A Grammatical Dictionary of Botanical Latin

tactus,-a,-um (part.A): touched, handled; reached, attained [> L. tango, tetigi, tactum, 3. to touch, handle, strike, to affect, to take hold of; syn. tractatus,-a,-um (part.A), q.v.; reaching, arriving at; syn. perventus,-a,-um (part.A), ‘arrived at, reached; attained’]; see touched;

- ostia usque 2 mm lata, pallide grisea velrisea vel nigriscentia, ubi tacta cinnamomeo-maculata, ostia to 2 mm wide, pale gray or gray or becoming black, where touched cinnamon-spotted.

- substantia tenera, humida: digito ubicunque tacta colore pulchre sanguineo tingit, the substance is delicate, moist: wherever touched with a finger stains with a beautifully blood red color.

- apex segmentorum seriebus sororum haud tactus, apex by the series of sori not touched (i.e. reached).

- non tantum in truncis ramisque dejectis putredine tactis vulgaris est; sed et in foliis aliisque quisquiliis humi jacentibus udis (S&A), not only is it common on fallen trunks and branches touched with rot, but also on wet leaves and other litter fallen on the ground.

- [fungi] saepe, a sole praesertim justo citius tacta et exusta, in bullas varias corneas solidas pulvere destitutas indurata (S&A), often, especially if more quickly touched and dried out by a moderate sun, hardened into various bullae [i.e. blisters], with the texture of horn, solid, lacking dust [i.e. spores].

Tactus,-us (s.m.IV), abl.sg. tactu: a touching, touch, handling; effect, influence; the sense of touch; see touch;

- tactu solis, by the influence of the sun.

- caespites laete virides, tactu lubricae et eximie flexiles (Agardh), clumps bright green slippery to the touch and exceptionally supple.

- [fungi] villus tegmineus delicatus digiti tactu vel levissimo illico abstersus pulverem ostendit (S&A), the delicate villus [i.e. villocity] a covering [i.e. serving as a cover, protection], when immediately broken up by the lightest touch with the finger, displays a powder [i.e. perhaps spores].

- caespites densissimi subsphaerici, diametro semipollicares, tactu lubrici, sub aqua ex violaceo et purpureo iridescentes, in exsiccata purpurascentes (Agardh), clumps very dense, almost spheric, one half-inch in diameter, lubricous [i.e. smooth and slippery, slimy] to the touch, under water from a violet color and a purple color iridescent, in exsiccate [i.e. dried specimens] purplish.

- superna facies subcinericea, ad albidum nonnihil vergens, viscido tactu, fungosis verrucis eminentibus conspersa (Ray), the upper part varying from little like ashes to somewhat whitish, with a viscid feel [i.e. sticky to the touch], sprinkled with projecting, spongy warts [i.e. swellings].