Repium 
(SUPPLEMENT) 
Salicornetum 
four bands corresponding to the 
four orthostichies of leaves, in 
Psaronius (Scott). 
Rep‘ium [? Rhep'ium] (férw, I sink), 
succession of plants on soils which 
have subsided (Clements). 
replicate, employed by writers on 
Asclepiads, in the sense of RE- 
DUPLICATE. 
rest'ing Spor’ange, in Saprolegnia 
occasionally formed on old mycelia, 
their contents being zoospores; ~ 
Swarm-Cell, naked masses of pro- 
toplasm with amoeboid motion, in 
Confervaceae. 
Resolu'tion (resolutio, an untying), the 
division of a coenocyte into uni- 
nucleate cells (Hartog). 
retina’culate, possessing ReEtINA- 
CULA. 
Tetrogres’sive, cf. REGRESSIVE. 
Rever’sion Shoots, shoots exhibiting 
the young or larval form of foliage. 
rhabdocar’pous (xaprés, fruit), long- 
fruited ; fruits shaped like a rod. 
rheotac’tic, adj. of Rheotax’is (rdéis, 
order), a synonym of RHEOTROP- 
ISM. 
Rhizinophyl’la or Rhizophyl’la, pl. 
(gvArov, a leaf), the postical bracts 
of Hepaticae, which bear the 
rhizoids (Spruce). 
Rhi’zocorm (+ Corm), J. Smith’s 
term for the fleshy rhizomes of Iris, 
Acorus, ete, ; rhizoi’dal Cell, a 
small cell in the antheridium of 
Isoétes (Belajeff); rhizoph’orous 
(gopéw, I bear), giving rise to 
roots ; Rhizophyte (¢urdv, a plant), 
Van Tieghem’s term for Vasculares. 
rhizop’odous (7rovs, odes, a foot), used 
in the sense of amoeboid. 
Rhodophyta (durdv, a plant), the red 
Algae (Wettstein) ; Rhodoplas’tid, 
the chromatophore of Rhodophy- 
ceae (Darbishire). 
Rho’lum (fos, a stream), ‘“‘a creek 
formation” ; rhooph’ilus (giAéw, I 
love), creek dwelling ; Rhoophy’ta 
(purdév, a plant), creek plants 
(Clements). 
Rhya’cium (/vaé, a torrent), a torrent 
formation ; rbyacoph’ilus (¢:\éw, I 
354 
love), torrent-loving ; Rhyacophy’ta 
(gurov, a plant), torrent plants 
(Clements). 
Rhys‘ium, or Rhys‘ion (vats, a flow- 
ing), a plant succession on volcanic 
soil (Clements). 
riv’ulose, (2) marked with lines like 
a rivulet (Stevenson). 
robori‘nus (Mod. Lat., from Robur, 
Roboris, oak), the grey of last 
year’s oak twigs (Hayne). 
Root’stalk, the primary unbranched 
root in a young plant. 
Root’let, (3) appendages of Stigmaria 
in quincuncial order on its surface, 
rosa’cean, used by batologists to in- 
dicate an affinity or likeness to 
Rubus rosaceus. 
rubia’ceous, belonging to Rubiaceae, 
Ru'derals, plants growing on rubbish 
heaps or waste lands (Thornber). 
Run‘ner-bulb, a bulb formed by a 
stolon, as distinct from one formed 
direct from the main axis; Run’- 
ners, (2) in Fungi; mycelial stolons, 
as in Rhizopus. 
ruta’ceous, having affinity with the 
Rutaceae. 
sac’cal (saccus, a bag), relating to a 
sac, as the Empryo-sac: §Sac’co- 
spores, -ae (+ Spore), Clements’s 
term for plants having fruit en- 
veloped by a membrane. 
Saccharifica’tion, the conversion of 
starch into sugar. 
Saccharophyl’ly (¢vAdov, a leaf), the 
production of “ Sugar” leaves, of. 
AMYLOPHYLLY. 
sagit’tal (Sagitta, an arrow), applied 
to a section; the median line in 
plane of division of bilateral sym- 
metry; introduced into botany 
from zoology. 
Salice’tum, (1) a collection of willows; 
(2) a volume so entitled devoted 
to the genus ; (3) recently applied 
to a plant association of Salix; 
Salicol’ogist, an expert or student 
of the genus Salix; or of willow- 
barks only, 
Salicorne’‘tum, Ganong’s term for a 
plant association consisting of 
Salicorma ; a salt marsh, 
