogyna (B&H), the petals most often 4 or 5, rarely 0, perigynous, more rarely epigynous, most rarely hypogynous.

- stamina fere perigyna imo calyci inserta, rarius tetradynama, saepius ordine quaternario multiplici disposita (DeCandolle), stamens almost perigynous, inserted at the lowest part of the calyx, more rarely tetradynamous [i.e. with four long stamens and two short stamens], more often arranged in a multiple order in fours.

- petala 4-5 dentibus calycinis alterna, disco ovarium ambiente extus inserta et ideo inter hypogyna et perigyna ambigua (DeCandolle), the petals alternate with the 4-5 calyx-teeth, with the disc surrounding the ovary on the outside and consequently ambiguous between hypogynous and perigynous.

- pet. 4 dentibus calycinis alterna, disco perigyno inserta (DeCandolle), petals [petala] with 4 teeth, alternate to those of the calyx, inserted on the perigynous disc.

- [Saxifrageae] stamina ad basin disci cum basi ovarii confluente inserta, hypogyna v. subperigyna (B&H), the stamens inserted on the base of the disc confluent with the base of the ovary, hypogynous or nearly [i.e. somewhat] perigynous.

- [Saxifrageae) petala 5, aequalia v. rarissime inaequalia, nunc basi fimbriata v. glanduligera, perigyna v. subhypogyna (B&H), petals 5, equal or very rarely unequal, sometimes fimbriate [i.e. fringed] at the base or bearing little glands, perigynous or nearly hypogynous.

- [Saxifrageae] petala 5, perigyna, ovato-deltoidea, basi lata cum disco epigyno confluentia, (B&H), petals 5, perigynous, ovate-deltoid, broad at the base, confluent with the epigynous disc.

- [Saxifrageae] stamina 5, erecta, sub margine disci perigyni inserta (B&H), stamens 5, erect, inserted below the margin of the perigynous disc.

peristomatic, “when the perigynous stamens are attached round the mouth of the calyx tube” (Jackson): peristomaticus,-a,-um (adj.A).

NOTE: a disc can be the “development of the torus [i.e. receptacle] within the calyx or within the corolla and stamens” (Jackson); with respect to the pistil (gynoecium) it may be epigynous, perigynous or hypogynous. In B&H, Saxifrageae, the disc for the petals is described separately from that of the stamens (i.e. epigynous, perigynous and hypogynous).