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A Grammatical Dictionary of Botanical Latin

Axis, “the stem including the root; or any center round which leaves and other such organs are arranged: (Lindley); “(of the stem, inflorescence, stc.) The central part of a longitudinal support on which organs or parts are arranged” (Fernald 1950); a straight line about which a 3-dimensional body rotates; a straight line around which a body, figure or system of points is either radially or bilaterally symmetrical; the axis of a sphere: axis,-is (s.m.III, an i-stem noun), dat.sg. axi, acc. sg. axem or axin, abl. sg. axe, nom & acc. pl. axes, gen. pl. axium, dat.& abl. pl. axibus [an i-stem noun] [> L. axis,-is (s.m.III) 'an axle-tree about which a round body, such as a wheel, turns; the axis of the earth (mundus)']; see discussion at shoot; see trunk.

NOTE: in some groups, such as Hepatics (liverworts), the term ‘axis’ may be used rather than “stem” or “shoot” as these latter terms have technical implications that need to be avoided (especially relating to the origin of tissues). E.g. ) ‘shoot’ (liverworts) = “the main leaf-bearing axis or any leafy, non-fertile or fertile branch” (Paton); ‘stem’ = (liverworts) “the main axis of a foliose [not thalloid] gametophyte” (Paton). For example, axile tissue is also stem or shoot tissue.

- carpella matura ab axi secedentia (B&H), mature carpels separating from the axis.

- zygosporae parallelae ad axes suos dispositae, zygospores parallel arranged parallel to their own axes.

- loculus parallelus ad axem, loculus parallel with the axis.

- axis mas femineus vel asexualis, axis male female or asexual.

- folia axium principalium, leaves of the main axes.

- axis transapicalis, transverse axis (Stearn).

- secus axem, secus axin, along the axis.

- ad axem versus, facing the axis.

- axes mares feminei et asexuales simplices vel ramosi, axes male female and asexual simple or branched.

- frustula circum axem apicalem torta, frustules twisted around the apical axis (Stearn 1983).

- folia axium principalium, leaves of the main axes.

- ex axibus primariis secondariis et tertiariis oriens, arising from the primary, secondary and tertiary axes.

- ovula axi collateraliter affixa: ovules collaterally affixed to the axis.

- quoque axe secundario flores hermaphroditos atque axes tertiarios floribus staminatis praeditos gerente, with each secondary axis bearing flowers hermaphroditic and also [bearing] teriary axes provided with staminate flowers.

- axibus secundariis inflorescentae plus quam trifloris, with the secondary axes of the inflorescence more than three-flowered.

- plantae fructificatione amentiformi; flosculi axin communem obtegunt; plants with an amentiform fructification (inflorescence); the flowerlets covering a common axis.

- carpella matura ab axi secedentia (B&H), mature carpells splitting apart from the axis.

- semina ∞ (parva), glabra, apice in comam sessilem producta, axi comae setiformi pilis longis plumoso (B&H), seeds [numerous] (small), glabrous, at the apex prolonged into a sessile coma [i.e. hair-tuft], with the axis of the coma bristle-like, plumose with long hairs.

NOTE: axialis,-e (adj.B): axial, relating to the axis (not the axil).

apical axis: (diatoms) axis apicalis (adj.B.), abl. sg. axe apicali.

Axis,-is (s.m.III, an i-stem noun) ascendens (adsendens) (part.B); gen. sg. axis ascendentis (adscendentis); abl. sg. axe ascendente (adscendente): the ascending axis = the stem (Lindley).

Axis,-is (s.m.III, an i-stem noun) descendens (part.B); gen. sg. axis descendentis; abl. sg. axe descendente: the descending axis = the root (Lindley).

Axis accessorius (adj.A)), abl.sg. axe accessorio: accessory axis, “an axis of a second rank; secondary to some principal axis” (Lindley); = axis secundarius (adj.A).

Cacumen,-inis (s.n.III), abl. sg. cacumine: extreme point, peak, extreme top, as the summits of mountains, the tree-tops [canopy]; the end, limit; NOTE: Lindley uses this word as ‘obsolete’ or ‘misapplied’ as “the axis of anything. The line, real or imaginary, that passes from the base to the summit of anything” (Lindley). Jackson, however (as obsolete), indicates ‘cacumen’ is “the apex of an organ.”

Caudex,-icis (s.m.III), abl. sg. caudice, nom.& acc. pl. caudices, the axis of a plant, consisting of stem and root” (Lindley); the stem or trunk of a tree; see caudex,-icis (s.m.III).

Corm: cormus,-i (s.m.II), abl. sg. cormo, nom. pl. cormi, acc.pl. cormos, dat. & abl. pl. cormis: “the axis of a plant, consisting of stem and root” (Lindley); see corm.

pervalvar axis: (diatoms) axis pervalvaris (adj.B), abl. sg. axe pervalvari.


A work in progress, presently with preliminary A through R, and S, and with S (in part) through Z essentially completed.
Copyright © P. M. Eckel 2010-2018

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