Layenng 



Lipins 



sowing on a large scale(!); this 

 i3 opposed to tlie accepted meaning 

 of the word. 



leached [monosyll.], soil washed of 

 its plant-nutriment. 



Leaf, Branch, of Sphagnum, cf. 

 Branch-leaf ; r^ Gaps, cf. Foliar 

 Gaps ; Up'per ~, Bower's equiva- 

 lent for Eichler's " Oberblatt." 



Leaf-skin Theory ; the superficial 

 layers of the shoot formed by 

 downward growth of leaf rudiments 

 (Saunders). 



Lec'ithin, see under Lipins. 



leimic'olous (Aei^oiv, a meadow), 

 inhabiting moist grass-land. 



leiotrop'iC (Aetos-, smooth ; rpoTrq, 

 turning), the direction of spiral 

 cleavages. 



Lemne'tum, an association of Lemna 

 Linn. 



len'diger [lens, lentis, a nit), applied 

 to such inflorescences as of Gas- 

 tridiiim lendigerum Gaud. 



lenit'ic [hnis, smooth), used of *' still- 

 water societies " (Needham and 

 Lloyd). 



lepidoden'drid, Jeffrey's variant for 



LEPIDODENDROID fossils. 



Lep'idophyte (AemV, Aem'So?, a scale ; 

 ^vTov, a plant), occasionally used 

 to denote a petrified fossil plant. 



Lep'idotes (Aem?, a scale), scale-like 

 structures on the shoots of Tilland- 

 sia Linn. ; Lepid'ium, employed by 

 Parlatore for the ovuliferous lamina 

 in Coniferae. 



leptocle'ma {KXrjua, a twig), slender 

 branched ; Lep'tophyll {<f>vXXov, a 

 leaf), Raunkiaer's term for his 

 smallest leaf catalogued. 



Leptomia'sis, a flagellate disease 

 chiefly attacking Euphorbiaceae. 



Lep'to-zygone'ma {-f Zygonema), 

 the transition of the meiotic nucleus 

 between the leptonene and zygotene 

 stages by parallel fusion of thin 

 threads. 



Lep'to-zygo'tene (+ Zygotene), 



applied to a nucleus containing 

 a Zygonema. 



le'thal, add, (2) Fac'tor, applied to a 

 mutation ending fatally ; ~ 



Gam'ete, ~ Zy'gote, each being 

 fatal to a normal blend. 

 Leucoder'mis, a " variegated periclinal 

 chimaera," with white markings 

 through the green epidermis of 

 Arahis Linn., and Auhrietia Adans. 

 (Correns) ; Leuc'osin, a substance 

 in algae of unknown composition, 

 the result of photosynthesis 

 (Fritch). 

 Licop'oli Glands = Chalk-glands. 

 Life-forms, living forms of the present 



day (Clements). 

 Lig'ule, add to (6), sealing growth 

 in cones between the angles of the 

 primary scales in Dammara Lam. 

 (Church). 

 Lime-cell, a hard shell round the 

 oospore, due to a secretion of lime 

 in the spirals of the oogonium in 

 Charads. 

 limnic'olous (AiVv??, a pool), lake- 

 dwelling ; Lim'naen, submersed 

 plants forming associations (Riibel). 

 Limni'um, submersed wet meadows 

 (Diels). 

 Li'mosphere (Ai/xos-, famine ; ckpalpa, 

 a globe), a hollow sphere enclosing 

 a vacuole in the spermatid of a 

 bryophyte (Farmer). 

 Limosequise'tum, an association of 



Equisetam limosum Linn, 

 lind'sayoid, like Lindsaya Dryand. 



(Bower). 

 Link'age, a later term for Coupling ; 

 linked' characters are found in 

 cross-breeding ; the tendency of 

 factors to stay together, opposed 

 to crossing over (Lotsy). 

 Linne'on (Linn6 ; ovra, things existing), 

 " the group of individuals which 

 resemble one another more than 

 they do any others " (Lotsy) ; a 

 Linnean, or superspecies. 

 lipal'ian (ActVa, left; aXs, the sea), 

 an era of marine deposit, when 

 pelagic life was adapted to littoral 

 conditions, and the appearance of 

 the species of the Lower Cambrian 

 formation (Walcott). 

 Lip'ins, fatty acids in combination, 

 divisible into (a) Creb'rosides, with 

 nitrogen and sugar, and (6) Phos'- 



447 



