univalved 



utriform 



those Phanerogams which possess 

 only one covering to their ovules ; 

 u'nivalved, unival'vis, unival'vular 

 (valva, a door-leaf), of one valve or 

 piece, dehiscing by one valve. 



univer'sal, universa'lis (Lat., pertain- 

 ing to the whole), general, as ~ 

 Involu'cre, a general involucre ; ~ 

 Um'bel, a general or compound 

 umbel. 



univesicula'ris (uni = one + VESICU- 

 LAR) = UNICELLULAR. 



unionized ( = not, + !ON), when the 

 molecules are undivided (J. F. 

 Clark) ; Unli'ning ( + line), the 

 separation of parts originally 

 united ; chorisis ; adj. unlined 

 (Lindley) ; unorganised ( + OR- 

 GAN), without structure or organs ; 

 ~ Fer'ment = ENZYME ; unsep'tate 

 + SEPTATE), applied to a plant 

 which has not partitioning divi- 

 sions, as plasmodia or certain uni- 

 cellular Fungi and Algae ; ~ 

 Fi'bres, libriform cells ; unstrat'i- 

 fied (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 Uo'volo (Ital.), gnaurs 

 of the olive-trees, used for pro- 

 pagation. 



ur'ceolar, ur'ceolate, urceola'tus 

 (urceolaris, 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 Carex, 

 the utricle ; (3) any flask-shaped 

 anomalous organ. 



Uredino'sis (Uredo, a blight, from 

 uro, I burn), disease produced by 

 "Rust" Fungi; Ure'do, a form 

 genus, the hymenium producing 

 uredospores exclusively ; adj. 

 uredin'ial, uredin'eous, ure'dinous ; 

 Ure'do-conid'ium ( + CONIDIUM) = 

 UREDOSPORE ; Ure'do-fruit, a 

 group of Uredospores ; Uredo- 

 gonid'ium ( + GONIDIUM) = UREDO- 

 SPORE ; Ure'dospore (a-rropa, a seed), 



a spore formed by acrogenous ab- 

 junction from a sterigma, germin- 

 ating immediately and producing 

 a mycelium which bears other 

 uredospores alone, or with teleuto- 

 spores ; uredosporif erous (fero, I 

 bear), bearing uredospores; Ure'do- 

 stage, the summer stage of Uredi- 

 neae, when uredospores only are 

 produced, 

 u'rens (Lat., burning), stinging, as 



nettles. 



Urn, Ur'na (Lat., a water-pot), (1) 

 the capsule of a Moss ; (2) the 

 base of a pyxidium ; urn-shaped, 

 urceolate. 



urtica'ceous (urtif,a,a nettle, + aceous), 

 pertaining to the order Urticaceae, 

 of which the nettle is the type, 

 usta'lis (Mod. Lat., from ustus, 

 burnt), charred, brownish black ; 

 Ust'erophyte (<pvrov, a plant), 

 Berkeley's name for one of the 

 Ustilagineous Fungi ; ustula'tus 

 (Lat.), scorched, with the appear- 

 ance of being charred ; Ustilagin- 

 o'sis, disease caused by UstHayo, 

 a genus of Fungi which produces 

 "Smut" in corn, the contents of 

 each cariopsis being replaced by a 

 black powdery mass of spores ; 

 ustilag'inous, like Ustilago, or 

 allied to it ; us'tulate, ustula'tus, 

 blackened, as though burned. 

 U'terus (Lat., the womb), the volva, 



or receptacle of the Phalloideae. 

 U'tricle, Utric'ulus (Lat., a small 

 skin, or husk), (1) a small bladdery 

 pericarp as in Atriplex ; (2) a 

 membranous sac surrounding the 

 fruit proper in Carex ; (3) any 

 bladder-shaped appendage ; (4) a 

 synonym of a parenchymatous cell ; 

 Utric'uli semina'les, the spores 

 of certain Fungi (Lindley) ; utri- 

 c'ular, utricula'ris, utric'ulate, 

 utricula'tus, utric'uliform, utriculi- 

 form'iK (forma, shape), utric'ulose, 

 utriculo'sus, having bladders, or 

 bladder-like in appearance, in- 

 flated. 



u'trifonn, utriform'is (uter, a skin 

 bottle, forma, shape), bag-shaped 



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