tmilateral 



Urceolus 



eiilieTunilatera'lis {lotus, a side), one- 

 sided, either originating or , usually , all 

 turned to one side ; uniloc'ular {locu- 

 lu^,.a, small compartment), one-celled ; 

 aniner'yiate, uninerviaHus, uniner'- 

 vis, xminer'vius {nervus, a nerve), one- 

 veined or ribbed ; unino'dal {7wdus, 

 a knot), having a single node. 



nninterrap'ted, continuous. 



uninu'clear, aninu'cleate, uninu'cle- 

 ated, uninvclea' Lus {iini = one, + 

 Nucleus), having a single nucleus ; 

 nniocula'tns {oculatiis, furnished 

 with eyes), having only one vegetat- 

 -ing point. 



U'nion {unio, oneness) of gametes, gene- 

 rally termed Fektilization. 



ani'oiiized (un = not, -\- Ion), when 

 the molecules are undivided (J. F. 

 Clark). 



uniov'ulate {wti = one, + Ovule), 

 with a solitary ovule ; a'nipared = 

 unip'arous [pario, I bring forth), 

 bearing one, as a cyme giving forth 

 one axis at each branching ; uni- 

 pet'alous (-f Petalum), (1) having 

 a corolla of only one petal, the 

 others not being developed ; (2) 

 erroneously \ised for gamopetalous ; 

 unipo'lar ( + polar), with only one 

 pole ; uniprophylla'tus ( -f Pro- 

 phylla), with only one prophyllum 

 (Buchenau) ; nnisep'tate ( -f- sep- 

 tate), having only one septum, as 

 in most teleutospores ; unise'rial, 

 uniseria'liSj anise 'riate, uniseria'iics 

 {series, a row), in one horizontal row 

 or series) ; unisez'ual, uniscxua'lis, 

 unisex'us {sexus, sex), (1) of one sex ; 

 stamens or pistils only, or their re- 

 presentatives ; (2) in hybrids, when 

 the characters of one parent only 

 are reproduced ; -- Heredity, the 

 property of transmitting the quali- 

 ties of one parent only (Macfarlane) ; 

 ani80''roaB ( -f Sorus), consisting of 

 one sorus ; unistra'tose {stratum, a 

 layer), of one layer of cells. 



U'nit {uniltis, joined), the male synan- 

 gium or anther of Gnetaceae ; -^ 

 Char'acters, or '- Fac'torg, definite 

 factors in the gamete which in he- 

 redity behave as indivisible entities. 



Unitegmina'tae (uni = one, tegnien, a 

 covering), Van Tieghem's term for 

 those Phanerogams which possess 

 only one covering to their ovules ; 

 uniteg'minous, having one coat to 

 the ovule ; Uniteg'miny, the state 

 itself; nnityp'ic {tvttos, a type) = 

 MONOTYPic ; univ'alent {valens, 

 strong), applied to chromosomes of 

 simple character ; a pair may con- 

 tract and thus form a bivalent 

 chromosome ; u'nivalved, u'nivalvis, 

 univalv'nlar {valva, a door-leaf), of 

 one valve or piece, dehiscing by one 

 valve. 



univer'sal, universa'lis (I.at. , pertain- 

 ing to the whole), general, as --' 

 Involn'cre, a general involucre ; '» 

 TJm'bel, a general or compound 

 umbel. 



univert'ed {uni, one ; verto, I turn), 

 0. Miiller's term for mirror-like 

 symmetry ; univesicula'ris ( -f- 

 vesiculak) = unicellular ; univ'- 

 orons {voro, 1 devour), used of a 

 Fungus restricted to a single host ; 

 monophagous (Salmon). 



Unli'ning {un = not, + line), the 

 separation of parts originally united ; 

 chorisis ; adj. unlined' (Lindley) ; 

 unor'ganized (-f Organ), without 

 structure or organs ; -^ Fer'ment = 

 Enzyme ; unsep'tate -f septate), 

 applied to a plant which has not 

 partitioning divisions, as plasmodia 

 or certain unicellular Fungi and 

 Algae ; ^ Fi'bres, libritorm cella ; 

 nnstrat'ifled {stratum, a layer), used 

 of those Lichens which do not show- 

 distinct layers of hyphae and 

 gonidia ; unsymmet'rical ( -+- Sym- 

 metry), irregular. 



Uo'voli, pi. of TJovolo (Ital.), gnaurs of 

 the olive-trees, used for propagation. 



ur'ceolar, ur'ceolate, urceola'ius {urceo- 

 laris, relating to pitchers), pitcher- 

 like, hollow and contracted at the 

 mouth like an urn or pitcher ; 

 Ur'ceolus (Lat.), (1) a pitcher- 

 shaped organ, as an ascidium ; (2) 

 the two confluent bracts of Carcx, 

 the utricle ; (3) any flask-shaped 

 anomalous organ. 



399 



