GRIFFITHS: ADDITIONAL SPECIES OF OPUNTIA 529 
Opuntia ithypetala sp. nov. 
A tall, erect, tree-like, open-branching plant 2 m. high or more 
with a distinct trunk and widely spreading, ascending to drooping 
branches; joints large, obovate, contracted below into a long stipi- 
tate base, very often 19 X 45 cm., but commonly only 14 X 26 
cm., bright dark green, tubercular-raised at the areoles, the surface 
not becoming flat and smooth for two or three years at least, 
bright dark green, mostly without bloom; leaves subulate, cuspi- 
date-pointed, slightly flattened, 5-6 mm. long; areoles oval to 
subcircular and often 1 cm. in diameter, 4-5 cm. apart on sides of 
joints; spicules not visible; spines white on second year’s growth, 
three to five, mostly three or four, the central one porrect and 
largest 3-4 cm. long, the lower one short, 1-2 cm. and recurved 
the others divergent, flattened, twisted, formidable, increasing 
on old trunks to six to ten and often becoming 8 cm. long an 
very stout; flowers light canary yellow, fading to light rose purplish 
late in the day, the petals erect, not spreading, becoming 3 cm. 
in diameter when fully opened; filaments white to slightly greenish 
below and very light pinkish tinted above, style white, stigma 
very light green, six-parted; buds conical-pointed, light olive with 
only a tinge of red at the tip, the scales wide and closely appressed ; 
fruit light purplish red, slightly raised tubercular at areoles and 
deeply pitted, each upper areole bearing mostly 1 white, porrect 
spine 1 cm. long and occasionally an additional smaller one 3 to 
5 mm. long below the big one, the pulp being much deeper purplish 
red than the outside and brittle with a pleasant touch but not 
very sweet. 
This species was received from the Royal Botanical Garden 
at Berlin as Opuntia Hanburyana A. Weber. It is more closely 
related to Opuntia Schumanni A. Weber but as the description 
above indicates it is very different from either one. It agrees 
with the latter in having the petals erect when the flower is fully 
opened; it does not agree with the former in any particular. It has 
been grown to maturity very successfully in our two situations in 
Texas as well as at Chico, California. When first received it was 
assigned the inventory number of our San Antonio garden, 506, 
and under this number it has been carried at Chico, California. 
Opuntia rubiflora sp. nov. 
Plant low, spreading, 30-45 cm. high and having a spread of 
a meter or more; joints obovate, mostly 12 X 18 cm. in last year's 
growth, but older ones larger, medium dark green with a little 
