474 MR. SPENCER LE M. MOORE—PHANEROGAMIC BOTANY 
(mediocria 120Xx5:'0 cm.): costs secundariz circa 20, interjectis aliis mino- 
ribus, angulis latis insertze, rectze vel fere rectee, rarissime mox dichotom:e, sub 
margine arcuatim conjunctee, utrinque (prsecipue subtus) eminentes; venulæ 
eminentes, arcte reticulate ; petioli ¢ 1*0 em. long., subteretes, minute pubescentes. 
Receptaculorum pedunculi 0:2 cm. long., minute pubescentes, sub fructu sspe ad 
0:5-0:6 em. elongati. Capitula masculina 0:5-0:7 cm. diam., glabra, subcarnosa, 
basi bracteis circa 6 minutis, rotundatis, membranaceo-scariosis, 0:07 cm. long. 
instructa, viva viridia. Bracteole minute, vix 0:1 cm. long., subito peltatim 
dilatatze, pars peltata 0:5 em. diam. vel latior, minute pubescens, margine ciliolata. 
Perianthii segmenta late obovata, obtusissima, interdum emarginata, 0:13 cm. long., 
usque 0:03-0:04 em. alt. coalita, extus minute pubescentia, margine ciliolata, intus 
minute pilosula. Filamenta deinde perianthium paullulum superantia ; antheræ 
0:07 em. long. Receptaculum femineum basi bracteas masculinis similibus osten- 
dens, tempore fructificandi circa 0:5 em. diam., et nune bracteolis exiguis, peltatis, 
minute pubescentibus, margine ciliolatis, magnitudine diversa, sed vix unquam 0:05 
em. diam. attingentes dense obtectum. Os pseudoperigoniale pubescens, sursum 
parum ampliatum. Ovarium subglobosum, apice paullo angustatum, 0:1 em. long. ; 
stylus vix 0:2 em. long., vix ad 0-1 em. receptaculo inclusus, a receptaculo omnino 
liber, minute pubescens; stigmata stylum subzequantia. Fructus 1:0-1:5 em. diam., 
minute puberulus, bracteolis haud amplificatis preesertim juxta basin instructus. 
Semina 0:6-0'7 em. long., 0:7-0:8 em. lat. pallide brunnea vel brunneo-purpurea, 
plus minus transversim rugata ; hilum 0:15 em. diam., stramineum. 
Hab. Ad Santa Cruz viget, et mens. Oct. floret, mens. insequente fructus ostendens. 
(Nn. 366 [ g ] et 677 [ 9 ].) 
A general view of the stem in transverse section as seen under a low power is given in 
Plate XX XIX. fig. 6. The drawing represents a somewhat rare state of things, inasmuch 
as trachez and tracheides are very scarce, their place being taken by a large number of 
prosenchyme cells; but although along other radii there are usually more vascular 
elements, even there the proportion of prosenchyme is still high. The protoxylem 
often projects some distance into the pith. The phloém is sufficiently voluminous, 
the hard bast being but slightly developed. There is a hard pericycle. Here and 
there the cortex is strengthened by sclerenchyme cells; its fourth cell-layer functions 
as a phellogen-layer. Material for studying the arrangement of the leaf-traces is 
not to hand. 
The plentiful milky latex is contained in tubes, which, in the stem, are seldom, if at all, 
branched. These latex-tubes are frequent in the pith and the outer bast, and more 
rarely they are met with in the cortex. In the pith they may often be traced running 
for considerable distances and without septa, thus conforming with the rule relating to 
the latex-tubes of Artocarpee. In other cases, however, transverse partitions are clearly 
shown, and the tube may vary in appearance in different parts of its course. Accom- 
panying the latex-tubes are usually short, thin-walled elements, overlying one another in 
longitudinal series, and filled with a substance turning red on boiling sections with caustic 
soda. These rows of cells may undergo much alteration in breadth within a short 
