Conopholis americana. 19 
germination. The resemblance in this respect is not to 
members of the Orobanchee, but exactly to the Balanophoree 
and Raffiestacee. 
5. The irritant action of the parasite causes swelling up of 
the host root, and enormous multiplication of its sclerenchyma 
patches. 
6. Each parasitic “tubercle”’ consists of a bark, scleren- 
chyma masses and possibly some cellular tissue belonging to 
the host, and of cellular tissue and bundle issue, chiefly 
developed in the flower stalks of the parasite. 
7. The flowering shoots show two concentric rows of bundles. 
8. The phloem masses of the bundles face each other. 
g. Stomata are present over the flowering shoots, but absent 
from the leaves. 
10. The leaves are brownish-leathery when mature, and are 
devoid of palisade tissue. 
11. In cells of the leaves and young flowering shoots are 
numerous clear refractive bodies which may be of a glucoside 
character. 
12. The flowers show a small ovarian nectar gland. 
EXPLANATION OF PLATES I-VI. 
Plate I. Three growths of Conofholis, on oak root, one-half natural size. 
Plate II. Longitudinal section of Conopholis and oak root. 
Plate III. Longitudinal section of Comopholis and oak root, opposite half 
to that figured in Plate II. 
Plate IV, Figs. 1-4. Longitudinal sections of young flower shoots on oak 
tissue. 
Plate V, Figs. § and 3. Transverse section of flower shoot of Conopkelis, 
Fig. 1 X 30°, Fig. 3 X 50°. Fig. 2. Portion of stem showing double circle of 
vascular bundles, 75°. - Fig. 4. Single bundle, 350°. Fig. 5. Longitudinal 
section of flower bud from young plant of Conopholis. 
Plate VI, Figs. 1-4. Young plants of Comepkolis attached to oak roots, 
natural size. Fig. 5. Patch of sclerenchyma cells from parasitic swelling. Fig. 
6. Cells from epidermis of leaf of Conopholis. 
