14 ENGLISH 
306 dentate— with sharp teeth directed outward (see denticulate) [f279, g403, s322]. 
307 denticulate — finely toothed; (see dentate; subjectively distinct) [f280, g402, s323]. 
309 denuded — stripped of leaves, made bare, or left naked ;e.g., bare costa left by erosion of 
lamina or stem by erosion or loss of leaves (cf. defoliate) [281, g285, s330]. 
310 deoperculate — referring to capsule after the operculum has fallen [f284, g286, s331]. 
311 depauperate -- poorly developed [f72, 1054, s324]. 
312 depressed — flattened, as viewed from above (cf. compressed, complanate) [f282, g703, 
s325]. 
313 derivative — part of; e.g. a cell produced by the division of an apical cell along a single 
cutting face (see merophyte) [f894, g4, s326]. 
314 descending -- directed gradually downward [f283, g11, s327]. 
315 deuter cells — see guide cells [f285, 201, s332, 477]. 
rse — twisted to the right, or clockwise when seen from apex; e.g. twist of seta 
(opposed to sinistrorse) [f286, g203, 823, s333]. 
317 diaphanous — transparent [f287, g244, s334]. 
318 diaphragm -— see epiphragm [(288, g204, s335]. 
319 diaspore -- an agent of dispersal; any structure that becomes detached from the parent 
plant and gives rise to a new individual (see brood-body, spore gemmae, propagule; Syn. 
disseminule) [f289, g205, s336]. 
320 dichopodial — forking; regular, unequal branching; e.g., Conocephalum [f1070, g206, s337]. 
321 dichotomous — division of a structure to yield two, more or less equal, parts; e.g., forking 
of the axis into two branches (cf. bifurcate, pseudodichotomous) [f290, g207, s338]. 
322 dicranoid — having a haplolepidous peristome of 16 forked teeth each having ventral 
trabeculae more strongly thickened than the dorsal, as in Dicranum, Fissidens, 
Leucobryum (see: -oid) [291, g212, s339]. 
323 didymous — divided in two (cf. dichotomous) [£292, g1143, s340]. 
324 differentiation — the morphological and physiological changes that occur between 
initiation and maturation of a cell, tissue or organ [f293, g213, s342]. 
325 dimidate — split; e.g., calyptra split on one side (see cucullate) [f294, g438, s343]. 
326 dimorphic — occurring in two forms; e.g., with leaves of two forms [f295, g214, 1138, s345]. 
327 dioicous — with archegonia and antheridia on separate plants ("dioecious" see note after 
autoicous) [f296, g215, s346]. 
ploid — a cell, individual or generation with two sets of chromosomes (2n); the typical 
chromosome level of the sporophyte generation [f297, g216, s347]. 
329 diplolepidous (diplolepideous) — form of arthrodontous peristome; (originally) — having 
main teeth with two columns of cells up dorsal face; (strictly) - having two concentric 
cines of teeth, with the outer circle (exostome) derived from thickening of the 
contiguous walls of the outer and primary peristomial layers and the inner circle 
(endostome) derived from thickening of the contiguous walls of the primary and inner 
eine spbesbist exostome is generally more heavily thickened than the endostome; 
a EM : desee gd be vestigial; also used to denote a member of the 
ot no PRONNHO Raplolep dous) [f298, g217, s348]. 
- penis potecnion ot diploid spores; spores resulting from an irregular meiotic 
; ) (299, g218, sedis f le source of polyploidy in mosses (cf. apogamy; 
