530 GRIFFITHS: ADDITIONAL SPECIES OF OPUNTIA 
pruinosity, broadly rounded above and gradually narrowed 
below into a short stipe; areoles obovate above and subcircular 
below, about 3-4 mm. long with prominent gray wool the second 
year; spicules brown on this year’s growth, changing to yellow in 
situ the second year, situated in a compact tuft in upper portion 
of areole, 2 mm. long; spines white with brown to straw-colored 
bases, on last year’s joints two or three, usually one recurved 
1-2 cm. long, white, the others stouter, 3-4 cm. long, white with 
brown to straw-colored bases, porrect, divergent, flattened, 
slightly twisted and at times showing a very faint annulation, 
increasing and becoming six to eight in number and somewhat 
lengthened in age; bud medium-pointed with loose, narrow scales 
of an olive green color but with a tinge of dull pinkish red in the 
upper portion; flowers pink, filaments yellow, greenish below, 
style white, stigma very light greenish, six-parted, with long- 
pointed divisions which are cuspidate, the general shape of the 
stigma being conical. 
The species was received originally in the form of cuttings 
from European collections, designated by an unpublished varietal 
name under Opuntia camanchica Engelm. & Bigel. It is, however, 
a perfectly good species. Its habitat was not stated. 
Opuntia megalantha sp. nov. 
A tall, robust, erect, open-branching plant 2 m. or more in 
height; joints obovate, broadly rounded or often, when young, 
bluntly pointed above, becoming more rounded the second year, 
glaucous-gray-green, last year’s joints commonly 14 X 21 cm.; 
areoles at first brown turning gray, variable, oval-obovate to 
subcircular, enlarging in age, about 3~5 mm. long the first season; 
spicules yellow, scattered through the edge of the areole, wool 
4-5 mm. long, increasing slightly in age but only in scattered 
places on the plant, usually there is no increase at all but the 
wool increases or grows anew and the areoles on the old trunks 
three or more years old often bright brown like new growth, often 
becoming transversely elongated and 1 cm. in width on old trunks; 
spines yellow, in some cases slightly tinted at base, some more OF 
Jess mottled after first year but semi-translucent, dirty yellow in 
age, one to three, the longest 2.5 cm., increasing to 4-5 cm. in 
length and four or five in number on old wood; flowers yellow, 
10-II cm. in diameter, petals 5 cm. long, obovate, usually notched 
at the rounded apex, filaments greenish below and white or 
yellowish above, style white, stigma large, in rare instances I cm. 
in diameter, white or slightly greenish tinged, flattened by in- 
curving of points, eight- to nine-parted; fruit dark red throughout 
. 
