A Grammatical Dictionary of Botanical Latin

binatim (adv.): in pairs, two each, by twos, two at a time; two together; see -natim (adv.); cf. singulatim (adv.), one by one; singly; cf. -farius,-a,-um (adj.A); cf. -merus,-a,-um (adj.A);

- foliolis binatim dispositis, with leaflets arranged in pairs [i.e. in twos].

- suturis binatim dehiscentibus, with sutures dehiscing in pairs.

- individua libera solitaria vel binatim cohaerentia vel seriata vel varie consociata, individuals free solitary or by pairs cohering or in series or variously united.

- petala (sepalave) 4-6, hypogyna subcoriacea, in aestivatione valvata, nunc libera, nunc omnia aut nonnulla binatim coalita et sic semibifida visa (DeCandolle), petals (or sepals) 4-6, hypogynous, somewhat leathery, in aestivation valvate, sometimes free, sometimes all or some fused by twos and thus are seen as half-way bifid.

- fila decumbentia, tenuissima, (ita ut nudo oculo singula non conspicua sint) fragillima, ideoque in parvula frustula variae longitudinis disrupta, rigida, hyalina, linearia, (raro apice attenuata), demum binatim copulata, ita ut post copula (Agardh), the filaments decumbent, very thin (such that individual ones may be inconspicuous to the naked eye), very fragile, and so, for this reason broken off in very small frustules of various lengths, rigid, hyaline, linear (rarely thinned at the apex), ultimately joined in pairs, just as [they are] behind the copula [i.e. girdle band].

- (algae) coenobium libere natans, sistens rete saccatum, oblongum, undique clausum, e cellulis per extremitates ternatim (rarius quaternatim, rarissimi binatim) coniunctis compositum (Braun), coenobium freely floating, exhibiting a saccate, oblong, network closed in every part, composed of cells throughout to the extremites, bound together in threes (more rarely in fours, extremely rarely in twos).

- diameter cellularum transversalis in eremobiis et binatim conjunctis longitudinalem paullo superans, in cellulis tetradum altera alteram aequans (Braun), the transverse diameter of the cells in eremobia [i.e. solitary-living species], and [those] joined in pairs, somewhat overtopping the length, in the cells of the triad the one equalling the other.