rough 



Rust 



lius (folium, a leaf), round- 

 leaved. 



rough, (1) scabrous; (2) also of 

 surfaces covered with stiff coarse 

 hairs ; ^ Leaves, a gardener's name 

 for the first true leaves of a 

 seedling ; rough'ish, scabrous. 



rubel'lus (Lat.), reddish. 



rub' ens (Lat.), blush-red. 



rub'eolus (N. Lat.), somewhat red, 

 ruddy. 



rub'er (Lat., red), red in a general 

 sense ; rubes'cent, rubes'cena, 

 turning red. 



rubic'olous (rubiis, a bramble, colo, I 

 inhabit), parasitic on brambles, or 

 attached to them ; Henslow spells 

 it rubico'lus. 



rubicun'dus (Lat., red, ruddy), blush- 

 red. 



rub'idus (Lat.), reddish; rubid'eus 

 (Mod. Lat.), means about the 

 same. 



rubig'inose, rubigino'sus, rubig'inous, 

 rubigin'eus (robiga or rubigo, rust), 

 rust-coloured, usually implying it 

 is due to glandular hairs. 



Ru'bor, Rube'do (Lat.), redness of any 

 kind. 



ru'deral, rudera'lis (from rudus, old 

 rubbish), growing in waste places 

 or among rubbish ; ^ Plants, those 

 which are characteristic of rubbish 

 heaps, etc. 



Ru'diment (rudimentum, a first at- 

 tempt)^!) an imperfectly developed 

 and functionally useless organ, a 

 vestige ; (2) has been suggested as 

 an equivalent of the German term 

 " Anlage " ; cf. INCEPT, PRIM- 

 OKDIUM ; rudimen'tal, rudimen'- 

 tary, arrested in an early stage 

 of development ; ~ Or'gans, those 

 whose development has been 

 arrested at an early stage. 



rufes'cent, rufes'cens (Lat. ), becoming 

 reddish. 



Ruffle, used by Withering for the 

 VOLVA of Fungi ; ruffled, with a 

 strongly waved margin (Crozier). 



rufid'ulus (N. Lat.), somewhat red. 



ru'fous, ru'fus (Lat.), reddish, of all 

 shades. 



Ru'ga, pi. Ru'gae (Lat.), a wrinkle 

 or fold ; ru'gate, wrinkled. 



rug'ged, scabrous (Crozier). 



ru'gose, rugo'sus, ru'gous, covered 

 with, or thrown into wrinkles ; 

 ru'gulose, rugulo'sus, somewhat 

 wrinkled. 



ru'mlnate, rumina'tus (Lat., chewed), 

 looking as though chewed, as the 

 albumen of the nutmeg ; >~ En'- 

 dosperm, mottled in appearance, 

 due to the infolding of a dark 

 inner layer of the seed-coat into 

 the lighter coloured endosperm. 



run'cinate, runcina'tus (runcina, a 

 large saw), saw-toothed or sharply 

 incised, the teeth retrorse. 



Run'dle, used by Withering for 

 UMBEL ; and Run'dlet, for a partial 

 or secondary umbel. 



Run'ner, a stolon, an elongated lateral 

 shoot, rooting at intervals, the 

 intermediate part apt to perish, 

 and thus new individuals arise ; 

 run'ning, repent, reptant. 



rapes' tral (rupes, a rock), H. C. 

 Watson's term for plants of walls 

 and rocks ; rupes'trine (Crozier), 

 rupes'tris, growing among rocks, 

 or as Lichens, on rocks ; some 

 write it rupes' 'ter ; Rupic'ola (colo, 

 I inhabit), a plant which dwells 

 among rocks ; adj. rupic'olous. 



rup'tile rup'tilis (ruptus, broken), 

 dehiscing in an irregular manner ; 

 ruptiner'vis, ruptiner'vius (N. 

 Lat.), when a straight -ribbed leaf 

 has its ribs interrupted and 

 swollen at intervals; rup'turing, 

 bursting irregularly. 



rura'lis (Lat., rustic), growing in 

 peculiarly rural places as the thatch 

 of a cottage. 



rus'ciform (Ruscus, forma, shape), 

 with leaflets recalling the shape of 

 the phyllodes of Ruscus acuLeatus, 

 Linn. 



rus'sus (Lat.), red; russet, when 

 meaning reddish-brown. 



Rust, a fungous disease in cereals 

 caused by Puccinia graminis, Pers. ; 

 it is also applied to other diseases 

 of plants from similar attacks; 



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