The Jubulaceae have a leaf whose lobule, usually transformed into a water-sac, is normally very narrowly attached to the stem and to the dorsal lobe; indeed some Frullania taxa reproduce vegetatively by dropping the dorsal lobes, but not the lobules, and Neohattoria has caducous lobules but persistent lobes.
Wikipedia foundation.
Caducous — Ca*du cous, [L. caducus falling, inclined to fall, fr. cadere to fall. See {Cadence}.] (Bot. & Zo[ o]l.) Dropping off or disappearing early, as the calyx of a poppy, or the gills of a tadpole. [1913 Webster] … The Collaborative International Dictionary of English
caducous — index ephemeral, transient Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
caducous — [kə do͞o′kəs, kə dyo͞okəs] adj. [L caducus, falling < cadere, to fall: see CASE1] Bot. falling off early, as some leaves … English World dictionary
caducous — adjective Etymology: Latin caducus tending to fall, transitory, from cadere to fall more at chance Date: 1808 falling off easily or before the usual time used especially of floral organs … New Collegiate Dictionary
caducous — См. caduco … Пятиязычный словарь лингвистических терминов
caducous — readily shed, deciduous, e.g. scales in Clupea which are easily detached … Dictionary of ichthyology
caducous — adj. [L. caducus, falling] Naturally detached or shed; having the tendency to fall off early or before maturity … Dictionary of invertebrate zoology
caducous — /keuh dooh keuhs, dyooh /, adj. 1. Bot. dropping off very early, as leaves. 2. Zool. subject to shedding. 3. transitory; perishable. [1675 85; < L caducus unsteady, perishable, equiv. to cad(ere) to fall + ucus adj. suffix; see OUS] * * * … Universalium
caducous — ca·du·cous (kə dooґkəs) [L. cadere to fall] falling off; deciduous … Medical dictionary
caducous — adj. falling off at an early stage of development (Biology) … English contemporary dictionary
