SCHOMBURGK’S GUIANA PLANTS. 47 
ruptos foliosos axillares terminalesque irregulariter dispo- 
sitis.—Caulis bipedalis, teres v. obscure angulatus, pube 
viscosa et pilis longiusculis patentibus villosus, ramosus nune 
ramosissimus. Folia opposita v. 3—4-natim verticillata, 
1—3 pollicaria, internodiis szepe longiora, rugosa et plus 
minusve viscosa, suprema et ramulorum floralium brevia, 
sepe ovata. Pedicelli 1—3 lin. longi, axillares et solitarii, 
sed ramulis floralibus interdum brevissimis ex eadem axilla 
prodeuntibus nonnunquam fasciculum seu pseudo-verticillum 
formant. Sepala anguste lanceolata, subulato-acuminata. 
Corolla ceerulea, subpurpurascens, glabra, tubo calyce incluso, 
labio inferiore duplo longiore.—Savannahs, British Guiana. 
Schomburgk.— "Tropical Brazil, Pohl.— Bahia, Saltzmann, 
Lhotsky. Gardner, n. 898. — Pernambuco, Gardner, n. 1093. — 
Gardner's n. 1088, from Pernambuco, and Blanchet'sn. 2562, 
from the Serra Jacobina, are the Stemodia maritima, Linn. 
—Gardner’s n. 89, and Tweedie's n. 1172 and 1173, are 
S. trifoliata, Reich., a common Rio Janeiro plant. —Gard- 
ner's n. 1092, from Pernambuco, and 1378 from Alagoas, 
are S. verticillata, Link.; the same collector’s n. 1803, chum 
Ceara, appears to be a new Stemodia. eit 
68. Bacopa aquatica. Aubl.—Herpestes stéllaHieidén B. 
—Benth. in Hook. Comp. Bot. Mag. ll. p. 51. —Swampy 
situations on the Essequibo and Rupunoony. Schomburgk, 
n. 532: T. ; 
BACOPA, . di 
Gen. Cuar. Calyx 5-partitus sepalis imbricativis, postico 
maximo foliaceo, 2 anticis pariter foliaceis et minoribus, 9 - 
lateralibus interioribus lineari-carinatis. Corolla subrotata 
v. campanulata, equaliter 5-fida, sestivatione imbricativa. 
Stamina 5 sequalia, laciniis corollinis alternantia. Anthere 
lineari-sagittatee, biloculares, loculis subparallelis rima longi- 
. tudinali dehiscentibus. Ovarium biloculare. Stylus simplex. |. 
. Stigma bilamellatum. Capsula membranacea, vix dehiscens, - 
_ bilocularis, dissepimento membranaceo fere per totam super- 
ficiem placentifero. Semina numerosissima, horizontalia, o 
longo-ovoidea, acuminata, testa reticulata; albumine : 
