62 BOTANICAL GAZETTE [JULY 
the cotyledons drop off, with their leaves still enclosed. The accom: 
panying drawing (fg. 7) illustrates a seedling with the cotyledons, 
Cot, attached, and the first leaves, Z*, almost expanded. The primary 
root, &, is persistent and branches very soon, while a few secondary 
ones proceed from the base of the hypocotyl. The very long and thick 
hypocotyl, H, is green and glabrous; there is an early development of 
cork-layers ; the bark-parenchyma is broad and traversed by a number 
of laticiferous ducts: The mestome bundles are of normal structure 
and between these are numerous strata of interfascicular cambium. A 
pith occupies the center of the hypocotyl; its cells are like those of 
the bark, thin-walled and filled with starch, but there are no 
laticiferous ducts. As stated above, the cotyledons have long 
petioles and their blades (fg. 2) are mostly oblong witha 
short point, but without any lobation as was observed in 
bicuiba. They are somewhat fleshy and pale in color; never 
ie oc. theless, stomata are present on the upper surface and not on 
Blade of a the lower. Along the ribs on the upper face, two kinds of 
cotyledon ; hairs are visible. These are either long, multicellular, and 
natural size. nointed, or unicellular and almost globular in shape. 
latter (fig. 7) are quite abundant in contrast to the first, and in some 
places they covered the surface just above the ribs. They represent 
glandular hairs, but their function GR 
could not be ascertained. The 
lower surface of the blades, which 
lie close up to the endosperm, is 
wholly glabrous. A typical pali- 
sade tissue was observed, covering 
a rather dense pneumatic tissue, 
and both contained abundant 
deposits of starch; _laticiferous Fic. 3.—Epidermis with glandular ies 
ducts were also very frequent. from the cotyledons of Jatropha multifile 
This seedling has no mate * 24° : 
among the other species of Jatropha, which have been studied hereto: 
fore. Sir John Lubbock figures and describes 7. Curcas L. and J: 
podagrica Hook., both of which possess stout and long hypocotyls 
furthermore, their cotyledons are free and provided with distin 
petioles, although not equaling in length those of /. multifida. 
Another and very peculiar manner of germinating was observed . 
Persea gratissima Gartn., of which several seedlings were cultivated * 
oO 
