AS 



NeSvA'tion. — Leaves are rilbre or less 

 marked by veins/ which, starting from 

 the stalk, diverge or branch as the 

 blade widens, arid spread all over it, 

 more or less visibly. The principal 

 ones, when prominent, are often oallfed 

 ribs or nerves, the smaller branclfes 

 only then retaining the nanle of veins, 

 or the latter are termed veinlets. The 

 smaller veins are Often connected 

 together, likfe the meshes of a net ; they 

 ^re then said to anastomose, and the 

 leaf is said to be reticulate or net- 

 veined. When 6ne principal vein runs 

 direct ftom the stalk towairds tbd sum- 

 mit of the leaf it i3 balled the midrib. 

 When several start from the stalkj 

 diverge slightly without branching, and 

 converge again towards the summit, 

 they ate said to be parallel, although 

 not mathematically so. Wbeii 8 or 5 

 or more ribs or nerves diverge from the 

 baSe, the leaf is said to be 3-iierved, 

 5-nerved, &c: ; but if the lateral •nes 

 diverge from the midrib a little above 

 the base, the leaf is triplinerved, quin- 

 tupliner^ed, &o. 



Nekva'tCS, NeBW'bub — Having nerves ; 

 also when nerves are very prominently 

 developed. Nekvulo'sus — Diminutive 

 of "Nervosus." (See inflorescence of 

 Dcedalacanthua nervosus, a shrub in 

 most gardens. ) 



Neur'a — A nerve. Netjbo'sus — Synonym 

 for "Nervosus." 



Nbo'ter — When boih stamens and pistil are 

 imperfect or wanting. 



NiDTJLA'Tns— Nestling. Nid'ulans — Im- 

 bedded in pulp, partially encased in 

 some covering. (See species of Oyathus, 

 Bird's-uest Pungiis, whiteh inay often be 

 inet with on dungs. ) 



Ni'GEE — Black ; very dark grey, but not 

 pure black. Nie'mcANS — Blackish, as 

 the Black Pepper, Piper nigrum. 



Nl^lDUS— Bright. Synonym for ' ' Lucens. " 

 ^See the glossy Ifeaves of Gelsentium 

 mtiduTk. ) 



NlvA'tis, Nivo'snS — Snowy; living amongst 

 stjow, or in snowy regions. Sometimes 

 used as a synonym for "Niveus," snowy 

 white. 



Nootce'nal, NocTua'Nns— Of the night, 

 lasting through a night, as many 

 flowers. Example: Ipomcea bona-nox, 

 or common Sloon flbWer. 



Node — A point of the stem tjr its branches 

 at which one or more leaves, branches. 

 Tor leaf-btids are given off. An Inter- 

 node is the portion of the stem com- 

 prised between two nodes. 



NoDO'STTS — Knotty. Also synonymous with 

 ''Monilifornl."NoDtJLOSE',NoDnLo'sns 

 — Furnished with little knots. (See 

 one of the tea-trees about Brisbane, 

 Melaleuca nodosa, which bears its 

 flowers and fruits in knot-like masses. ) 



NOSOL'OGt dr Pathol'ogSy — That part of 

 botany which treats of the diseases of 

 plants. 



NoTA'lts — Marked by Spots or lines. 



NoTORHi'ZA — Synonym for " Incum- 

 bens," when applied to the embryo of 

 Cruciferae. 



NoviB-HoLLANDiiE — Belonging to Nev* 

 Holland (Australia), as the Clim^hg 

 Nettle, Tragia Novce-Hollandice. 



NnoAMENTA'OBODS, Nuoamenta'ceus — Re- 

 sembling a small nut. Synonym for 

 " Indehisoent," when applied to certain 

 seed-vessels, as the siliquae of some 

 Cruciferae. Nucamentum— A catkin ; 

 synonym for "Amentum." NucbilA 

 — Diminutive, from " Nux," a nut ; 

 syhonym for "Nucleus." Nhcifor'mis 

 — Nearly spheroidal, but tapering at 

 one end — i.e., shaped like a filbert. 

 Nucule, Nuoula— A small nut; 

 sjmonym for "Glans." Also one or 

 two forms of apothecia peculiar to 

 Oharaoese. 



NucLEA'Hins~The part of a seed developed 

 within the nucleus — viz., the embryo 

 and albumen together. NtrcLEons, 

 Nu'CLBUS (a kernel)— The inner, pulpy, 

 and closed sack of the ovule, within 

 which the embryo and its immediate 

 covering are deve'.oped. * 



Nucdla'nidm: (From nucula,.Si, small nut, 

 because it contains hard seeds) — ^A two 

 or more celled indehiscent fruit, formed 

 from a superior ovule filled with fie^h^ 

 pulp, containing few or several seeds. 

 The grape ( FiWs) and our Scrub Crab 

 (Sideroxylon) fruit are examples. 



Nu'dus — Naked, as NudicaulIs. When a 

 stem has no leaves, the word is used to 

 imply that a plant or organ is free from 

 hairs, down, &c. (See Jasminum 

 mtdijlontm.) 



NuLLiNBK'vis— Synonym for "Eriervis,'' 

 nerveless. 



NuMBEifS — The number of leaves or their 

 parts is expressed adjectively by the fol- 

 lowing numeralsderived from the Latin: 

 — Uni, 1 ; bi, 2 ; tri, 3 ; quadri, 4 ; quin 

 que, 5 ; sex, 6 ; septem, 7 ; octo, fi ; 

 novem, 9; deoehi, lO; multi, md,ny; 

 prefixed to a termination, indicating 

 the particular kind of part referred to. 

 Thus — Multidentate means many- 

 toothed, &c. 



NuMMULA'ElA^-Round, like a piece of coin. 

 (See the leaves of the pretty North 

 Queeiisland epiphyte, Dischidia num.- 

 mularia.) 



Nn'TANS — Nodding. (See the inflorescence 

 of Shell-flower, Alpinia nutans.) 



Ob— A prefix denoting inversion. Thus 

 "obclavate" is the inverse of "olavate," 

 the attachment being at the thicker end. 



Oboompebs'sed — ^Where the compression 

 or flattening is contrary to the more 

 usual condition. Oboor'datb — (See 

 leaflets of the Sour-grass, Oxalis comi- 

 culata.) 



Oboue'bens — Where the partial dissepi- 

 ments in an ovarium extend to the axis; 

 so that the capsules becorne miilti- 

 looular. 



OBiMBRiOA'Tns— Where the imbrication is 

 from above downwards. AlSo used 

 where rows of scales are so arranged 

 that those on one row overtop thoSe of 

 the row immediately abo*e or within 

 them. 



