PLATE 1 
A. —Flowering branch. Natural size. 
B. —Portion of a stem showing the cracked outer bark, and the stout nodal 
spines projecting backward. Natural size. 
C. —Petal viewed from the inside of the pendent flower. Note the tubular 
form of the petal, brought about by the inrolling of the margins. A portion of 
a filament is shown beside the petal. X4. 
D. —Style. X2. 
E. —Anther, from the back. X4. 
F. —Flower, with pedicel, bracts, and portion of the peduncle. Note the hairy 
filaments, the tubular petals, the reflexed sepals, and the gland-tipped hairs of 
the ovary, which develop into the prickles of the fruit. X2. 
G. —Immature berry, picked April 7. Natural size. 
H. —Lengthwise section of an immature berry. Natural size. 
