Notes on the Occurrence of Multinucleate Cells 
BY 
T. L. PRANKERD, 
Demonstrator in Botany , Bedford College , University of London, 
With eight Figures in the Texto 
T HE vegetable cell is generally considered uninucleate. Exceptions to 
this rule are known either in the case of cells of unusual size, 
e. g. latex tubules and some algal cells, or cells of very special function, 
such as embryo sacs, pollen tubes, some jacket (4) and tapetal cells (3); and 
to these must be added certain cases of multinucleate cells occurring in 
individual plants, i. e. those recorded by Beer for grasses (2), Arber and 
McLean for several aquatics, (1) and (6). The purpose of the present com¬ 
munication is to record the occurrence of more than one nucleus, not 
in highly specialized cells, or those of a particular group of plants, but 
in different tissues of various immature vegetative organs. The details are 
given in the following table, which also shows that the plants studied are 
widely separated in habit, habitat, and systematic position : 
Plant. 
Pteridium aquilinum 
Marattia sp . 
Ophioglossum vulgatum . 
Potamogeton crispns . . 
Sagittaria sagittifolia 
Sagittaria lancifolia . . 
Hydrocharis Morsus-ranae 
Avena sativa .... 
Zizania aquatica . . . 
Arum maculatum 
Calla palustris . . 
Orontium aquaticum . 
Carpinus Betulus . . 
Ostrya vulgaris . . . 
Corylus Avellana . . 
Fagus sylvatica . . 
Morus nigra . . . 
Polygonum aviculare 
„ Persicaria 
,, amphibium 
orientale . 
Organ. 
petiole 
? 3 
sporangiophore 
vegetative branch 
petiole 
petiole 
bud 
coleoptile 
coleoptile 
mesocotyl 
plumular leaves 
petiole 
3 3 
inflorescence axis 
hypocotyl 
V 
bud 
inflorescence axis 
33 
f ” 
vegetative stem 
(petiole 
cotyledonary node 
Tissue. 
ground tissue 
cortex 
ground tissue 
ground tissue 
cortex and epidermis 
ground tissue 
y y 
>3 
mesophyll 
ground tissue 
33 
5? 
pith and cortex 
3 ? 
cortex 
pith 
[Annals of Botany, Vol. XXIX. No. CXVI. October, 1915.] 
