A Grammatical Dictionary of Botanical Latin

percurrent, i.e. extending the whole length of an organ but not continued beyond it; extending to the apex; cf. subpercurrent,’ ending just below the apex’, and excurrent, ‘extending beyond the apex;’ (in fungi) “extending through the entire length; (of columella of Gasteromycetes) joining the peridium at the apex of the gleba (Cunningham); also applied to other situations in other fungi, even to conidial germ tubes” (S&D): percurrens,-entis (part.B) [> L. percurro, percurrere, per(cu)curri, percursum, 3, to run quickly over or through; to form a continuous line, to pass through; to run through in a sequence (Lewis & Short)]; see percursus,-a,-um (part.A);

- folia costa percurrente, leaves with a percurrent midrib (costa).

- costa percurrens haud excurrens, midrib percurrent never excurrent (Stearn).

- nervo in medio folii evanido vel subpercurrente, with the nerve disappearing in the middle of the leaf to subpercurrent.

- [moss] folia late convoluta [i.e. longitudinally rolled up], marginibus involutis, nervo crasso calli instar folium percurrente(C.Muell.), leaves broadly convolute, with the margins inrolled, with the nerve thick like a callus extending [throughout] the leaf.

- [Fucus esculentus] fucus fronde simplici indivisa, ensiformi, petiolo pinnato folium percurrente (Necker), Fucus with the frond simple, undivided, sword-shaped, the leaf with a pinnate, percurrent petiole.

Percurrent columella: (in fungi) “[with the columella] joining the peridium at the apex of [the] gleba” (Ainsworth & Bisby): columella,-ae (s.f.I) percurrens, abl. sg. columella percurrente; see columella,-ae (s.f.I).