456 BRITTON: STUDIES OF West INDIAN PLANTS 
villous, as long as the petioles or longer; involucre narrowly cam- 
panulate, about 3 mm. long, several-flowered ; flowers white. 
Sandy bank, alluvial valley of Rio Yamaniguey, Oriente 
(Shafer 4201). 
49. UNDESCRIBED SPECIES FROM PORTO RICO 
Malpighia Shaferi Britton & Wilson, sp. nov. 
A shrub 2-2.5 m. tall, with grayish-brown twigs. Leaves 
oblong-elliptic to elliptic or somewhat oblong-lanceolate, 13-17 
cm. long, 4.5-8.5 cm. broad, acute, or rounded and mucronate, or 
occasionally retuse at the apex, more or less inequilateral and acute 
or rounded at the base, reticulate-veined above, armed beneath 
with closely-appressed stinging hairs, the margin somewhat re- 
volute; petioles stout, 8-12 mm. long; cymes nearly sessile; pedi- 
cels 8-18 mm. long; sepals elliptic to broadly ovate, 2-3 mm. 
long, 1.2-1.5 mm. broad; glands fully one half the length of the 
sepals; larger petals 10-11 mm. long, the blades 6 mm. broad, pink, 
prominently keeled on the back; stamens unequal; anthers 
cordate; styles unequal, the anterior one slightly shorter than the 
posterior ones; fruit red. 
Type collected in the vicinity of Isabel Segunda, Vieques 
Island (Shafer 2448). 
Byrsonima ophiticola Small, sp. nov. 
: Tree up to 8 m. tall, the twigs with dark gray bark, the young 
tips with darkred pubescence. Leavesclustered at the ends of the 
twigs, 3-6.5 cm. long, the blades spatulate to narrowly obovate, 
rounded or obtuse at the apex, closely and finely pubescent when 
young, sparingly pubescent when full-grown, dull, paler green 
beneat than above, acute or acuminate at the base, rather long- 
petioled; panicles 5-9 cm. Jong, the bracts less than 3 mm. long; 
pedicels closely pubescent, at least in anthesis; sepals ovate or 
oblong-ovate, 2.5-3 mm. long, obtuse or acutish, the glands mostly 
less than one half as long as the sepal-body; petals yellow, turning 
to scarlet, 8-10 mm. long, the blade broadly reniform or orbicular- 
reniform, 7-8 mm. wide, the claw shorter than the blades; 
drupes not seen. 
Serpentine slopes, Guanajibo near Mayaguez (Britton, Cowell, 
& Brown 4350). Related to Byrsonima lucida DC., from which it 
differs in the longer petioles, larger panicles, and larger flowers. 
The Petals besides unfolding yellow and turning scarlet, have 
relatively shorter claws and more broadly reniform blades than 
in B. lucida, and are of very firm texture and more persistent. 
