OPUNTIACBAE | 903 
usually narrowly so, or slightly ups eid the middle or ou it, thick 
turgid and ong, li reen o 
Ong, ascending and Ru recurved, green, unaccompanie i Pied 
es: 
spines slender-subulate, Pon or r 4 together, pi ink, reddi a e red, 
at maturity Bray, often dark-gray, RUN the sometimes d Ier tip, when dry, 
E en "e nearly terete: 1 rs usually solitary on a joint 
an | 
mm. Ee acute or ‘acuminate, intermediat ML E. to rhombie- 
ovate, acuminate, the inner orbie ovate above the broad elaw-like base 
m. long, abruptly deni co NADA lemon- wallow . wide: a 
few, broadly obovate, truncate and emarginate at the apex and mucronate: 
anthers fully 2 mm. long: berry narrowly obovoid to bd uim te, 2.5—3.5 
em. long, reddish purple, the umbilieus coneave: seeds few, turgid, about 
5 mm. in diameter. [O. frustulenta Gibbes. O. Pes. Corvi LeCont te |—Sand- 
dunes and pinelands, outer part of Coastal Plain, Fla. to Miss. and N. C.— 
This and the next preceding species are so thor roughly disguised in eonneetion 
with their habitats that the loosely artieulated joints are frequently to be 
found adhering to one's clothing before they are noticed on the ground. 
O. impedita Small. Plants closely prostrate, ultimately eop oey branched, 
the joints often m alti uo. eep and forming viciously armed mats 
elliptic or nea ny SO ur 7-15 em. long, rather thick, light- Ee n: leaves 
stout-subulate, 4-6 mm. long, Ue or RUD e ightly cu rved upward, 
dark- green, unaccompanied 2 PR d p or spines: spines sto outish, 
usually numerous, solitary o together, pale-gray, Rip ept t the nom at the 
eR. when ay, Pris colored a faintly banded when wet: flowers often 
ral on hypanthium ug nearly terete and even: 
sepals green, PANE pos ps to ovate, 4—8 mm. long, acum the inner 
inate 
ueh larger, with the shoulders of the ud D ad body nar rrowed into the 
oues tip: Me bright-yellow, 4.5—5.5 em. wide; petals several, about 12, 
about 2.5-3 long, broadly obovate to cuneate-obovate, broadly rounded 
m. long 
at the apex, pesto mueronate; anthers nearly 2 rr Nui 
is 3 : , rounded at the c the umbilieus bu small, a 
ave: seeds rather few, 4—4.5 mm. in diameter [By e or first published 
a "0. eda: |—Sand- a E Plain, N E Fla BN C. 
5. O. pisciformis Small. Plant prostrate, copiously branched 2 rming dense 
: o sib | 
s ary or 2 or 3 together, S cream-colored becoming salmon colored and gray 
vith a dark tip when dry, salmon when wet, the longer o 5—6 . long: 
a numerous: hypanthium turbinate, angular and no 02 sepals 
green, the outer un to triangular-lanceolate, 9-12 mm. long, acuminate, 
vide: 
3-4 em. long, broadly cuneate, mostly trun cate a emarginate at the apex, 
E anthers nearly 2 mm. long: berry broadly turbinate-obovoid, 3.5—4 
long, pu "ple, o) i the Mora the uus deeply concave: seed 
e numerous, 5-5.5 mm. in dian —Sand-du unes, estuary of ‘the Saint 
Johns River, Fla. — This p the x punctus species are vigorous growers 
and loose- -jointed, This combination causes plants to form disorderly masses 
of joints often a foot high. 
O. eburnispina Small. Plant prostrate, widely } branched and foni ing m 
on the dune sands, with tuberous roots: joints oval or suborbicular, 2l 
