obconic 



Obturator 



obcon'ic, obcon'ical, obcon'icus 

 {conns, a cone), conical, but attach- 

 ed at the narrower end ; obcor'- 

 date, obcorda'tus (+ coudatus), 

 inversely heart-shaped, the notch 

 being apical ; obcor'diform, ohcor- 

 diform'is, are synonyms ; obcrena'- 

 tus (+CRENAfiJs) J, denticulate; 

 obcur'rens {cnn-ens, running X run- 

 ning together and adhering at the 

 point ol" contact ; obdiploste'mo- 

 nous, -vs {dnrx6os, double ; (XTii/jioov, 

 a thread), where the stamens are 

 double the number of the petals to 

 which the outer series are opposite ; 

 Obdiploste'mony, the condition it- 

 self ; Ob'forms, in Ilosa those forms 

 with very glandular teeth and glands 

 on margins of calyx (Almquist). 

 Ob'ices (pi. of obc.v, a barrier), Cle- 

 ments's term for hindrances to plant 

 distribution ; they may be bio- 

 log'ical '~, as constitution of the 

 plants, or phys'ical ~, as the 

 shutting in, as liy mountains. 

 obim'bricate, ohimhricn'tvs {ob, inverse, 

 + iMBKR'ATUs), when the imbri- 

 cation is from above, downward ; 

 oblan'ceolate, ohlanceola'tus ( + 

 LANCEOLATTs), strictly speaking 

 this cannot occur, but the word is 

 used for tapering towards the base 

 more than towards theai>ex ; ob'late 

 {lotus, broad), flattened at the poles, 

 as an orange, 

 ob'ligate {obligafus, obliged), neces- 

 sary, essential ; the reverse of fa- 

 cultative ; ~ Gam'ete, a gamete 

 wliich is incapable of further de- 

 velopment without union with 

 another gamete ; ^ Par'asite, an 

 organism in ' which parasitism is 

 imperative in order to attain com- 

 plete development ; ob'ligative, 

 obligatory, as in obligate ; '-- 

 Sym'biont, an organism which is 

 dependent upon another for its 

 existence. 

 oblig'ulate, obliguJa'tus {ob, inverse, 

 -\- Li(;ULATE),used of ligulate florets 

 of Compositae extended on the 

 inner side of the capitulum instead 

 of the outside ; obliguliflor'ous {fos, 



Jloris, a flower), florets wliich are 

 obligulate, as in Zoegea. 

 oblique', ohli'quus (Lat., slanting), 

 (1) slanting; (2) of unequal sides. 

 oblit'erated {obliteratus, erased), sup- 

 })res3ed ; Oblitera'tion, suppression, 

 ob'long, oblon'gus (Lat., rather long), 

 much longer than broad, with 

 nearly parallel sides. 

 obo'val, obova'lis {oh, inverse, -{■ 

 ovALls), reversed ovate, the distal 

 end the broader ; obo'vate, obova/- 

 tus, practically the same as the 

 last ; obo'void (elSoj, like), an obo- 

 vate solid ; obrin'gens (-f RiN- 

 OENs), X a ringent floret of the 

 Compositae, with an anterior lip 

 one-fifth, and the posterior lip four- 

 fifths of the whole, as though the 

 lower lip were uppermost ; obro- 

 lun'dus (+ noTUNDUs), J somewhat 

 round, 

 obscure', obscn'nis (Lat., dark), (1) 

 dark or dingy in tint ; (2) uncer- 

 tain in affinity or distinctiveness ; 

 (3) liidden. 

 ob'solete, ob.^ole'tus (Lat., worn out), 

 wanting or r\idimentary ; used of 

 an organ wliich is scarcely apparent 

 or has vanished ; obsoles'cent ( + 

 E.scENs\ nearly obsolete. 

 obstruc'tus (Lat., blocked up), where 

 hairs or other appendages partially 

 close the throat of a tubular corolla, 

 obsubula'tus {ob, inverse, + subula- 

 Tus), very narrow, pointed at the 

 base and widening a little towards 

 the apex ; obsutura'lis {sutura, a 

 seam), J applied to the suture of a 

 pericarp ; septifragal. 

 obtec'tus (Lat.), covered over by 

 something ; obtec'to-veno'sus, when 

 the principal and longest veins are 

 connected only by simple cross- 

 veins; ob'tegens (Lat.), covering over. 

 Obtura'tor {obiurakis, stopped up), (1) 

 a small body accompanying the 

 pollen-masses of Orchids and Ascle- 

 piads, closing the opening of the 

 anther; (2) = Caruncle (J. D. 

 Hooker), (3) a process of the wall 

 of the ovary descending on the 

 micropyle, in riumhago. 



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