araliaceous 
Archoplasm 
spider, or spider’s web, efdos, re- 
semblance), like a cobweb, from 
an entanglement of fine whitish 
hairs. 
aralia’ceous, resembling the genus 
Aralia, or the order of which it is 
the type. 
ara’neous {, araneo’sus t, ara’neose 
(aranea, a spider), have the same 
meaning as arachnoid. 
Ar’bor (Lat. tree), a woody perennial 
plant, having a bole from which 
the branches spring ; arbores’cent, 
arbores’cens (+ escens), attaining 
the size or character of a tree; 
Ar’boret, a small tree or shrub; 
Arbore’tum, a place assigned for 
the culture of trees, usually in 
systematic order ; also the title of 
a book devoted to trees ; arbor’eous 
arbor’eus, tree-like ; arboric’oline, 
arboric’olous (+suffix -cola, in- 
habitant), dwelling on trees, as 
the habitat of Fungi or epiphytes ; 
ar’boroid (eléos, resemblance), a 
hybrid word for dendroid, tree- 
like. 
Arbus’cula (Lat.), a small shrub with 
the aspect of a tree, as some heaths ; 
Ar’busele is an old term for the 
same; Arbus’culus (Lat.), a small 
tree; arbus’cular, arbuscula’'ris, 
shrubby, and branched like a tree. 
arbus'tive, arbusti'vus (Lat. planted 
with trees), coppiced. 
Arbus’‘tum (Lat.), (1) a shrub, 
a branched woody perennial plant, 
but wanting a distinct bole; (2) 
applied to an account of the woody 
plants of a country, a Sylva. 
Arces'thide, Arces’thida (dpxev6ls, -l50s, 
juniper berry) = GaLBuLus. 
archa'ic (dpxaixds, antiquated), used 
with reference to a type of a former 
age, as Casuarina. 
Archebio’sis (dpxy, beginning; los, 
life), origin of life; Arch’egone= 
ARCHEGONIUM ; archego’nial (yor), 
race), applied by Tschirch to 
stomata, whose outer walls of the 
guard cells are thickened, inner 
walls only a thin lamella, the 
guard cells separated in their 
22 
central part but not at the poles, 
as in Gymnosperms ; archego’niate, 
possessing archegonia;  Arche- 
gonia’tae, plants producing arche- 
gonia, applied to Bryophytes and 
Pteridophytes ; Archego’niophore 
(popéw, I bear), the supports of 
archegonia in certain ferns, out- 
growths of the prothalli, also 
specialised branches on Sphagnum 
with the same function; Archego’- 
nium, the female sexual organ 
in Cryptogams, containing the 
oosphere, which after fertilization 
develops within the venter; 
Archene’ma (vjjua, a thread), term 
proposed by Macmillan for 
gametophytic structures in Thallo- 
phytes ; Arch’espore, Archespor’ium 
(omopa, a seed), the cell or cells 
from which the spores are ultim- 
ately derived as in the pollen sac, 
or its homologue; archespor’ial, 
belonging to the same ;~ Cells, the 
first eight cells in spore-formation 
~ Pad, Bower’s term for a mass of 
cells developing beneath the sporo- 
genous tissue in certain Pteridophy- 
tes; Arch’etype (rios, a type), an 
original simple type; restricted to 
a series of forms from the simplest 
to complicated, with common type 
of structure and phylogenetic con- 
nections ; Arch’icarp (xaprés, fruit) 
in ascomycetous Fungi, the begin- 
ning of a fructification, the cell or 
group of cells fertilized by a sexual 
act; Archichlamyd’eae (Aas, 
-vdos, a mantle), a term to include 
the Polypetalae and Incompletae 
of Phanerogams. 
arch’ing, curved like a bow. 
Arch’isperm (dpx, beginning ; crépua, 
seed), (1) another name for Gymno- 
sperm, from their presumed an- 
tiquity; (2) Boulger’s term for 
structures formed before fertiliza- 
tion, or at an early stage in 
the macrospore; Archistrep’tes 
(orpenros, twisted), the principal 
spirals formed in phyllotaxis. 
Arch’oplasm (dpxés, chief ; Thao Ua, 
moulded), Boveri’s term for K1no- 
