A Grammatical Dictionary of Botanical Latin

longitudinal, along the long axis of an organ: longitudinalis,-e (adj.B); cf. sulcatus,-a,-um (part.A), q.v., with deep longitudinal folds; opp. transversus,-a,-um (adj.A), transverse, crosswise, extended or lying across or in a crosswise direction;

- dentibus linea mediana longitudinali notatis, with the teeth marked with a median longitudinal line.

- dentibus peristomii linea mediana longitudinali in acumine dissoluta notatis, (DozyMoek), with the teeth of the peristome marked with a longitudinal median line, dissolved in the acumen.

- (algae) medium frondis occupatur filis articulatis longitudinalibus simplicibus, superne versus peripheriam arcuatim excurrentibus crassioribus (Agardh), the middle of the frond is occupied by longitudinal [i.e. along the axis] jointed, undivided filaments, above [i.e. distally] toward the periphery running out in the manner of a bow, thicker.

oblique, q.v. (as in bryology) “slanted; e.g., an oblique leaf insertion is one that is between transverse and longitudinal” (Magill 1990): obliquus,-a,-um (adj.A).

transverse, q.v., crosswise, extended or lying across or in a crosswise direction, as opposed to longitudinal (i.e. along the long axis): transversus,-a,-um (adj.A).