Homotype 



Hortui 



type, in which the reduced number 

 of chromosomes are retained up to 

 the formation of gametes (Farmer) ; 

 (3) organs sliowing no trace of dif- 

 ferentiation between one and another 

 in function (K. Pearson) ; adj. homoty- 

 p'ic, homologous ; Homotypo'sis, the 

 principle of the likeness and diversity 

 o^ homotypes (K. Pearson) ; Homo- 

 f ypy,the condition of correspondence 

 of parts which are in series ; Homo- 

 2?g-oc'ity, Homozygo'sis, the con- 

 dition of producing horaozygotes; 

 Homozy'gote (+ Zygote), a zygote 

 produced by the union of gametes 

 liaving similar allelomorplis (Bate- 

 son). 



Hon'ey, the sweet secretion from glands 

 or nectaries, which acts as an induce- 

 ment to insect visitors ; -^ Cup, used 

 by "Withering for nectary ; ~ Bew, ^ 

 sweet secretion voided hy aphides 

 from the juices of their host plants ; 

 ~ Guides, lines or streaks of honey 

 or colour leading to the nectary ; 

 '-' -leaves, nectaries such as those of 

 ^^«?7(f(7/a (Potter) ; '^ Pore, a sup- 

 posed pore or gland wliieh secretes 

 honey; ~ Spot= -Ouides; Hon'ey- 

 comb-cells, in Diatoms, hexagonal 

 hollows, as in Triceratium Favus, 

 Elircnb. ; hon'eycombed, alveolate. 



Hood, = Cucui.Lu.s ; hood'ed, Hood- 

 shaped (Crozier) = cuculj.ate. 



Hook, a slender process, curved or bent 

 back at the tip ; ^ Cli'mbers, plants 

 which support themselves by hooks 

 or prickles, as the bramble ; hooked- 

 back, curved in a diiectiou from the 

 apex to the base as the side lobes in 

 a dandelion leaf. 



Hoop, the zone or girdle of Diatoms, 

 the connection between the valves of 

 the fnistule. 



Hop meal = Lupulin. 



hora'rius, hor'ary {hora, an houi), 

 lasting an hour or two, as the ex- 

 panded petals of Cistus. 



hordea'ceus (Lat. pertaining to barley), 

 shaped like an ear of barley ; 

 Hor'dein, a special proteid occur- 

 ring in barley, Hordeum vulgarc, 

 Linn. 



horizon'tal, horizontalis {SpiCotv, the 

 circular boundary of vision), level ; 

 Horiaon'tal Sys'tem, the cellular, aa 

 distinguished from the fibro- vascular 

 system (Crozier). 



Hor'mogon (Crozier) = Hormogone, 

 Hormogon'iuin {Sp/ios, necklace; 

 y6i>os, offspring), in filamentous Algae, 

 those portions composed of pseudo- 

 cysts marked off by heterocyste 'vhich 

 become detached, and after a short 

 period of spontaneous motion, come 

 to rest and develop into new fila- 

 ments ; Hormogonim'imn (-f Goni- 

 mium), gonimia arranged in necklace 

 fashion ; Hor'mosporos (airopa., seed), 

 a term used by Minks for spores 

 which <are similar in origin to stylo- 

 or teleuto-sporea of Fungi, colourless, 

 dividing into cells, raicrogonidia, 

 etc., with deliquescence of the 

 mother-cell, the microgonidia de- 

 veloping into heterocysts. 



Horn (1) any appendage shaped like 

 an annual's horn, as the spur in 

 Linaria ; (2) the antheridium of 

 VaiLcheria ; Hom'let, (1) the male 

 organ of Vaueheria, a papilla or 

 projection from the filament (Cooke); 

 (2) a little horn (Crozier); hor'ny, 

 corneoMS as to texture. 



Horn'bast (Ger.), a tissue of obliterated 

 groups of sieve-tubes, specially 

 thickened and of horny texture 

 (VVigand). 



homot'inus, hor'nus (Lat.), of this 

 year, the present year's growtl, ; 

 Ra'mi hor'ni^ branches not a twelve- 

 month old. 



horologlcal (horologiciis, pertaining 

 to a clock), said of flowers which 

 open and close at stated hours ; 

 Horolo'giam Flo'rae, a time-table of 

 the opening and closing of certain 

 flowers : — see Linnaeus, Phil. Hot. 

 274 ; Kerner, Nat. Hist. Plants, ii. 

 215-218. 



horten^'sis (Lat. ), pertaining to gardens, 

 or only found there ; Hortula'nim 

 (Lat.), (1) a gardener; (2) belonging 

 to a garden ; Hort'ns (Lat.), a gar- 

 den; '~ sic'eas, an herbarium; 

 formerly it consisted of volumes 



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