104 Britton: CusAN PLANTs NEw To SCIENCE 
rolla 10 mm. long, blue, nearly salverform, the lobes spreading, 
nearly orbicular, much shorter than the narrow tube, the two pos- 
terior united over % length; glabrous throughout. Filaments 
four, glabrous, the posterior pair slightly shorter; anthers gla- 
brous. Style glabrous. Stigmas distinct. Capsule 3 mm. long, 
ellipsoid in outline, obtuse, glabrous, ridged, septicidal and loculi- 
cidal; the coalesced placentae and septum thin, persistent, plate- 
like, extending the entire length of the capsule. Seeds 3-4 mm. 
long, irregularly oblong, reticulate, yellowish-brown. [Named 
because of its resemblance to Silvia Benth., a Mexican genus. ] 
This monotypic genus is distinguished from all other 
segregates of Herpestis by the form of the corolla, and by the 
thick-walled, ridged capsule. 
Silvinula humifusa (Griseb.) Pennell, comb. nov. 
Herpestis humifusa Griseb. Cat. Pl. Cub. 183. 1866. 
Muddy borders of brooks and lagoons, Santa Clara, Pinar del 
Rio, Isle of Pines. Endemic. 
Caconapea stemodioides Pennell, sp. nov. 
Stem 3-4 dm. tall, obtusely four-angled, glabrous. Leaves 
4-5 cm. long, 0.5-0.8 cm. wide, narrowly lanceolate, serrate, long- 
attenuate to the narrow but clasping base, glabrous, with many 
glandular dots. Pedicels one to three to an axil, 1-1.5 mm. long, 
punctate with sessile glands. Bractlets two, filiform-subulate, 
1.5-2 mm. long, placed immediately below calyx. Sepals: outer- 
most 7 mm. long, broadly ovate, rounded at base, two median 
nearly as long, narrower, somewhat one-sided, these three obtuse 
to acutish, rugosely reticulate-veined, green, glabrous, the two 
innermost lanceolate-linear, attenuate at apex, with evident mid- » 
rib, broadly hyaline, obscurely ciliolate. Corolla 5-6 mm. long, 
posterior lobes united about 2/5 length, pubescent within tube, 
especially on the anterior side, glabrous over bases of posterior 
lobes; “white.” Filaments glabrous, the postero-lateral pair 
somewhat shorter, its anthers equaling those of the antero-lateral 
pair; posterior filament completely lost. Style glabrous, stigmas 
distinct. Capsule 3.5-4 mm. long, ovoid-oblong, punctate with 
sessile glands, dehiscing loculicidally and septicidally, the lateral 
portions of the septum adherent to the capsule-walls. Placentae 
rounded, protruding into the cells, coalescent with the persistent 
median part of the septum. Seeds 0.3 mm. long, oblong-cylindric, 
truncate at each end, nearly black, longitudinally ridged and with 
obscure cross-reticulations. 
